a metric ton of changes
[ardour.git] / gtk2_ardour / editor.cc
index e8aaee5b99e116d476a374d3aa81690af31f0429..a44eba37544994c64241a983f5ecd0092d82decf 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2000 Paul Davis 
+    Copyright (C) 2000-2006 Paul Davis 
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -48,7 +48,6 @@
 #include <ardour/utils.h>
 
 #include "ardour_ui.h"
-#include "check_mark.h"
 #include "editor.h"
 #include "grouped_buttons.h"
 #include "keyboard.h"
@@ -66,6 +65,7 @@
 #include "crossfade_edit.h"
 #include "audio_time_axis.h"
 #include "canvas_impl.h"
+#include "actions.h"
 #include "gui_thread.h"
 
 #include "i18n.h"
@@ -144,14 +144,69 @@ Gdk::Cursor* Editor::zoom_cursor = 0;
 Gdk::Cursor* Editor::time_fx_cursor = 0;
 Gdk::Cursor* Editor::fader_cursor = 0;
 Gdk::Cursor* Editor::speaker_cursor = 0;
-Gdk::Cursor* Editor::null_cursor = 0;
 Gdk::Cursor* Editor::wait_cursor = 0;
 Gdk::Cursor* Editor::timebar_cursor = 0;
 
-GdkPixmap *Editor::check_pixmap = 0;
-GdkBitmap *Editor::check_mask = 0;
-GdkPixmap *Editor::empty_pixmap = 0;
-GdkBitmap *Editor::empty_mask = 0;
+bool
+Editor::on_key_press_event (GdkEventKey* ev)
+{
+       GtkWindow* win = gobj();
+
+       /* This exists to allow us to override the way GTK handles
+          key events. The normal sequence is:
+
+          a) event is delivered to a GtkWindow
+          b) accelerators/mnemonics are activated
+          c) if (b) didn't handle the event, propagate to
+              the focus widget and/or focus chain
+
+          The problem with this is that if the accelerators include
+          keys without modifiers, such as the space bar or the 
+          letter "e", then pressing the key while typing into
+          a text entry widget results in the accelerator being
+          activated, instead of the desired letter appearing
+          in the text entry.
+
+          There is no good way of fixing this, but this
+          represents a compromise. The idea is that 
+          key events involving modifiers (not Shift)
+          get routed into the activation pathway first, then
+          get propagated to the focus widget if necessary.
+          
+          If the key event doesn't involve modifiers,
+          we deliver to the focus widget first, thus allowing
+          it to get "normal text" without interference
+          from acceleration.
+
+          Of course, this can also be problematic: if there
+          is a widget with focus, then it will swallow
+          all "normal text" accelerators.
+       */
+
+       if (ev->state & ~Gdk::SHIFT_MASK) {
+               /* modifiers in effect, accelerate first */
+               if (!gtk_window_activate_key (win, ev)) {
+                       return gtk_window_propagate_key_event (win, ev);
+               } else {
+                       return true;
+               } 
+       }
+       
+       /* no modifiers, propagate first */
+
+       if (!gtk_window_propagate_key_event (win, ev)) {
+               return gtk_window_activate_key (win, ev);
+       } 
+
+
+       return true;
+}
+
+void
+show_me_the_size (Requisition* r, const char* what)
+{
+       cerr << "size of " << what << " = " << r->width << " x " << r->height << endl;
+}
 
 Editor::Editor (AudioEngine& eng) 
        : engine (eng),
@@ -169,8 +224,13 @@ Editor::Editor (AudioEngine& eng)
          transport_mark_label (_("Loop/Punch Ranges")),
 
          edit_packer (3, 3, false),
-         edit_hscroll_left_arrow (Gtk::ARROW_LEFT, Gtk::SHADOW_OUT),
-         edit_hscroll_right_arrow (Gtk::ARROW_RIGHT, Gtk::SHADOW_OUT),
+
+         /* the values here don't matter: layout widgets
+            reset them as needed.
+         */
+
+         vertical_adjustment (0.0, 0.0, 400.0, 10),
+         horizontal_adjustment (0.0, 0.0, 1200.0, 20),
 
          /* tool bar related */
 
@@ -218,13 +278,6 @@ Editor::Editor (AudioEngine& eng)
 
        init_colormap ();
 
-       check_pixmap = gdk_pixmap_colormap_create_from_xpm_d (NULL, 
-                                                             gtk_widget_get_colormap (GTK_WIDGET(edit_group_list.gobj())),
-                                                             &check_mask, NULL, (gchar **) check_xpm);
-       empty_pixmap = gdk_pixmap_colormap_create_from_xpm_d (NULL, 
-                                                             gtk_widget_get_colormap (GTK_WIDGET(edit_group_list.gobj())),
-                                                             &empty_mask, NULL, (gchar **) empty_xpm);
-
        session = 0;
 
        selection = new Selection;
@@ -266,6 +319,7 @@ Editor::Editor (AudioEngine& eng)
        show_gain_after_trim = false;
        no_zoom_repos_update = false;
        ignore_route_list_reorder = false;
+       no_route_list_redisplay = false;
        verbose_cursor_on = true;
        route_removal = false;
        track_spacing = 0;
@@ -275,6 +329,7 @@ Editor::Editor (AudioEngine& eng)
        _xfade_visibility = true;
        editor_ruler_menu = 0;
        no_ruler_shown_update = false;
+       edit_hscroll_dragging = false;
        edit_group_list_menu = 0;
        route_list_menu = 0;
        region_list_menu = 0;
@@ -285,12 +340,9 @@ Editor::Editor (AudioEngine& eng)
        new_transport_marker_menu = 0;
        editor_mixer_strip_width = Wide;
        repos_zoom_queued = false;
-       import_audio_item = 0;
-       embed_audio_item = 0;
        region_edit_menu_split_item = 0;
        temp_location = 0;
        region_edit_menu_split_multichannel_item = 0;
-       edit_hscroll_dragging = false;
        leftmost_frame = 0;
        ignore_mouse_mode_toggle = false;
        current_stepping_trackview = 0;
@@ -312,7 +364,6 @@ Editor::Editor (AudioEngine& eng)
        range_marker_drag_rect = 0;
        marker_drag_line = 0;
        
-       mouse_mode = MouseZoom; /* force change in next call */
        set_mouse_mode (MouseObject, true);
 
        frames_per_unit = 2048; /* too early to use set_frames_per_unit */
@@ -322,45 +373,31 @@ Editor::Editor (AudioEngine& eng)
        initialize_rulers ();
        initialize_canvas ();
 
-       track_canvas_scroller.add (track_canvas);
-       track_canvas_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_NEVER);
-       track_canvas_scroller.set_name ("TrackCanvasScroller");
-
-       track_canvas_scroller.get_vadjustment()->signal_value_changed().connect (mem_fun(*this, &Editor::tie_vertical_scrolling));
-       track_canvas_scroller.get_vadjustment()->set_step_increment (10.0);
-
-       track_canvas_scroller.get_hadjustment()->set_lower (0.0);
-       track_canvas_scroller.get_hadjustment()->set_upper (1200.0);
-       track_canvas_scroller.get_hadjustment()->set_step_increment (20.0);
-       track_canvas_scroller.get_hadjustment()->signal_value_changed().connect (mem_fun(*this, &Editor::canvas_horizontally_scrolled));
-
-       edit_vscrollbar.set_adjustment(*track_canvas_scroller.get_vadjustment());
-       edit_hscrollbar.set_adjustment(*track_canvas_scroller.get_hadjustment());
-
-       edit_hscrollbar.signal_button_press_event().connect (mem_fun(*this, &Editor::hscroll_slider_button_press));
-       edit_hscrollbar.signal_button_release_event().connect (mem_fun(*this, &Editor::hscroll_slider_button_release));
-       edit_hscrollbar.signal_size_allocate().connect (mem_fun(*this, &Editor::hscroll_slider_allocate));
+       edit_controls_vbox.set_spacing (0);
+       horizontal_adjustment.signal_value_changed().connect (mem_fun(*this, &Editor::canvas_horizontally_scrolled));
+       vertical_adjustment.signal_value_changed().connect (mem_fun(*this, &Editor::tie_vertical_scrolling));
        
-       time_canvas_scroller.add (time_canvas);
-       time_canvas_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_NEVER);
-       time_canvas_scroller.set_hadjustment (*track_canvas_scroller.get_hadjustment());
-       time_canvas_scroller.set_name ("TimeCanvasScroller");
+       track_canvas.set_hadjustment (horizontal_adjustment);
+       track_canvas.set_vadjustment (vertical_adjustment);
+       time_canvas.set_hadjustment (horizontal_adjustment);
 
-       track_canvas_scroller.signal_map_event().connect (mem_fun (*this, &Editor::track_canvas_map_handler));
-       time_canvas_scroller.signal_map_event().connect (mem_fun (*this, &Editor::time_canvas_map_handler));
+       track_canvas.signal_map_event().connect (mem_fun (*this, &Editor::track_canvas_map_handler));
+       time_canvas.signal_map_event().connect (mem_fun (*this, &Editor::time_canvas_map_handler));
+       
+       controls_layout.add (edit_controls_vbox);
+       controls_layout.set_name ("EditControlsBase");
+       controls_layout.add_events (Gdk::SCROLL_MASK);
+       controls_layout.signal_scroll_event().connect (mem_fun(*this, &Editor::control_layout_scroll), false);
        
-       edit_controls_vbox.set_spacing (track_spacing);
-       edit_controls_hbox.pack_start (edit_controls_vbox, true, true);
-       edit_controls_scroller.add (edit_controls_hbox);
-       edit_controls_scroller.set_name ("EditControlsBase");
-       edit_controls_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_NEVER);
+       controls_layout.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK);
+       controls_layout.signal_button_release_event().connect (mem_fun(*this, &Editor::edit_controls_button_release));
 
-       Viewport* viewport = static_cast<Viewport*> (edit_controls_scroller.get_child());
+       edit_vscrollbar.set_adjustment (vertical_adjustment);
+       edit_hscrollbar.set_adjustment (horizontal_adjustment);
 
-       viewport->set_shadow_type (Gtk::SHADOW_NONE);
-       viewport->set_name ("EditControlsBase");
-       viewport->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK);
-       viewport->signal_button_release_event().connect (mem_fun(*this, &Editor::edit_controls_button_release));
+       edit_hscrollbar.signal_button_press_event().connect (mem_fun(*this, &Editor::hscrollbar_button_press));
+       edit_hscrollbar.signal_button_release_event().connect (mem_fun(*this, &Editor::hscrollbar_button_release));
+       edit_hscrollbar.signal_size_allocate().connect (mem_fun(*this, &Editor::hscrollbar_allocate));
 
        build_cursors ();
        setup_toolbar ();
@@ -371,7 +408,7 @@ Editor::Editor (AudioEngine& eng)
        time_canvas_vbox.pack_start (*smpte_ruler, false, false);
        time_canvas_vbox.pack_start (*frames_ruler, false, false);
        time_canvas_vbox.pack_start (*bbt_ruler, false, false);
-       time_canvas_vbox.pack_start (time_canvas_scroller, true, true);
+       time_canvas_vbox.pack_start (time_canvas, true, true);
        time_canvas_vbox.set_size_request (-1, (int)(timebar_height * visible_timebars));
 
        bbt_label.set_name ("EditorTimeButton");
@@ -429,28 +466,24 @@ Editor::Editor (AudioEngine& eng)
           for the canvas areas.
        */
 
-       track_canvas_event_box.add (track_canvas_scroller);
+       track_canvas_event_box.add (track_canvas);
 
        time_canvas_event_box.add (time_canvas_vbox);
        time_canvas_event_box.set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
-
        
        edit_packer.set_col_spacings (0);
        edit_packer.set_row_spacings (0);
        edit_packer.set_homogeneous (false);
        edit_packer.set_name ("EditorWindow");
 
-//     edit_packer.attach (edit_hscroll_left_arrow_event,  0, 1, 0, 1,    Gtk::FILL,  0, 0, 0);
-//     edit_packer.attach (edit_hscroll_slider,            1, 2, 0, 1,    Gtk::FILL|Gtk::EXPAND,  0, 0, 0);
-//     edit_packer.attach (edit_hscroll_right_arrow_event, 2, 3, 0, 1,    Gtk::FILL,  0, 0, 0);
-       edit_packer.attach (edit_hscrollbar,            1, 2, 0, 1,    FILL|EXPAND,  FILL, 0, 0);
+       edit_packer.attach (edit_hscrollbar,         1, 2, 0, 1,    FILL|EXPAND,  FILL, 0, 0);
 
-       edit_packer.attach (time_button_event_box,               0, 1, 1, 2,    FILL, FILL, 0, 0);
-       edit_packer.attach (time_canvas_event_box,          1, 2, 1, 2,    FILL|EXPAND, FILL, 0, 0);
+       edit_packer.attach (time_button_event_box,   0, 1, 1, 2,    FILL,        FILL, 0, 0);
+       edit_packer.attach (time_canvas_event_box,   1, 2, 1, 2,    FILL|EXPAND, FILL, 0, 0);
 
-       edit_packer.attach (edit_controls_scroller,         0, 1, 2, 3,    FILL,                   FILL|EXPAND, 0, 0);
-       edit_packer.attach (track_canvas_event_box,         1, 2, 2, 3,    FILL|EXPAND, FILL|EXPAND, 0, 0);
-       edit_packer.attach (edit_vscrollbar,                2, 3, 2, 3,    FILL,                   FILL|EXPAND, 0, 0);
+       edit_packer.attach (controls_layout,         0, 1, 2, 3,    FILL,        FILL|EXPAND, 0, 0);
+       edit_packer.attach (track_canvas_event_box,  1, 2, 2, 3,    FILL|EXPAND, FILL|EXPAND, 0, 0);
+       edit_packer.attach (edit_vscrollbar,         2, 3, 2, 3,    FILL,        FILL|EXPAND, 0, 0);
 
        edit_frame.set_name ("BaseFrame");
        edit_frame.set_shadow_type (SHADOW_IN);
@@ -461,66 +494,50 @@ Editor::Editor (AudioEngine& eng)
        ARDOUR_UI::instance()->tooltips().set_tip (zoom_in_button, _("Zoom in"));
        ARDOUR_UI::instance()->tooltips().set_tip (zoom_out_button, _("Zoom out"));
 
-//     zoom_onetoone_button.set_name ("EditorTimeButton");
        zoom_out_full_button.set_name ("EditorTimeButton");
-//     ARDOUR_UI::instance()->tooltips().set_tip (zoom_onetoone_button, _("Zoom in 1:1"));
        ARDOUR_UI::instance()->tooltips().set_tip (zoom_out_full_button, _("Zoom to session"));
 
-       zoom_in_button.add (*(manage (new Gtk::Image (Gdk::Pixbuf::create_from_xpm_data(zoom_in_button_xpm)))));
-       zoom_out_button.add (*(manage (new Gtk::Image (Gdk::Pixbuf::create_from_xpm_data(zoom_out_button_xpm)))));
-       zoom_out_full_button.add (*(manage (new Gtk::Image (Gdk::Pixbuf::create_from_xpm_data(zoom_out_full_button_xpm)))));
-//     zoom_onetoone_button.add (*(manage (new Gtk::Image (zoom_onetoone_button_xpm))));
-
+       zoom_in_button.add (*(manage (new Image (Stock::ZOOM_IN, ICON_SIZE_BUTTON))));
+       zoom_out_button.add (*(manage (new Image (Stock::ZOOM_OUT, ICON_SIZE_BUTTON))));
+       zoom_out_full_button.add (*(manage (new Image (Stock::ZOOM_FIT, ICON_SIZE_BUTTON))));
        
        zoom_in_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::temporal_zoom_step), false));
        zoom_out_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::temporal_zoom_step), true));
        zoom_out_full_button.signal_clicked().connect (mem_fun(*this, &Editor::temporal_zoom_session));
-//     zoom_onetoone_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::temporal_zoom), 1.0));
        
        zoom_indicator_box.pack_start (zoom_out_button, false, false);
        zoom_indicator_box.pack_start (zoom_in_button, false, false);
        zoom_indicator_box.pack_start (zoom_range_clock, false, false); 
-//     zoom_indicator_box.pack_start (zoom_onetoone_button, false, false);
        zoom_indicator_box.pack_start (zoom_out_full_button, false, false);
        
        zoom_indicator_label.set_text (_("Zoom Span"));
        zoom_indicator_label.set_name ("ToolBarLabel");
 
-
        zoom_indicator_vbox.set_spacing (3);
        zoom_indicator_vbox.set_border_width (3);
        zoom_indicator_vbox.pack_start (zoom_indicator_label, false, false);
        zoom_indicator_vbox.pack_start (zoom_indicator_box, false, false);
 
-
        bottom_hbox.set_border_width (3);
        bottom_hbox.set_spacing (3);
 
        route_display_model = ListStore::create(route_display_columns);
-       route_list.set_model (route_display_model);
-       route_list.append_column (_("Tracks"), route_display_columns.text);
-       route_list.set_name ("TrackListDisplay");
-       route_list.get_selection()->set_mode (Gtk::SELECTION_MULTIPLE);
-       route_list.set_reorderable (true);
-       
-       route_list.set_size_request (75,-1);
-       route_list.set_headers_visible (true);
-       route_list.set_headers_clickable (true);
+       route_list_display.set_model (route_display_model);
+       route_list_display.append_column (_("Tracks"), route_display_columns.text);
+       route_list_display.set_headers_visible (false);
+       route_list_display.set_name ("TrackListDisplay");
+       route_list_display.get_selection()->set_mode (SELECTION_MULTIPLE);
+       route_list_display.set_reorderable (true);
+       route_list_display.set_size_request (75,-1);
 
-       // GTK2FIX
-       // route_list.signal_rows_reordered().connect (mem_fun (*this, &Editor::queue_route_list_reordered));
+       route_display_model->signal_rows_reordered().connect (mem_fun (*this, &Editor::route_list_reordered));
+       route_display_model->set_sort_func (0, mem_fun (*this, &Editor::route_list_compare_func));
+       route_display_model->set_sort_column (0, SORT_ASCENDING);
 
-       // GTK2FIX
-       // route_display_model->set_sort_func (0, mem_fun (*this, &Editor::route_list_compare_func));
+       route_list_scroller.add (route_list_display);
+       route_list_scroller.set_policy (POLICY_NEVER, POLICY_AUTOMATIC);
 
-       // GTK2FIX
-       //route_list.set_shadow_type (Gtk::SHADOW_IN);
-
-       route_list_scroller.add (route_list);
-       route_list_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
-
-       route_list.get_selection()->signal_changed().connect (mem_fun (*this, &Editor::route_display_selection_changed));
-       route_list.signal_columns_changed().connect (mem_fun(*this, &Editor::route_list_column_click));
+       route_list_display.get_selection()->signal_changed().connect (mem_fun (*this, &Editor::route_display_selection_changed));
 
        edit_group_list_button_label.set_text (_("Edit Groups"));
        edit_group_list_button_label.set_name ("EditGroupTitleButton");
@@ -528,150 +545,137 @@ Editor::Editor (AudioEngine& eng)
        edit_group_list_button.set_name ("EditGroupTitleButton");
 
        group_model = ListStore::create(group_columns);
-       edit_group_list.set_model (group_model);
-       edit_group_list.append_column (_("active"), group_columns.is_active);
-       edit_group_list.append_column (_("groupname"), group_columns.text);
-       edit_group_list.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
-       edit_group_list.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
+       edit_group_display.set_model (group_model);
+       edit_group_display.append_column (_("active"), group_columns.is_active);
+       edit_group_display.append_column (_("groupname"), group_columns.text);
+       edit_group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
+       edit_group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
+       edit_group_display.set_headers_visible (false);
 
        /* use checkbox for the active column */
 
-       CellRendererToggle *active_cell = dynamic_cast<CellRendererToggle*>(edit_group_list.get_column_cell_renderer (0));
+       CellRendererToggle *active_cell = dynamic_cast<CellRendererToggle*>(edit_group_display.get_column_cell_renderer (0));
        active_cell->property_activatable() = true;
        active_cell->property_radio() = false;
 
-       edit_group_list.set_name ("MixerGroupList");
-       //edit_group_list.set_shadow_type (Gtk::SHADOW_IN);
-       route_list.set_headers_visible (false);
-       edit_group_list.set_reorderable (false);
-       edit_group_list.set_size_request (75, -1);
-       edit_group_list.columns_autosize ();
-       edit_group_list.get_selection()->set_mode (Gtk::SELECTION_MULTIPLE);
+       edit_group_display.set_name ("MixerGroupList");
+       edit_group_display.columns_autosize ();
+       edit_group_display.get_selection()->set_mode (SELECTION_MULTIPLE);
+       edit_group_display.set_reorderable (false);
+
+       edit_group_display.set_size_request (75, -1);
 
-       edit_group_list_scroller.add (edit_group_list);
-       edit_group_list_scroller.set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
+       edit_group_list_scroller.add (edit_group_display);
+       edit_group_list_scroller.set_policy (POLICY_AUTOMATIC, POLICY_AUTOMATIC);
 
        edit_group_list_button.signal_clicked().connect (mem_fun(*this, &Editor::edit_group_list_button_clicked));
-       edit_group_list.signal_button_press_event().connect (mem_fun(*this, &Editor::edit_group_list_button_press_event));
-       edit_group_list.get_selection()->signal_changed().connect (mem_fun(*this, &Editor::edit_group_selection_changed));
+       edit_group_display.signal_button_press_event().connect (mem_fun(*this, &Editor::edit_group_list_button_press_event));
+       edit_group_display.get_selection()->signal_changed().connect (mem_fun(*this, &Editor::edit_group_selection_changed));
        
        TreeModel::Row row = *(group_model->append());
        row[group_columns.is_active] = false;
        row[group_columns.text] = (_("-all-"));
-       edit_group_list.get_selection()->select (row);
-/* GTK2FIX is set_data(0) setting the is_active to false here?
-       list<string> stupid_list;
+       row[group_columns.routegroup] = 0;
+       edit_group_display.get_selection()->select (row);
 
-       stupid_list.push_back ("*");
-       stupid_list.push_back (_("-all-"));
-
-       edit_group_list.rows().push_back (stupid_list);
-       edit_group_list.rows().back().set_data (0);
-       edit_group_list.rows().back().select();
-       
-*/
        edit_group_vbox.pack_start (edit_group_list_button, false, false);
        edit_group_vbox.pack_start (edit_group_list_scroller, true, true);
        
-       route_list_frame.set_name ("BaseFrame");
-       route_list_frame.set_shadow_type (Gtk::SHADOW_IN);
-       route_list_frame.add (route_list_scroller);
-
-       edit_group_list_frame.set_name ("BaseFrame");
-       edit_group_list_frame.set_shadow_type (Gtk::SHADOW_IN);
-       edit_group_list_frame.add (edit_group_vbox);
-
-       route_group_vpane.add1 (route_list_frame);
-       route_group_vpane.add2 (edit_group_list_frame);
-
-       list_vpacker.pack_start (route_group_vpane, true, true);
+       region_list_display.set_size_request (100, -1);
+       region_list_display.set_name ("RegionListDisplay");
 
        region_list_model = TreeStore::create (region_list_columns);
-       region_list_sort_model = TreeModelSort::create (region_list_model);
        region_list_model->set_sort_func (0, mem_fun (*this, &Editor::region_list_sorter));
+       region_list_model->set_sort_column (0, SORT_ASCENDING);
 
-       region_list_display.set_model (region_list_sort_model);
-       region_list_display.append_column (_("Regions"), region_list_columns.name);
+       region_list_display.set_model (region_list_model);
+       CellRendererText* renderer = manage( new CellRendererText() );
+       region_list_display.append_column (_("Regions"), *renderer);
+       region_list_display.set_headers_visible (false);
+
+       region_list_display.get_selection()->set_select_function (mem_fun (*this, &Editor::region_list_selection_filter));
+       
+       TreeViewColumn* tv_col = region_list_display.get_column(0);
+       tv_col->add_attribute(renderer->property_text(), region_list_columns.name);
+       tv_col->add_attribute(renderer->property_foreground_gdk(), region_list_columns.color_);
+       
        region_list_display.set_reorderable (true);
-       region_list_display.set_size_request (100, -1);
-       region_list_display.set_data ("editor", this);
-       region_list_display.set_flags (Gtk::CAN_FOCUS);
-       region_list_display.set_name ("RegionListDisplay");
 
-       region_list_scroller.add (region_list_display);
-       region_list_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
+       region_list_display.get_selection()->set_mode (SELECTION_MULTIPLE);
+       region_list_display.add_object_drag (region_list_columns.region.index(), "regions");
 
-       list<Gtk::TargetEntry> region_list_target_table;
+       /* setup DnD handling */
+       
+       list<TargetEntry> region_list_target_table;
        
-       region_list_target_table.push_back (TargetEntry ("STRING"));
        region_list_target_table.push_back (TargetEntry ("text/plain"));
        region_list_target_table.push_back (TargetEntry ("text/uri-list"));
        region_list_target_table.push_back (TargetEntry ("application/x-rootwin-drop"));
+       
+       region_list_display.add_drop_targets (region_list_target_table);
+       region_list_display.signal_drag_data_received().connect (mem_fun(*this, &Editor::region_list_display_drag_data_received));
 
-       // GTK2FIX
-       // region_list_display.drag_dest_set (region_list_target_table, DEST_DEFAULT_ALL, GdkDragAction (Gdk::ACTION_COPY|Gdk::ACTION_MOVE));
-       // region_list_display.signal_drag_data_received().connect (mem_fun(*this, &Editor::region_list_display_drag_data_received));
+       region_list_scroller.add (region_list_display);
+       region_list_scroller.set_policy (POLICY_NEVER, POLICY_AUTOMATIC);
 
        region_list_display.signal_key_press_event().connect (mem_fun(*this, &Editor::region_list_display_key_press));
        region_list_display.signal_key_release_event().connect (mem_fun(*this, &Editor::region_list_display_key_release));
-       region_list_display.signal_button_press_event().connect (mem_fun(*this, &Editor::region_list_display_button_press));
+       region_list_display.signal_button_press_event().connect (mem_fun(*this, &Editor::region_list_display_button_press), false);
        region_list_display.signal_button_release_event().connect (mem_fun(*this, &Editor::region_list_display_button_release));
        region_list_display.get_selection()->signal_changed().connect (mem_fun(*this, &Editor::region_list_selection_changed));
-       // GTK2FIX
-       //region_list_display.unselect_row.connect (mem_fun(*this, &Editor::region_list_display_unselected));
-       //region_list_display.signal_columns_changed().connect (mem_fun(*this, &Editor::region_list_column_click));
+       // region_list_display.signal_popup_menu().connect (bind (mem_fun (*this, &Editor::show_region_list_display_context_menu), 1, 0));
        
        named_selection_scroller.add (named_selection_display);
-       named_selection_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
+       named_selection_scroller.set_policy (POLICY_NEVER, POLICY_AUTOMATIC);
 
        named_selection_model = TreeStore::create (named_selection_columns);
        named_selection_display.set_model (named_selection_model);
+       named_selection_display.append_column (_("Chunks"), named_selection_columns.text);
+       named_selection_display.set_headers_visible (false);
+       named_selection_display.set_size_request (100, -1);
        named_selection_display.set_name ("RegionListDisplay");
+       
+       named_selection_display.get_selection()->set_mode (SELECTION_SINGLE);
        named_selection_display.set_size_request (100, -1);
-       named_selection_display.set_headers_visible (true);
-       named_selection_display.set_headers_clickable (true);
-       named_selection_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
-       named_selection_display.signal_button_press_event().connect (mem_fun(*this, &Editor::named_selection_display_button_press));
+       named_selection_display.signal_button_press_event().connect (mem_fun(*this, &Editor::named_selection_display_button_press), false);
        named_selection_display.get_selection()->signal_changed().connect (mem_fun (*this, &Editor::named_selection_display_selection_changed));
 
-       region_selection_vpane.pack1 (region_list_scroller, true, true);
-       region_selection_vpane.pack2 (named_selection_scroller, true, true);
+       /* SNAPSHOTS */
 
-       canvas_region_list_pane.pack1 (edit_frame, true, true);
-       canvas_region_list_pane.pack2 (region_selection_vpane, true, true);
+       snapshot_display_model = ListStore::create (snapshot_display_columns);
+       snapshot_display.set_model (snapshot_display_model);
+       snapshot_display.append_column (X_("snapshot"), snapshot_display_columns.visible_name);
+       snapshot_display.set_name ("SnapshotDisplayList");
+       snapshot_display.set_size_request (75, -1);
+       snapshot_display.set_headers_visible (false);
+       snapshot_display.set_reorderable (false);
+       snapshot_display_scroller.add (snapshot_display);
+       snapshot_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 
-       track_list_canvas_pane.signal_size_allocate().connect_notify (bind (mem_fun(*this, &Editor::pane_allocation_handler),
-                                                                           static_cast<Gtk::Paned*> (&track_list_canvas_pane)));
-       canvas_region_list_pane.signal_size_allocate().connect_notify (bind (mem_fun(*this, &Editor::pane_allocation_handler),
-                                                                   static_cast<Gtk::Paned*> (&canvas_region_list_pane)));
-       route_group_vpane.signal_size_allocate().connect_notify (bind (mem_fun(*this, &Editor::pane_allocation_handler),
-                                                             static_cast<Gtk::Paned*> (&route_group_vpane)));
-       region_selection_vpane.signal_size_allocate().connect_notify (bind (mem_fun(*this, &Editor::pane_allocation_handler),
-                                                                  static_cast<Gtk::Paned*> (&region_selection_vpane)));
-       
-       track_list_canvas_pane.pack1 (list_vpacker, true, true);
-       track_list_canvas_pane.pack2 (canvas_region_list_pane, true, true);
+       snapshot_display.get_selection()->signal_changed().connect (mem_fun(*this, &Editor::snapshot_display_selection_changed));
+       snapshot_display.signal_button_press_event().connect (mem_fun (*this, &Editor::snapshot_display_button_press), false);
 
-       /* provide special pane-handle event handling for easy "hide" action */
+               the_notebook.append_page (region_list_scroller, _("Regions"));
+               the_notebook.append_page (route_list_scroller, _("Tracks/Busses"));
+       the_notebook.append_page (snapshot_display_scroller, _("Snapshots"));
+       the_notebook.append_page (edit_group_vbox, _("Edit Groups"));
+       the_notebook.append_page (named_selection_scroller, _("Chunks"));
+       the_notebook.set_show_tabs (true);
+       the_notebook.set_scrollable (true);
+       the_notebook.popup_enable ();
 
-       /* 0: collapse to show left/upper child
-          1: collapse to show right/lower child
-       */
+       TearOff *notebook_tearoff = manage (new TearOff (the_notebook, true));
+       notebook_tearoff->tearoff_window().set_size_request (200, 400);
 
-       route_group_vpane.set_data ("collapse-direction", (gpointer) 0);
-       region_selection_vpane.set_data ("collapse-direction", (gpointer) 0);
-       canvas_region_list_pane.set_data ("collapse-direction", (gpointer) 0);
-       track_list_canvas_pane.set_data ("collapse-direction", (gpointer) 1);
-
-       route_group_vpane.signal_button_release_event().connect (bind (sigc::ptr_fun (pane_handler), static_cast<Paned*> (&route_group_vpane)));
-       region_selection_vpane.signal_button_release_event().connect (bind (sigc::ptr_fun (pane_handler), static_cast<Paned*> (&region_selection_vpane)));
-       canvas_region_list_pane.signal_button_release_event().connect (bind (sigc::ptr_fun (pane_handler), static_cast<Paned*> (&canvas_region_list_pane)));
-       track_list_canvas_pane.signal_button_release_event().connect (bind (sigc::ptr_fun (pane_handler), static_cast<Paned*> (&track_list_canvas_pane)));
+       edit_pane.pack1 (edit_frame, true, true);
+       edit_pane.pack2 (*notebook_tearoff, true, true);
+       
+       edit_pane.signal_size_allocate().connect_notify (bind (mem_fun(*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&edit_pane)));
 
        top_hbox.pack_start (toolbar_frame, true, true);
 
        HBox *hbox = manage (new HBox);
-       hbox->pack_start (track_list_canvas_pane, true, true);
+       hbox->pack_start (edit_pane, true, true);
 
        global_vpacker.pack_start (top_hbox, false, false);
        global_vpacker.pack_start (*hbox, true, true);
@@ -679,8 +683,13 @@ Editor::Editor (AudioEngine& eng)
        global_hpacker.pack_start (global_vpacker, true, true);
 
        set_name ("EditorWindow");
+       add_accel_group (ActionManager::ui_manager->get_accel_group());
 
        vpacker.pack_end (global_hpacker, true, true);
+
+       /* register actions now so that set_state() can find them and set toggles/checks etc */
+       
+       register_actions ();
        
        XMLNode* node = ARDOUR_UI::instance()->editor_settings();
        set_state (*node);
@@ -692,8 +701,8 @@ Editor::Editor (AudioEngine& eng)
 
        /* nudge stuff */
 
-       nudge_forward_button.add (*(manage (new Gtk::Image (Gdk::Pixbuf::create_from_xpm_data(right_arrow_xpm)))));
-       nudge_backward_button.add (*(manage (new Gtk::Image (Gdk::Pixbuf::create_from_xpm_data(left_arrow_xpm)))));
+       nudge_forward_button.add (*(manage (new Image (Gdk::Pixbuf::create_from_xpm_data(right_arrow_xpm)))));
+       nudge_backward_button.add (*(manage (new Image (Gdk::Pixbuf::create_from_xpm_data(left_arrow_xpm)))));
 
        ARDOUR_UI::instance()->tooltips().set_tip (nudge_forward_button, _("Nudge region/selection forwards"));
        ARDOUR_UI::instance()->tooltips().set_tip (nudge_backward_button, _("Nudge region/selection backwards"));
@@ -796,7 +805,8 @@ void
 Editor::show_window ()
 {
        show_all ();
-       
+       present ();
+
        /* now reset all audio_time_axis heights, because widgets might need
           to be re-hidden
        */
@@ -812,9 +822,8 @@ Editor::show_window ()
 void
 Editor::tie_vertical_scrolling ()
 {
-       edit_controls_scroller.get_vadjustment()->set_value (track_canvas_scroller.get_vadjustment()->get_value());
-
-       float y1 = track_canvas_scroller.get_vadjustment()->get_value();
+       double y1 = vertical_adjustment.get_value();
+       controls_layout.get_vadjustment()->set_value (y1);
        playhead_cursor->set_y_axis(y1);
        edit_cursor->set_y_axis(y1);
 }
@@ -834,7 +843,7 @@ Editor::set_frames_per_unit (double fpu)
 
        // convert fpu to frame count
 
-       frames = (jack_nframes_t) (fpu * canvas_width);
+       frames = (jack_nframes_t) floor (fpu * canvas_width);
        
        /* don't allow zooms that fit more than the maximum number
           of frames into an 800 pixel wide space.
@@ -855,12 +864,11 @@ Editor::set_frames_per_unit (double fpu)
        */
        
        if (session) {
-               track_canvas_scroller.get_hadjustment()->set_upper (session->current_end_frame() / frames_per_unit);
+               horizontal_adjustment.set_upper (session->current_end_frame() / frames_per_unit);
        }
        
        if (!no_zoom_repos_update) {
-               track_canvas_scroller.get_hadjustment()->set_value (leftmost_frame/frames_per_unit);
-               update_hscroller ();
+               horizontal_adjustment.set_value (leftmost_frame/frames_per_unit);
                update_fixed_rulers ();
                tempo_map_changed (Change (0));
        }
@@ -900,10 +908,10 @@ Editor::reposition_x_origin (jack_nframes_t frame)
        if (frame != leftmost_frame) {
                leftmost_frame = frame;
                double pixel = frame_to_pixel (frame);
-               if (pixel >= track_canvas_scroller.get_hadjustment()->get_upper()) {
-                       track_canvas_scroller.get_hadjustment()->set_upper (frame_to_pixel (frame + (current_page_frames())));
+               if (pixel >= horizontal_adjustment.get_upper()) {
+                       horizontal_adjustment.set_upper (frame_to_pixel (frame + (current_page_frames())));
                }
-               track_canvas_scroller.get_hadjustment()->set_value (frame/frames_per_unit);
+               horizontal_adjustment.set_value (frame/frames_per_unit);
                XOriginChanged (); /* EMIT_SIGNAL */
        }
 }
@@ -924,15 +932,14 @@ Editor::zoom_adjustment_changed ()
                return;
        }
 
-       double fpu = (double) zoom_range_clock.current_duration() / (double) canvas_width;
+       double fpu = zoom_range_clock.current_duration() / canvas_width;
 
        if (fpu < 1.0) {
                fpu = 1.0;
-               zoom_range_clock.set ((jack_nframes_t) (fpu * canvas_width));
-       }
-       else if (fpu > session->current_end_frame() / (double) canvas_width) {
-               fpu = session->current_end_frame() / (double) canvas_width;
-               zoom_range_clock.set ((jack_nframes_t) (fpu * canvas_width));
+               zoom_range_clock.set ((jack_nframes_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 ((jack_nframes_t) floor (fpu * canvas_width));
        }
        
        temporal_zoom (fpu);
@@ -941,14 +948,8 @@ Editor::zoom_adjustment_changed ()
 void 
 Editor::canvas_horizontally_scrolled ()
 {
-       /* XXX note the potential loss of accuracy here caused by
-          adjustments being 32bit floats with only a 24 bit mantissa,
-          whereas jack_nframes_t is at least a 32 bit uint32_teger.
-       */
-       
-       leftmost_frame = (jack_nframes_t) floor (track_canvas_scroller.get_hadjustment()->get_value() * frames_per_unit);
+       leftmost_frame = (jack_nframes_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
        
-       update_hscroller ();
        update_fixed_rulers ();
        
        if (!edit_hscroll_dragging) {
@@ -990,87 +991,7 @@ void
 Editor::on_realize ()
 {
        Window::on_realize ();
-
-       /* Even though we're not using acceleration, we want the
-          labels to show up.
-       */
-
-       track_context_menu.accelerate (*this->get_toplevel());
-       track_region_context_menu.accelerate (*this->get_toplevel());
-       
-        Glib::RefPtr<Gdk::Pixmap> empty_pixmap = Gdk::Pixmap::create(get_window(), 1, 1, 1);
-       Glib::RefPtr<Gdk::Pixmap> empty_bitmap = Gdk::Pixmap::create(get_window(), 1, 1, 1);
-       Gdk::Color white ("#ffffff" );
-
-       null_cursor = new Gdk::Cursor(empty_pixmap, empty_bitmap, white, white, 0, 0);
-}
-
-void
-Editor::track_canvas_allocate (Gtk::Allocation alloc)
-{
-       canvas_width = alloc.get_width();
-       canvas_height = alloc.get_height();
-
-       if (session == 0 && !ARDOUR_UI::instance()->will_create_new_session_automatically()) {
-
-               Pango::FontDescription font = get_font_for_style (N_("FirstActionMessage"));
-
-               const char *txt1 = _("Start a new session\n");
-               const char *txt2 = _("via Session menu");
-
-               /* this mess of code is here to find out how wide this text is and
-                  position the message in the center of the editor window. there
-                  are two lines, so we use the longer of the the lines to
-                  compute width, and multiply the height by 2.
-               */
-                       
-               int pixel_height;
-               int pixel_width;
-               
-               /* this is a dummy widget that exists so that we can get the
-                  style from the RC file. 
-               */
-               
-               Label foo (_(txt2));
-               Glib::RefPtr<Pango::Layout> layout;
-               foo.set_name ("NoSessionMessage");
-               foo.ensure_style ();
-               
-               layout = foo.create_pango_layout (_(txt2));
-               layout->set_font_description (font);
-               layout->get_pixel_size (pixel_width, pixel_height);
-                       
-               if (first_action_message == 0) {
-                       
-                       char txt[strlen(txt1)+strlen(txt2)+1];
-                       
-                       /* merge both lines */
-                       
-                       strcpy (txt, _(txt1));
-                       strcat (txt, _(txt2));
-                       
-                       first_action_message = new ArdourCanvas::Text (*track_canvas.root());
-                       first_action_message->property_font_desc() = font;
-                       first_action_message->property_fill_color_rgba() = color_map[cFirstActionMessage];
-                       first_action_message->property_x() = (gdouble) (canvas_width - pixel_width) / 2.0;
-                       first_action_message->property_y() = (gdouble) (canvas_height/2.0) - (2.0 * (pixel_height));
-                       first_action_message->property_anchor() = ANCHOR_NORTH_WEST;
-                       first_action_message->property_text() = ustring (txt);
-                       
-               } else {
-
-                       /* center it */
-                       first_action_message->property_x() = (gdouble) (canvas_width - pixel_width) / 2.0;
-                       first_action_message->property_y() = (gdouble) (canvas_height/2.0) - (2.0 * (pixel_height));
-               }
-       }
-
-       zoom_range_clock.set ((jack_nframes_t) (canvas_width * frames_per_unit));
-       edit_cursor->set_position (edit_cursor->current_frame);
-       playhead_cursor->set_position (playhead_cursor->current_frame);
-       reset_scrolling_region (&alloc);
-       
-       Resized (); /* EMIT_SIGNAL */
+       Realized ();
 }
 
 void
@@ -1155,13 +1076,13 @@ Editor::map_position_change (jack_nframes_t frame)
 void
 Editor::center_screen (jack_nframes_t frame)
 {
-       float page = canvas_width * frames_per_unit;
+       double page = canvas_width * frames_per_unit;
 
        /* if we're off the page, then scroll.
         */
        
        if (frame < leftmost_frame || frame >= leftmost_frame + page) {
-               center_screen_internal (frame,page);
+               center_screen_internal (frame, page);
        }
 }
 
@@ -1185,15 +1106,13 @@ Editor::handle_new_duration ()
        reset_scrolling_region ();
 
        if (session) {
-               track_canvas_scroller.get_hadjustment()->set_upper (session->current_end_frame() / frames_per_unit);
-               track_canvas_scroller.get_hadjustment()->set_value (leftmost_frame/frames_per_unit);
+               horizontal_adjustment.set_upper (session->current_end_frame() / frames_per_unit);
+               horizontal_adjustment.set_value (leftmost_frame/frames_per_unit);
        }
-       
-       update_hscroller ();
 }
 
 void
-Editor::update_title_s (string snap_name)
+Editor::update_title_s (const string & snap_name)
 {
        ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::update_title_s), snap_name));
        
@@ -1238,8 +1157,6 @@ Editor::connect_to_session (Session *t)
                first_action_message->hide();
        }
 
-       flush_track_canvas();
-
        update_title ();
 
        session->going_away.connect (mem_fun(*this, &Editor::session_going_away));
@@ -1322,7 +1239,7 @@ Editor::connect_to_session (Session *t)
        update_punch_range_view (true);
        
        session->ControlChanged.connect (mem_fun(*this, &Editor::queue_session_control_changed));
-
+       session->StateSaved.connect (mem_fun(*this, &Editor::session_state_saved));
        
        refresh_location_display ();
        session->locations()->added.connect (mem_fun(*this, &Editor::add_new_location));
@@ -1335,15 +1252,13 @@ Editor::connect_to_session (Session *t)
 
        redisplay_regions ();
        redisplay_named_selections ();
+       redisplay_snapshots ();
 
-       //route_list.freeze (); GTK2FIX
        route_display_model->clear ();
+       no_route_list_redisplay = true;
        session->foreach_route (this, &Editor::handle_new_route);
-       // route_list.select_all ();
-       // GTK2FIX
-       //route_list.sort ();
-       route_list_reordered ();
-       //route_list.thaw ();
+       no_route_list_redisplay = false;
+       route_list_display.get_selection()->select_all ();
 
        for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
                (static_cast<TimeAxisView*>(*i))->set_samples_per_unit (frames_per_unit);
@@ -1356,10 +1271,9 @@ Editor::connect_to_session (Session *t)
 
        leftmost_frame = 0;
        
-       track_canvas_scroller.get_hadjustment()->set_upper (session->current_end_frame() / frames_per_unit);
-       track_canvas_scroller.get_hadjustment()->set_value (0);
+       horizontal_adjustment.set_upper (session->current_end_frame() / frames_per_unit);
+       horizontal_adjustment.set_value (0);
 
-       update_hscroller ();
        restore_ruler_visibility ();
        tempo_map_changed (Change (0));
 
@@ -1378,7 +1292,7 @@ Editor::connect_to_session (Session *t)
                TreeModel::Children rows = route_display_model->children();
                TreeModel::Children::iterator i;
        
-               //route_list.freeze ();
+               //route_list_display.freeze ();
                
                for (i = rows.begin(); i != rows.end(); ++i) {
                  TimeAxisView *tv =  (*i)[route_display_columns.tv];
@@ -1386,13 +1300,13 @@ Editor::connect_to_session (Session *t)
 
                        if ((atv = dynamic_cast<AudioTimeAxisView*>(tv)) != 0) {
                                if (atv->route().master()) {
-                                       route_list.get_selection()->unselect (i);
+                                       route_list_display.get_selection()->unselect (i);
                                        //(*i)->unselect ();
                                }
                        }
                }
 
-               //route_list.thaw ();
+               //route_list_display.thaw ();
        }
 }
 
@@ -1400,16 +1314,6 @@ void
 Editor::build_cursors ()
 {
        using namespace Gdk;
-
-       Gdk::Color fg ("#ff0000"); /* Red. */
-       Gdk::Color bg ("#0000ff"); /* Blue. */
-
-       {
-               RefPtr<Bitmap> source, mask;
-               source = Bitmap::create (hand_bits, hand_width, hand_height);
-               mask = Bitmap::create (handmask_bits, handmask_width, handmask_height);
-               grabber_cursor = new Gdk::Cursor (source, mask, fg, bg, hand_x_hot, hand_y_hot);
-       }
        
        Gdk::Color mbg ("#000000" ); /* Black */
        Gdk::Color mfg ("#0000ff" ); /* Blue. */
@@ -1439,12 +1343,13 @@ Editor::build_cursors ()
                speaker_cursor = new Gdk::Cursor (source, mask, ffg, fbg, speaker_cursor_x_hot, speaker_cursor_y_hot);
        }
 
-       cross_hair_cursor = new Gdk::Cursor (Gdk::CROSSHAIR);
-       trimmer_cursor =  new Gdk::Cursor (Gdk::SB_H_DOUBLE_ARROW);
-       selector_cursor = new Gdk::Cursor (Gdk::XTERM);
-       time_fx_cursor = new Gdk::Cursor (Gdk::SIZING);
-       wait_cursor = new Gdk::Cursor  (Gdk::WATCH);
-       timebar_cursor = new Gdk::Cursor(Gdk::LEFT_PTR);
+       grabber_cursor = new Gdk::Cursor (HAND2);
+       cross_hair_cursor = new Gdk::Cursor (CROSSHAIR);
+       trimmer_cursor =  new Gdk::Cursor (SB_H_DOUBLE_ARROW);
+       selector_cursor = new Gdk::Cursor (XTERM);
+       time_fx_cursor = new Gdk::Cursor (SIZING);
+       wait_cursor = new Gdk::Cursor  (WATCH);
+       timebar_cursor = new Gdk::Cursor(LEFT_PTR);
 }
 
 void
@@ -1562,11 +1467,9 @@ Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type,
                if (!with_selection) {
                        if (region_edit_menu_split_item) {
                                if (clicked_regionview && clicked_regionview->region.covers (edit_cursor->current_frame)) {
-                                       // GTK2FIX find the action, change its sensitivity
-                                       // region_edit_menu_split_item->set_sensitive (true);
+                                       ActionManager::set_sensitive (ActionManager::edit_cursor_in_region_sensitive_actions, true);
                                } else {
-                                       // GTK2FIX see above
-                                       // region_edit_menu_split_item->set_sensitive (false);
+                                       ActionManager::set_sensitive (ActionManager::edit_cursor_in_region_sensitive_actions, false);
                                }
                        }
                        if (region_edit_menu_split_multichannel_item) {
@@ -2181,8 +2084,7 @@ Editor::set_state (const XMLNode& node)
        }
 
        set_default_size(width, height);
-       // GTK2FIX
-       // set_position(x, y-yoff);
+       move (x, y-yoff);
 
        if ((prop = node.property ("zoom-focus"))) {
                set_zoom_focus ((ZoomFocus) atoi (prop->value()));
@@ -2220,8 +2122,13 @@ Editor::set_state (const XMLNode& node)
 
        if ((prop = node.property ("follow-playhead"))) {
                bool yn = (prop->value() == "yes");
-               _follow_playhead = !yn;
-               set_follow_playhead (yn);
+               RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("ToggleFollowPlayhead"));
+               if (act) {
+                       RefPtr<ToggleAction> tact = RefPtr<ToggleAction>::cast_dynamic(act);
+                       /* do it twice to force the change */
+                       tact->set_active (!yn);
+                       tact->set_active (yn);
+               }
        }
 
        if ((prop = node.property ("xfades-visible"))) {
@@ -2279,14 +2186,8 @@ Editor::get_state ()
                geometry->add_property("x_off", string(buf));
                snprintf(buf, sizeof(buf), "%d", yoff);
                geometry->add_property("y_off", string(buf));
-               snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&canvas_region_list_pane)->gobj()));
-               geometry->add_property("canvas_region_list_pane_pos", string(buf));
-               snprintf(buf,sizeof(buf), "%d", gtk_paned_get_position (static_cast<Paned*>(&track_list_canvas_pane)->gobj()));
-               geometry->add_property("track_list_canvas_pane_pos", string(buf));
-               snprintf(buf,sizeof(buf), "%d", gtk_paned_get_position (static_cast<Paned*>(&region_selection_vpane)->gobj()));
-               geometry->add_property("region_selection_pane_pos", string(buf));
-               snprintf(buf,sizeof(buf), "%d", gtk_paned_get_position (static_cast<Paned*>(&route_group_vpane)->gobj()));
-               geometry->add_property("route_group_pane_pos", string(buf));
+               snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&edit_pane)->gobj()));
+               geometry->add_property("edit_pane_pos", string(buf));
 
                node->add_child_nocopy (*geometry);
        }
@@ -2574,10 +2475,10 @@ Editor::setup_toolbar ()
        mouse_mode_tearoff = manage (new TearOff (mouse_mode_button_table));
        mouse_mode_tearoff->set_name ("MouseModeBase");
 
-       mouse_mode_tearoff->Detach.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Gtk::Box*>(&toolbar_hbox), 
-                                                 mouse_mode_tearoff->tearoff_window()));
-       mouse_mode_tearoff->Attach.connect (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Gtk::Box*> (&toolbar_hbox), 
-                                                 mouse_mode_tearoff->tearoff_window(), 1));
+       mouse_mode_tearoff->Detach.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox), 
+                                                 &mouse_mode_tearoff->tearoff_window()));
+       mouse_mode_tearoff->Attach.connect (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox), 
+                                                 &mouse_mode_tearoff->tearoff_window(), 1));
 
        mouse_move_button.set_name ("MouseModeButton");
        mouse_select_button.set_name ("MouseModeButton");
@@ -2593,12 +2494,12 @@ Editor::setup_toolbar ()
        ARDOUR_UI::instance()->tooltips().set_tip (mouse_timefx_button, _("stretch/shrink regions"));
        ARDOUR_UI::instance()->tooltips().set_tip (mouse_audition_button, _("listen to specific regions"));
 
-       mouse_move_button.unset_flags (Gtk::CAN_FOCUS);
-       mouse_select_button.unset_flags (Gtk::CAN_FOCUS);
-       mouse_gain_button.unset_flags (Gtk::CAN_FOCUS);
-       mouse_zoom_button.unset_flags (Gtk::CAN_FOCUS);
-       mouse_timefx_button.unset_flags (Gtk::CAN_FOCUS);
-       mouse_audition_button.unset_flags (Gtk::CAN_FOCUS);
+       mouse_move_button.unset_flags (CAN_FOCUS);
+       mouse_select_button.unset_flags (CAN_FOCUS);
+       mouse_gain_button.unset_flags (CAN_FOCUS);
+       mouse_zoom_button.unset_flags (CAN_FOCUS);
+       mouse_timefx_button.unset_flags (CAN_FOCUS);
+       mouse_audition_button.unset_flags (CAN_FOCUS);
 
        mouse_select_button.signal_toggled().connect (bind (mem_fun(*this, &Editor::mouse_mode_toggled), Editing::MouseRange));
        mouse_select_button.signal_button_release_event().connect (mem_fun(*this, &Editor::mouse_select_button_release));
@@ -2632,7 +2533,8 @@ Editor::setup_toolbar ()
 
        /* XXX another disgusting hack because of the way combo boxes size themselves */
 
-       Gtkmm2ext::set_size_request_to_display_given_text (edit_mode_selector, "EdgtMode", 2, 10);
+       const guint32 FUDGE = 20; // Combo's are stupid - they steal space from the entry for the button
+       Gtkmm2ext::set_size_request_to_display_given_text (edit_mode_selector, "EdgtMode", 2+FUDGE, 10);
        set_popdown_strings (edit_mode_selector, internationalize (edit_mode_strings));
        edit_mode_box.pack_start (edit_mode_label, false, false);
        edit_mode_box.pack_start (edit_mode_selector, false, false);
@@ -2650,8 +2552,7 @@ Editor::setup_toolbar ()
 
        /* XXX another disgusting hack because of the way combo boxes size themselves */
 
-       const guint32 FUDGE = 10; // Combo's are stupid - they steal space from the entry for the button
-       Gtkmm2ext::set_size_request_to_display_given_text (snap_type_selector, "Region bounds", 2+FUDGE, 10);
+       Gtkmm2ext::set_size_request_to_display_given_text (snap_type_selector, "SMPTE Seconds", 2+FUDGE, 10);
        set_popdown_strings (snap_type_selector, internationalize (snap_type_strings));
 
        snap_type_box.pack_start (snap_type_label, false, false);
@@ -2668,7 +2569,7 @@ Editor::setup_toolbar ()
        snap_mode_box.set_spacing (3);
        snap_mode_box.set_border_width (3);
 
-       Gtkmm2ext::set_size_request_to_display_given_text (snap_mode_selector, "SngpMode", 2, 10);
+       Gtkmm2ext::set_size_request_to_display_given_text (snap_mode_selector, "SngpMode", 2+FUDGE, 10);
        set_popdown_strings (snap_mode_selector, internationalize (snap_mode_strings));
 
        snap_mode_box.pack_start (snap_mode_label, false, false);
@@ -2687,7 +2588,7 @@ Editor::setup_toolbar ()
 
        /* XXX another disgusting hack because of the way combo boxes size themselves */
 
-       Gtkmm2ext::set_size_request_to_display_given_text (zoom_focus_selector, "Edgt Cursor", 2, 10);
+       Gtkmm2ext::set_size_request_to_display_given_text (zoom_focus_selector, "Edgt Cursor", 2+FUDGE, 10);
        set_popdown_strings (zoom_focus_selector, internationalize (zoom_focus_strings));
 
        zoom_focus_box.pack_start (zoom_focus_label, false, false);
@@ -2704,23 +2605,35 @@ Editor::setup_toolbar ()
 
        selection_start_clock_label.set_text (_("Start:"));
        selection_end_clock_label.set_text (_("End:"));
-       edit_cursor_clock_label.set_text (_("Edit:"));
+       edit_cursor_clock_label.set_text (_("Edit"));
+
+       /* the zoom in/out buttons are generally taller than the clocks, so
+          put all the toolbar clocks into a size group with one of the 
+          buttons to make them all equal height.
+
+          this also applies to the various toolbar combos
+       */
 
-       toolbar_selection_clock_table.set_border_width (5);
-       toolbar_selection_clock_table.set_col_spacings (2);
-       toolbar_selection_clock_table.set_homogeneous (false);
+       RefPtr<SizeGroup> toolbar_clock_size_group = SizeGroup::create (SIZE_GROUP_VERTICAL);
+       toolbar_clock_size_group->add_widget (zoom_out_button);
+       toolbar_clock_size_group->add_widget (edit_cursor_clock);
+       toolbar_clock_size_group->add_widget (zoom_range_clock);
+       toolbar_clock_size_group->add_widget (nudge_clock);
+       toolbar_clock_size_group->add_widget (edit_mode_selector);
+       toolbar_clock_size_group->add_widget (snap_type_selector);
+       toolbar_clock_size_group->add_widget (snap_mode_selector);
+       toolbar_clock_size_group->add_widget (zoom_focus_selector);
 
-//     toolbar_selection_clock_table.attach (selection_start_clock_label, 0, 1, 0, 1, 0, 0, 0, 0);
-//     toolbar_selection_clock_table.attach (selection_end_clock_label, 1, 2, 0, 1, 0, 0, 0, 0);
-       toolbar_selection_clock_table.attach (edit_cursor_clock_label, 2, 3, 0, 1, FILL, FILL, 0, 0);
+       HBox* edit_clock_hbox = manage (new HBox());
+       VBox* edit_clock_vbox = manage (new VBox());
 
-//     toolbar_selection_clock_table.attach (selection_start_clock, 0, 1, 1, 2, 0, 0);
-//     toolbar_selection_clock_table.attach (selection_end_clock, 1, 2, 1, 2, 0, 0);
-       toolbar_selection_clock_table.attach (edit_cursor_clock, 2, 3, 1, 2, FILL, FILL);
+       edit_clock_hbox->pack_start (edit_cursor_clock, false, false);
 
+       edit_clock_vbox->set_spacing (3);
+       edit_clock_vbox->set_border_width (3);
+       edit_clock_vbox->pack_start (edit_cursor_clock_label, false, false);
+       edit_clock_vbox->pack_start (*edit_clock_hbox, false, false);
 
-//     toolbar_clock_vbox.set_spacing (2);
-//     toolbar_clock_vbox.set_border_width (10);
        /* the editor/mixer button will be enabled at session connect */
 
        editor_mixer_button.set_active(false);
@@ -2729,7 +2642,7 @@ Editor::setup_toolbar ()
        HBox* hbox = new HBox;
 
        hbox->pack_start (editor_mixer_button, false, false);
-       hbox->pack_start (toolbar_selection_clock_table, false, false);
+       hbox->pack_start (*edit_clock_vbox, false, false);
        hbox->pack_start (zoom_indicator_vbox, false, false); 
        hbox->pack_start (zoom_focus_box, false, false);
        hbox->pack_start (snap_type_box, false, false);
@@ -2762,10 +2675,10 @@ Editor::setup_toolbar ()
        tools_tearoff = new TearOff (*hbox);
        tools_tearoff->set_name ("MouseModeBase");
 
-       tools_tearoff->Detach.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Gtk::Box*>(&toolbar_hbox), 
-                                            tools_tearoff->tearoff_window()));
-       tools_tearoff->Attach.connect (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Gtk::Box*> (&toolbar_hbox), 
-                                            tools_tearoff->tearoff_window(), 0));
+       tools_tearoff->Detach.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox), 
+                                            &tools_tearoff->tearoff_window()));
+       tools_tearoff->Attach.connect (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox), 
+                                            &tools_tearoff->tearoff_window(), 0));
 
 
        toolbar_hbox.set_spacing (8);
@@ -2777,7 +2690,7 @@ Editor::setup_toolbar ()
        toolbar_base.set_name ("ToolBarBase");
        toolbar_base.add (toolbar_hbox);
 
-       toolbar_frame.set_shadow_type (Gtk::SHADOW_OUT);
+       toolbar_frame.set_shadow_type (SHADOW_OUT);
        toolbar_frame.set_name ("BaseFrame");
        toolbar_frame.add (toolbar_base);
 }
@@ -2879,130 +2792,80 @@ Editor::stop_canvas_autoscroll ()
 
 int
 Editor::convert_drop_to_paths (vector<string>& paths, 
-                              GdkDragContext     *context,
+                              const RefPtr<Gdk::DragContext>& context,
                               gint                x,
                               gint                y,
-                              GtkSelectionData   *data,
+                              const SelectionData& data,
                               guint               info,
                               guint               time)                               
 
 {      
-       string spath;
-       char *path;
-       int state;
-       gchar *tname = gdk_atom_name (data->type);
-
-       if (session == 0 || strcmp (tname, "text/plain") != 0) {
+       if (session == 0) {
                return -1;
        }
 
-       /* Parse the "uri-list" format that Nautilus provides, 
-          where each pathname is delimited by \r\n
-       */
+       vector<ustring> uris = data.get_uris();
 
-       path = (char *) data->data;
-       state = 0;
+       if (uris.empty()) {
+               
+               /* This is seriously fucked up. Nautilus doesn't say that its URI lists
+                  are actually URI lists. So do it by hand.
+               */
 
-       for (int n = 0; n < data->length; ++n) {
+               if (data.get_target() != "text/plain") {
+                       return -1;
+               }
+  
+               /* Parse the "uri-list" format that Nautilus provides, 
+                  where each pathname is delimited by \r\n
+               */
+       
+               const char* p = data.get_text().c_str();
+               const char* q;
 
-               switch (state) {
-               case 0:
-                       if (path[n] == '\r') {
-                               state = 1;
-                       } else {
-                               spath += path[n];
-                       }
-                       break;
-               case 1:
-                       if (path[n] == '\n') {
-                               paths.push_back (spath);
-                               spath = "";
-                               state = 0;
-                       } else {
-                               warning << _("incorrectly formatted URI list, ignored")
-                                       << endmsg;
-                               return -1;
+               while (p)
+               {
+                       if (*p != '#')
+                       {
+                               while (g_ascii_isspace (*p))
+                                       p++;
+                               
+                               q = p;
+                               while (*q && (*q != '\n') && (*q != '\r'))
+                                       q++;
+                               
+                               if (q > p)
+                               {
+                                       q--;
+                                       while (q > p && g_ascii_isspace (*q))
+                                               q--;
+                                       
+                                       if (q > p)
+                                       {
+                                               uris.push_back (ustring (p, q - p + 1));
+                                       }
+                               }
                        }
-                       break;
+                       p = strchr (p, '\n');
+                       if (p)
+                               p++;
                }
-       }
-
-       /* nautilus and presumably some other file managers prefix even text/plain with file:// */
-               
-       for (vector<string>::iterator p = paths.begin(); p != paths.end(); ++p) {
-
-               // cerr << "dropped text was " << *p << endl;
-
-               url_decode (*p);
 
-               // cerr << "decoded was " << *p << endl;
-
-               if ((*p).substr (0,7) == "file://") {
-                       (*p) = (*p).substr (7);
+               if (uris.empty()) {
+                       return -1;
                }
        }
        
-       return 0;
-}
-
-void  
-Editor::track_canvas_drag_data_received  (GdkDragContext     *context,
-                                         gint                x,
-                                         gint                y,
-                                         GtkSelectionData   *data,
-                                         guint               info,
-                                         guint               time)
-{
-       TimeAxisView* tvp;
-       AudioTimeAxisView* tv;
-       double cy;
-       vector<string> paths;
-       string spath;
-       GdkEvent ev;
-       jack_nframes_t frame;
-
-       if (convert_drop_to_paths (paths, context, x, y, data, info, time)) {
-               goto out;
-       }
-
-       /* D-n-D coordinates are window-relative, so convert to "world" coordinates
-        */
-
-       double wx;
-       double wy;
-
-       track_canvas.c2w( x, y, wx, wy);
-
-       ev.type = GDK_BUTTON_RELEASE;
-       ev.button.x = wx;
-       ev.button.y = wy;
-
-       frame = event_frame (&ev, 0, &cy);
-
-       snap_to (frame);
-
-       if ((tvp = trackview_by_y_position (cy)) == 0) {
-
-               /* drop onto canvas background: create a new track */
-
-               insert_paths_as_new_tracks (paths, false);
-
-               
-       } else if ((tv = dynamic_cast<AudioTimeAxisView*>(tvp)) != 0) {
-
-               /* check that its an audio track, not a bus */
-
-               if (tv->get_diskstream()) {
-
-                       for (vector<string>::iterator p = paths.begin(); p != paths.end(); ++p) {
-                               insert_sndfile_into (*p, true, tv, frame);
-                       }
+       for (vector<ustring>::iterator i = uris.begin(); i != uris.end(); ++i) {
+               if ((*i).substr (0,7) == "file://") {
+                       string p = *i;
+                       url_decode (p);
+                       cerr << "adding " << p << endl;
+                       paths.push_back (p.substr (7));
                }
-
        }
 
-  out:
-       gtk_drag_finish (context, TRUE, FALSE, time);
+       return 0;
 }
 
 void
@@ -3080,19 +2943,6 @@ Editor::commit_reversible_command ()
        }
 }
 
-void
-Editor::flush_track_canvas ()
-{
-       /* I don't think this is necessary, and only causes more problems.
-          I'm commenting it out
-          and if the imageframe folks don't have any issues, we can take
-          out this method entirely
-       */
-       
-       //gnome_canvas_update_now (GNOME_CANVAS(track_canvas));
-       //gtk_main_iteration ();
-}
-
 void
 Editor::set_selected_track_from_click (bool add, bool with_undo, bool no_remove)
 {
@@ -3473,7 +3323,7 @@ Editor::duplicate_dialog (bool dup_region)
        win.add_button (Stock::OK, RESPONSE_ACCEPT);
        win.add_button (Stock::CANCEL, RESPONSE_CANCEL);
 
-       win.set_position (Gtk::WIN_POS_MOUSE);
+       win.set_position (WIN_POS_MOUSE);
 
        entry.set_text ("1");
        set_size_request_to_display_given_text (entry, X_("12345678"), 20, 15);
@@ -3521,7 +3371,7 @@ Editor::hide_verbose_canvas_cursor ()
 }
 
 void
-Editor::set_verbose_canvas_cursor (string txt, double x, double y)
+Editor::set_verbose_canvas_cursor (const string & txt, double x, double y)
 {
        /* XXX get origin of canvas relative to root window,
           add x and y and check compared to gdk_screen_{width,height}
@@ -3532,7 +3382,7 @@ Editor::set_verbose_canvas_cursor (string txt, double x, double y)
 }
 
 void
-Editor::set_verbose_canvas_cursor_text (string txt)
+Editor::set_verbose_canvas_cursor_text (const string & txt)
 {
        verbose_canvas_cursor->property_text() = txt.c_str();
 }
@@ -3724,27 +3574,6 @@ Editor::point_selection_changed ()
        }
 }
 
-void
-Editor::run_sub_event_loop ()
-{
-       sub_event_loop_status = 0;
-       Main::run ();
-}
-
-void
-Editor::finish_sub_event_loop (int status)
-{
-       Main::quit ();
-       sub_event_loop_status = status;
-}
-
-gint
-Editor::finish_sub_event_loop_on_delete (GdkEventAny *ignored, int32_t status)
-{
-       finish_sub_event_loop (status);
-       return TRUE;
-}
-
 gint
 Editor::mouse_select_button_release (GdkEventButton* ev)
 {
@@ -3815,7 +3644,7 @@ Editor::ensure_float (Window& win)
 }
 
 void 
-Editor::pane_allocation_handler (Gtk::Allocation &alloc, Gtk::Paned* which)
+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.
@@ -3826,7 +3655,7 @@ Editor::pane_allocation_handler (Gtk::Allocation &alloc, Gtk::Paned* which)
        char buf[32];
        XMLNode* node = ARDOUR_UI::instance()->editor_settings();
        int width, height;
-       static int32_t done[4] = { 0, 0, 0, 0 };
+       static int32_t done;
        XMLNode* geometry;
 
        if ((geometry = find_named_node (*node, "geometry")) == 0) {
@@ -3837,89 +3666,37 @@ Editor::pane_allocation_handler (Gtk::Allocation &alloc, Gtk::Paned* which)
                height = atoi(geometry->property("y_size")->value());
        }
 
-       if (which == static_cast<Gtk::Paned*> (&track_list_canvas_pane)) {
-
-               if (done[0]) {
-                       return;
-               }
-
-               if (!geometry || (prop = geometry->property("track_list_canvas_pane_pos")) == 0) {
-                       pos = 75;
-                       snprintf (buf, sizeof(buf), "%d", pos);
-               } else {
-                       pos = atoi (prop->value());
-               }
-
-               if ((done[0] = GTK_WIDGET(track_list_canvas_pane.gobj())->allocation.width > pos)) {
-                       track_list_canvas_pane.set_position (pos);
-               }
-
-       } else if (which == static_cast<Gtk::Paned*> (&canvas_region_list_pane)) {
-
-               if (done[1]) {
-                       return;
-               }
-
-               if (!geometry || (prop = geometry->property("canvas_region_list_pane_pos")) == 0) {
-                       pos = width - (95 * 2);
-                       snprintf (buf, sizeof(buf), "%d", pos);
-               } else {
-                       pos = atoi (prop->value());
-               }
-
-               if ((done[1] = GTK_WIDGET(canvas_region_list_pane.gobj())->allocation.width > pos)) {
-                       canvas_region_list_pane.set_position (pos);
-               }
-
-       } else if (which == static_cast<Gtk::Paned*> (&route_group_vpane)) {
+       if (which == static_cast<Paned*> (&edit_pane)) {
 
-               if (done[2]) {
+               if (done) {
                        return;
                }
 
-               if (!geometry || (prop = geometry->property("route_group_pane_pos")) == 0) {
-                       pos = width - (95 * 2);
+               if (!geometry || (prop = geometry->property ("edit_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 ((done[2] = GTK_WIDGET(route_group_vpane.gobj())->allocation.height > pos)) {
-                       route_group_vpane.set_position (pos);
-               }
-
-       } else if (which == static_cast<Gtk::Paned*> (&region_selection_vpane)) {
-
-               if (done[3]) {
-                       return;
-               }
-
-               if (!geometry || (prop = geometry->property("region_selection_pane_pos")) == 0) {
-                       pos = width - (95 * 2);
-                       snprintf (buf, sizeof(buf), "%d", pos);
-               } else {
-                       pos = atoi (prop->value());
-               }
-
-               if ((done[3] = GTK_WIDGET(region_selection_vpane.gobj())->allocation.height > pos)) { 
-                       region_selection_vpane.set_position (pos);
+               
+               if ((done = GTK_WIDGET(edit_pane.gobj())->allocation.width > pos)) {
+                       edit_pane.set_position (pos);
                }
        }
 }
 
 void
-Editor::detach_tearoff (Gtk::Box* b, Gtk::Window* w)
+Editor::detach_tearoff (Box* b, Window* w)
 {
        if (tools_tearoff->torn_off() && 
            mouse_mode_tearoff->torn_off()) {
                top_hbox.remove (toolbar_frame);
        }
-       
-       ensure_float (*w);
 }
 
 void
-Editor::reattach_tearoff (Gtk::Box* b, Gtk::Window* w, int32_t n)
+Editor::reattach_tearoff (Box* b, Window* w, int32_t n)
 {
        if (toolbar_frame.get_parent() == 0) {
                top_hbox.pack_end (toolbar_frame);
@@ -3940,6 +3717,16 @@ Editor::set_show_measures (bool yn)
        }
 }
 
+void
+Editor::toggle_follow_playhead ()
+{
+       RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("ToggleFollowPlayhead"));
+       if (act) {
+               RefPtr<ToggleAction> tact = RefPtr<ToggleAction>::cast_dynamic(act);
+               set_follow_playhead (tact->get_active());
+       }
+}
+
 void
 Editor::set_follow_playhead (bool yn)
 {
@@ -4007,7 +3794,7 @@ void
 Editor::end_location_changed (Location* location)
 {
        ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::end_location_changed), location));
-       track_canvas_scroller.get_hadjustment()->set_upper (location->end() / frames_per_unit);
+       horizontal_adjustment.set_upper (location->end() / frames_per_unit);
 }
 
 int
@@ -4019,7 +3806,7 @@ Editor::playlist_deletion_dialog (Playlist* pl)
                                 "If deleted, audio files used by it alone by will cleaned."),
                               pl->name()));
 
-       dialog.set_position (Gtk::WIN_POS_CENTER);
+       dialog.set_position (WIN_POS_CENTER);
        dialog.get_vbox()->pack_start (label);
 
        dialog.add_button (_("Delete playlist"), RESPONSE_ACCEPT);
@@ -4098,8 +3885,87 @@ Editor::transport_punch_location()
        }
 }
 
-void 
-Editor::on_map ()
+bool
+Editor::control_layout_scroll (GdkEventScroll* ev)
 {
-       // XXX remove me
+       switch (ev->direction) {
+       case GDK_SCROLL_UP:
+               scroll_tracks_up_line ();
+               return true;
+               break;
+
+       case GDK_SCROLL_DOWN:
+               scroll_tracks_down_line ();
+               return true;
+               
+       default:
+               /* no left/right handling yet */
+               break;
+       }
+
+       return false;
 }
+
+void
+Editor::snapshot_display_selection_changed ()
+{
+       if (snapshot_display.get_selection()->count_selected_rows() > 0) {
+
+               TreeModel::iterator i = snapshot_display.get_selection()->get_selected();
+               
+               cerr << "snapshot selected\n";
+
+               Glib::ustring snap_name = (*i)[snapshot_display_columns.real_name];
+
+               cerr << "name is " << snap_name << endl;
+
+               if (snap_name.length() == 0) {
+                       return;
+               }
+               
+               if (session->snap_name() == snap_name) {
+                       return;
+               }
+               
+               ARDOUR_UI::instance()->load_session(session->path(), string (snap_name));
+       }
+}
+
+bool
+Editor::snapshot_display_button_press (GdkEventButton* ev)
+{
+        return false;
+}
+
+void
+Editor::redisplay_snapshots ()
+{
+       if (session == 0) {
+               return;
+       }
+
+       vector<string*>* states;
+
+       if ((states = session->possible_states()) == 0) {
+               return;
+       }
+
+       snapshot_display_model->clear ();
+
+       for (vector<string*>::iterator i = states->begin(); i != states->end(); ++i) {
+               string statename = *(*i);
+               TreeModel::Row row = *(snapshot_display_model->append());
+               row[snapshot_display_columns.visible_name] = statename;
+               row[snapshot_display_columns.real_name] = statename;
+       }
+
+       delete states;
+}
+
+void
+Editor::session_state_saved (string snap_name)
+{
+       ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::session_state_saved), snap_name));
+       redisplay_snapshots ();
+}
+