no more edit point clock (except SAE version, but who knows why or even if)
[ardour.git] / gtk2_ardour / editor_mouse.cc
index a7dd976266eb1a5984cb9fca5fc7a0373a87437b..490112d43010ceee2518190843d8d976a402b0e5 100644 (file)
@@ -1,3 +1,4 @@
+
 /*
     Copyright (C) 2000-2001 Paul Davis 
 
@@ -75,29 +76,25 @@ Editor::mouse_frame (nframes64_t& where, bool& in_track_canvas) const
        int x, y;
        double wx, wy;
        Gdk::ModifierType mask;
-       Glib::RefPtr<Gdk::Window> canvas_window = const_cast<Editor*>(this)->track_canvas.get_window();
+       Glib::RefPtr<Gdk::Window> canvas_window = const_cast<Editor*>(this)->track_canvas->get_window();
        Glib::RefPtr<const Gdk::Window> pointer_window;
+
+       if (!canvas_window) {
+               return false;
+       }
        
        pointer_window = canvas_window->get_pointer (x, y, mask);
 
-       if (pointer_window == track_canvas.get_bin_window()) {
-
-               track_canvas.window_to_world (x, y, wx, wy);
+       if (pointer_window == track_canvas->get_bin_window()) {
+               wx = x;
+               wy = y;
                in_track_canvas = true;
 
        } else {
                in_track_canvas = false;
-
-               if (pointer_window == time_canvas.get_bin_window()) {
-                       time_canvas.window_to_world (x, y, wx, wy);
-               } else {
                        return false;
-               }
        }
 
-       wx += horizontal_adjustment.get_value();
-       wy += vertical_adjustment.get_value();
-
        GdkEvent event;
        event.type = GDK_BUTTON_RELEASE;
        event.button.x = wx;
@@ -127,18 +124,24 @@ Editor::event_frame (GdkEvent* event, double* pcx, double* pcy) const
        case GDK_BUTTON_PRESS:
        case GDK_2BUTTON_PRESS:
        case GDK_3BUTTON_PRESS:
-               track_canvas.w2c(event->button.x, event->button.y, *pcx, *pcy);
+
+               *pcx = event->button.x;
+               *pcy = event->button.y;
+               _trackview_group->w2i(*pcx, *pcy);
                break;
        case GDK_MOTION_NOTIFY:
-               track_canvas.w2c(event->motion.x, event->motion.y, *pcx, *pcy);
+       
+               *pcx = event->motion.x;
+               *pcy = event->motion.y;
+               _trackview_group->w2i(*pcx, *pcy);
                break;
        case GDK_ENTER_NOTIFY:
        case GDK_LEAVE_NOTIFY:
-               track_canvas.w2c(event->crossing.x, event->crossing.y, *pcx, *pcy);
+               track_canvas->w2c(event->crossing.x, event->crossing.y, *pcx, *pcy);
                break;
        case GDK_KEY_PRESS:
        case GDK_KEY_RELEASE:
-               // track_canvas.w2c(event->key.x, event->key.y, *pcx, *pcy);
+               // track_canvas->w2c(event->key.x, event->key.y, *pcx, *pcy);
                break;
        default:
                warning << string_compose (_("Editor::event_frame() used on unhandled event type %1"), event->type) << endmsg;
@@ -202,6 +205,53 @@ Editor::mouse_mode_toggled (MouseMode m)
        }
 }      
 
+Gdk::Cursor*
+Editor::which_grabber_cursor ()
+{
+       switch (_edit_point) {
+       case EditAtMouse:
+               return grabber_edit_point_cursor;
+               break;
+       default:
+               break;
+       }
+       return grabber_cursor;
+}
+
+void
+Editor::set_canvas_cursor ()
+{
+       switch (mouse_mode) {
+       case MouseRange:
+               current_canvas_cursor = selector_cursor;
+               break;
+
+       case MouseObject:
+               current_canvas_cursor = which_grabber_cursor();
+               break;
+
+       case MouseGain:
+               current_canvas_cursor = cross_hair_cursor;
+               break;
+
+       case MouseZoom:
+               current_canvas_cursor = zoom_cursor;
+               break;
+
+       case MouseTimeFX:
+               current_canvas_cursor = time_fx_cursor; // just use playhead
+               break;
+
+       case MouseAudition:
+               current_canvas_cursor = speaker_cursor;
+               break;
+       }
+
+       if (is_drawable()) {
+               track_canvas->get_window()->set_cursor(*current_canvas_cursor);
+       }
+}
+
 void
 Editor::set_mouse_mode (MouseMode m, bool force)
 {
@@ -253,44 +303,32 @@ Editor::set_mouse_mode (MouseMode m, bool force)
        switch (mouse_mode) {
        case MouseRange:
                mouse_select_button.set_active (true);
-               current_canvas_cursor = selector_cursor;
                break;
 
        case MouseObject:
                mouse_move_button.set_active (true);
-               if (Profile->get_sae()) {
-                       current_canvas_cursor = timebar_cursor;
-               } else {
-                       current_canvas_cursor = grabber_cursor;
-               }
                break;
 
        case MouseGain:
                mouse_gain_button.set_active (true);
-               current_canvas_cursor = cross_hair_cursor;
                break;
 
        case MouseZoom:
                mouse_zoom_button.set_active (true);
-               current_canvas_cursor = zoom_cursor;
                break;
 
        case MouseTimeFX:
                mouse_timefx_button.set_active (true);
-               current_canvas_cursor = time_fx_cursor; // just use playhead
                break;
 
        case MouseAudition:
                mouse_audition_button.set_active (true);
-               current_canvas_cursor = speaker_cursor;
                break;
        }
 
        ignore_mouse_mode_toggle = false;
-
-       if (is_drawable()) {
-               track_canvas.get_window()->set_cursor(*current_canvas_cursor);
-       }
+       
+       set_canvas_cursor ();
 }
 
 void
@@ -298,8 +336,15 @@ Editor::step_mouse_mode (bool next)
 {
        switch (current_mouse_mode()) {
        case MouseObject:
-               if (next) set_mouse_mode (MouseRange);
-               else set_mouse_mode (MouseTimeFX);
+               if (next) {
+                       if (Profile->get_sae()) {
+                               set_mouse_mode (MouseZoom);
+                       } else {
+                               set_mouse_mode (MouseRange);
+                       }
+               } else {
+                       set_mouse_mode (MouseTimeFX);
+               }
                break;
 
        case MouseRange:
@@ -308,8 +353,19 @@ Editor::step_mouse_mode (bool next)
                break;
 
        case MouseZoom:
-               if (next) set_mouse_mode (MouseGain);
-               else set_mouse_mode (MouseRange);
+               if (next) {
+                       if (Profile->get_sae()) {
+                               set_mouse_mode (MouseTimeFX);
+                       } else {
+                               set_mouse_mode (MouseGain);
+                       }
+               } else {
+                       if (Profile->get_sae()) {
+                               set_mouse_mode (MouseObject);
+                       } else {
+                               set_mouse_mode (MouseRange);
+                       }
+               }
                break;
        
        case MouseGain:
@@ -318,8 +374,15 @@ Editor::step_mouse_mode (bool next)
                break;
        
        case MouseTimeFX:
-               if (next) set_mouse_mode (MouseAudition);
-               else set_mouse_mode (MouseGain);
+               if (next) {
+                       set_mouse_mode (MouseAudition);
+               } else {
+                       if (Profile->get_sae()) {
+                               set_mouse_mode (MouseZoom);
+                       } else {
+                               set_mouse_mode (MouseGain);
+                       }
+               }
                break;
 
        case MouseAudition:
@@ -332,10 +395,11 @@ Editor::step_mouse_mode (bool next)
 void
 Editor::button_selection (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_type)
 {
-       /* in object/audition/timefx mode, any button press sets
-          the selection if the object can be selected. this is a
-          bit of hack, because we want to avoid this if the
-          mouse operation is a region alignment.
+       /* in object/audition/timefx/gain-automation mode,
+          any button press sets the selection if the object
+          can be selected. this is a bit of hack, because
+          we want to avoid this if the mouse operation is a
+          region alignment.
 
           note: not dbl-click or triple-click
        */
@@ -343,9 +407,10 @@ Editor::button_selection (ArdourCanvas::Item* item, GdkEvent* event, ItemType it
        if (((mouse_mode != MouseObject) &&
             (mouse_mode != MouseAudition || item_type != RegionItem) &&
             (mouse_mode != MouseTimeFX || item_type != RegionItem) &&
+            (mouse_mode != MouseGain) &&
             (mouse_mode != MouseRange)) ||
 
-           (event->type != GDK_BUTTON_PRESS && event->type != GDK_BUTTON_RELEASE || event->button.button > 3)) {
+           ((event->type != GDK_BUTTON_PRESS && event->type != GDK_BUTTON_RELEASE) || event->button.button > 3)) {
                
                return;
        }
@@ -361,7 +426,7 @@ Editor::button_selection (ArdourCanvas::Item* item, GdkEvent* event, ItemType it
                        }
                }
        }
-           
+
        Selection::Operation op = Keyboard::selection_type (event->button.state);
        bool press = (event->type == GDK_BUTTON_PRESS);
 
@@ -428,14 +493,50 @@ const static double ZERO_GAIN_FRACTION = gain_to_slider_position(dB_to_coefficie
 bool
 Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_type)
 {
-       track_canvas.grab_focus();
+       Glib::RefPtr<Gdk::Window> canvas_window = const_cast<Editor*>(this)->track_canvas->get_window();
+
+       if (canvas_window) {
+               Glib::RefPtr<const Gdk::Window> pointer_window;
+               int x, y;
+               double wx, wy;
+               Gdk::ModifierType mask;
+
+               pointer_window = canvas_window->get_pointer (x, y, mask);
+               
+               if (pointer_window == track_canvas->get_bin_window()) {
+                       track_canvas->window_to_world (x, y, wx, wy);
+                       allow_vertical_scroll = true;
+               } else {
+                       allow_vertical_scroll = false;
+               }
+       }
+
+       track_canvas->grab_focus();
 
        if (session && session->actively_recording()) {
                return true;
        }
 
        button_selection (item, event, item_type);
-       
+
+       //ctrl-drag or right-click-drag on a "range" ruler should start a range drag
+       if (event->type == GDK_BUTTON_PRESS) {
+               if (event->button.button == 3 || ( (event->button.button == 1) && (Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier) ))) {
+                       if (item_type == TransportMarkerBarItem) {
+                               start_range_markerbar_op (item, event, CreateTransportMarker);
+                               return true;
+                       }
+                       if (item_type == RangeMarkerBarItem) {
+                               start_range_markerbar_op (item, event, CreateRangeMarker);
+                               return true;
+                       }
+                       if (item_type == CdMarkerBarItem) {
+                               start_range_markerbar_op (item, event, CreateCDMarker);
+                               return true;
+                       }
+               }
+       }
+
        if (drag_info.item == 0 &&
            (Keyboard::is_delete_event (&event->button) ||
             Keyboard::is_context_menu_event (&event->button) ||
@@ -489,24 +590,15 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
                                }
                                return true;
 
+                       case MarkerBarItem:
                        case TempoBarItem:
-                               return true;
-
                        case MeterBarItem:
-                               return true;
-                               
+                       case TransportMarkerBarItem:
                        case RangeMarkerBarItem:
-                               start_range_markerbar_op (item, event, CreateRangeMarker); 
-                               return true;
-                               break;
-
                        case CdMarkerBarItem:
-                               start_range_markerbar_op (item, event, CreateCDMarker); 
-                               return true;
-                               break;
-
-                       case TransportMarkerBarItem:
-                               start_range_markerbar_op (item, event, CreateTransportMarker); 
+                               if (!Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
+                                       start_cursor_grab_no_stop(&playhead_cursor->canvas_item, event);
+                               }
                                return true;
                                break;
 
@@ -581,8 +673,8 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
                                        
                                case RegionViewName:
                                        /* rename happens on edit clicks */
-                                               start_trim (clicked_regionview->get_name_highlight(), event);
-                                               return true;
+                                       start_trim (clicked_regionview->get_name_highlight(), event);
+                                       return true;
                                        break;
 
                                case GainAutomationControlPointItem:
@@ -646,7 +738,13 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
                case MouseGain:
                        switch (item_type) {
                        case RegionItem:
-                               // start_line_grab_from_regionview (item, event);
+                               /* start a grab so that if we finish after moving
+                                  we can tell what happened.
+                               */
+                               drag_info.item = item;
+                               drag_info.motion_callback = &Editor::region_gain_motion_callback;
+                               drag_info.finished_callback = 0;
+                               start_grab (event, current_canvas_cursor);
                                break;
 
                        case GainControlPointItem:
@@ -715,7 +813,7 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
                        scrub_reverse_distance = 0;
                        last_scrub_x = event->button.x;
                        scrubbing_direction = 0;
-                       track_canvas.get_window()->set_cursor (*transparent_cursor);
+                       track_canvas->get_window()->set_cursor (*transparent_cursor);
                        /* rest handled in motion & release */
                        break;
 
@@ -805,8 +903,9 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
 bool
 Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_type)
 {
-       nframes_t where = event_frame (event, 0, 0);
-
+       nframes64_t where = event_frame (event, 0, 0);
+       AutomationTimeAxisView* atv = 0;
+       
        /* no action if we're recording */
                                                
        if (session && session->actively_recording()) {
@@ -825,7 +924,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
        button_selection (item, event, item_type);
 
        /* edit events get handled here */
-       
+
        if (drag_info.item == 0 && Keyboard::is_edit_event (&event->button)) {
                switch (item_type) {
                case RegionItem:
@@ -894,7 +993,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        case CdMarkerBarItem:
                        case TempoBarItem:
                        case MeterBarItem:
-                               popup_ruler_menu (pixel_to_frame(event->button.x), item_type);
+                               popup_ruler_menu (where, item_type);
                                break;
 
                        case MarkerItem:
@@ -994,48 +1093,56 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        return true;
 
                case MarkerBarItem:
-                       if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
-                               snap_to (where, 0, true);
+                       if (!_dragging_playhead) {
+                               if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
+                                       snap_to (where, 0, true);
+                               }
+                               mouse_add_new_marker (where);
                        }
-                       mouse_add_new_marker (where);
                        return true;
 
                case CdMarkerBarItem:
-                       // if we get here then a dragged range wasn't done
-                       if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
-                               snap_to (where, 0, true);
+                       if (!_dragging_playhead) {
+                               // if we get here then a dragged range wasn't done
+                               if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
+                                       snap_to (where, 0, true);
+                               }
+                               mouse_add_new_marker (where, true);
                        }
-                       mouse_add_new_marker (where, true);
                        return true;
 
                case TempoBarItem:
-                       if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
-                               snap_to (where);
+                       if (!_dragging_playhead) {
+                               if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
+                                       snap_to (where);
+                               }
+                               mouse_add_new_tempo_event (where);
                        }
-                       mouse_add_new_tempo_event (where);
                        return true;
                        
                case MeterBarItem:
-                       mouse_add_new_meter_event (pixel_to_frame (event->button.x));
+                       if (!_dragging_playhead) {
+                               mouse_add_new_meter_event (pixel_to_frame (event->button.x));
+                       } 
                        return true;
                        break;
 
                default:
                        break;
                }
-
+               
                switch (mouse_mode) {
                case MouseObject:
                        switch (item_type) {
                        case AutomationTrackItem:
-                               dynamic_cast<AutomationTimeAxisView*>(clicked_trackview)->add_automation_event 
-                                       (item,
-                                        event,
-                                        where,
-                                        event->button.y);
+                               atv = dynamic_cast<AutomationTimeAxisView*>(clicked_trackview);
+                               if (atv) {
+                                       atv->add_automation_event (item, event, where, event->button.y);
+                               }
                                return true;
+                               
                                break;
-
+                               
                        default:
                                break;
                        }
@@ -1050,7 +1157,13 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
                        switch (item_type) {
                        case RegionItem:
-                               dynamic_cast<AudioRegionView*>(clicked_regionview)->add_gain_point_event (item, event);
+                               /* check that we didn't drag before releasing, since
+                                  its really annoying to create new control
+                                  points when doing this.
+                               */
+                               if (drag_info.first_move) { 
+                                       dynamic_cast<AudioRegionView*>(clicked_regionview)->add_gain_point_event (item, event);
+                               }
                                return true;
                                break;
                                
@@ -1066,7 +1179,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        
                case MouseAudition:
                        _scrubbing = false;
-                       track_canvas.get_window()->set_cursor (*current_canvas_cursor);
+                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
                        if (scrubbing_direction == 0) {
                                /* no drag, just a click */
                                switch (item_type) {
@@ -1156,13 +1269,13 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                        at_x = cp->get_x();
                        at_y = cp->get_y ();
                        cp->item->i2w (at_x, at_y);
-                       at_x += 20.0;
-                       at_y += 20.0;
+                       at_x += 10.0;
+                       at_y += 10.0;
 
                        fraction = 1.0 - (cp->get_y() / cp->line.height());
 
                        if (is_drawable() && !_scrubbing) {
-                               track_canvas.get_window()->set_cursor (*fader_cursor);
+                               track_canvas->get_window()->set_cursor (*fader_cursor);
                        }
 
                        last_item_entered_n++;
@@ -1184,8 +1297,8 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                        at_x = cp->get_x();
                        at_y = cp->get_y ();
                        cp->item->i2w (at_x, at_y);
-                       at_x += 20.0;
-                       at_y += 20.0;
+                       at_x += 10.0;
+                       at_y += 10.0;
 
                        fraction = 1.0 - (cp->get_y() / cp->line.height());
 
@@ -1193,7 +1306,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                        show_verbose_canvas_cursor ();
 
                        if (is_drawable()) {
-                               track_canvas.get_window()->set_cursor (*fader_cursor);
+                               track_canvas->get_window()->set_cursor (*fader_cursor);
                        }
                }
                break;
@@ -1204,7 +1317,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                        if (line)
                                line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_EnteredGainLine.get();
                        if (is_drawable()) {
-                               track_canvas.get_window()->set_cursor (*fader_cursor);
+                               track_canvas->get_window()->set_cursor (*fader_cursor);
                        }
                }
                break;
@@ -1219,14 +1332,14 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                                        line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_EnteredAutomationLine.get();
                        }
                        if (is_drawable()) {
-                               track_canvas.get_window()->set_cursor (*fader_cursor);
+                               track_canvas->get_window()->set_cursor (*fader_cursor);
                        }
                }
                break;
                
        case RegionViewNameHighlight:
                if (is_drawable() && mouse_mode == MouseObject) {
-                       track_canvas.get_window()->set_cursor (*trimmer_cursor);
+                       track_canvas->get_window()->set_cursor (*trimmer_cursor);
                }
                break;
 
@@ -1240,13 +1353,20 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        /* </CMT Additions> */
 
                if (is_drawable()) {
-                       track_canvas.get_window()->set_cursor (*trimmer_cursor);
+                       track_canvas->get_window()->set_cursor (*trimmer_cursor);
                }
                break;
 
        case PlayheadCursorItem:
                if (is_drawable()) {
-                       track_canvas.get_window()->set_cursor (*grabber_cursor);
+                       switch (_edit_point) {
+                       case EditAtMouse:
+                               track_canvas->get_window()->set_cursor (*grabber_edit_point_cursor);
+                               break;
+                       default:
+                               track_canvas->get_window()->set_cursor (*grabber_cursor);
+                               break;
+                       }
                }
                break;
 
@@ -1256,7 +1376,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
 
                if (!reinterpret_cast<RegionView *> (item->get_data ("regionview"))->name_active()) {
                        if (mouse_mode == MouseObject && is_drawable()) {
-                               track_canvas.get_window()->set_cursor (*trimmer_cursor);
+                               track_canvas->get_window()->set_cursor (*trimmer_cursor);
                        }
                } 
                break;
@@ -1277,7 +1397,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                                break;
                        }
 
-                       track_canvas.get_window()->set_cursor (*cursor);
+                       track_canvas->get_window()->set_cursor (*cursor);
 
                        AutomationTimeAxisView* atv;
                        if ((atv = static_cast<AutomationTimeAxisView*>(item->get_data ("trackview"))) != 0) {
@@ -1294,7 +1414,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case MeterBarItem:
        case TempoBarItem:
                if (is_drawable()) {
-                       time_canvas.get_window()->set_cursor (*timebar_cursor);
+                       track_canvas->get_window()->set_cursor (*timebar_cursor);
                }
                break;
 
@@ -1308,7 +1428,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case MeterMarkerItem:
        case TempoMarkerItem:
                if (is_drawable()) {
-                       time_canvas.get_window()->set_cursor (*timebar_cursor);
+                       track_canvas->get_window()->set_cursor (*timebar_cursor);
                }
                break;
        case FadeInHandleItem:
@@ -1377,7 +1497,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                }
                
                if (is_drawable()) {
-                       track_canvas.get_window()->set_cursor (*current_canvas_cursor);
+                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
                }
 
                hide_verbose_canvas_cursor ();
@@ -1394,7 +1514,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case MarkerViewHandleEndItem:
        /* </CMT Additions> */
                if (is_drawable()) {
-                       track_canvas.get_window()->set_cursor (*current_canvas_cursor);
+                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
                }
                break;
 
@@ -1409,7 +1529,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                                line->property_fill_color_rgba() = al->get_line_color();
                }
                if (is_drawable()) {
-                       track_canvas.get_window()->set_cursor (*current_canvas_cursor);
+                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
                }
                break;
 
@@ -1417,7 +1537,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                /* see enter_handler() for notes */
                if (!reinterpret_cast<RegionView *> (item->get_data ("regionview"))->name_active()) {
                        if (is_drawable() && mouse_mode == MouseObject) {
-                               track_canvas.get_window()->set_cursor (*current_canvas_cursor);
+                               track_canvas->get_window()->set_cursor (*current_canvas_cursor);
                        }
                }
                break;
@@ -1429,7 +1549,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case TempoBarItem:
        case MarkerBarItem:
                if (is_drawable()) {
-                       time_canvas.get_window()->set_cursor (*timebar_cursor);
+                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
                }
                break;
                
@@ -1446,7 +1566,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case TempoMarkerItem:
                
                if (is_drawable()) {
-                       time_canvas.get_window()->set_cursor (*timebar_cursor);
+                       track_canvas->get_window()->set_cursor (*timebar_cursor);
                }
 
                break;
@@ -1465,7 +1585,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
 
        case AutomationTrackItem:
                if (is_drawable()) {
-                       track_canvas.get_window()->set_cursor (*current_canvas_cursor);
+                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
                        clear_entered_track = true;
                        Glib::signal_idle().connect (mem_fun(*this, &Editor::left_automation_track));
                }
@@ -1488,6 +1608,85 @@ Editor::left_automation_track ()
        return false;
 }
 
+void
+Editor::scrub ()
+{
+       double delta;
+       
+       if (scrubbing_direction == 0) {
+               /* first move */
+               session->request_locate (drag_info.current_pointer_frame, false);
+               session->request_transport_speed (0.1);
+               scrubbing_direction = 1;
+               
+       } else {
+               
+               if (last_scrub_x > drag_info.current_pointer_x) {
+                       
+                       /* pointer moved to the left */
+                       
+                       if (scrubbing_direction > 0) {
+                               
+                               /* we reversed direction to go backwards */
+                               
+                               scrub_reversals++;
+                               scrub_reverse_distance += (int) (last_scrub_x - drag_info.current_pointer_x);
+                               
+                       } else {
+                               
+                               /* still moving to the left (backwards) */
+                               
+                               scrub_reversals = 0;
+                               scrub_reverse_distance = 0;
+                               
+                               delta = 0.01 * (last_scrub_x - drag_info.current_pointer_x);
+                               session->request_transport_speed (session->transport_speed() - delta);
+                       }
+                       
+               } else {
+                       /* pointer moved to the right */
+                       
+                       if (scrubbing_direction < 0) {
+                               /* we reversed direction to go forward */
+                               
+                               scrub_reversals++;
+                               scrub_reverse_distance += (int) (drag_info.current_pointer_x - last_scrub_x);
+                               
+                       } else {
+                               /* still moving to the right */
+                               
+                               scrub_reversals = 0;
+                               scrub_reverse_distance = 0;
+                               
+                               delta = 0.01 * (drag_info.current_pointer_x - last_scrub_x);
+                               session->request_transport_speed (session->transport_speed() + delta);
+                       }
+               }
+               
+               /* if there have been more than 2 opposite motion moves detected, or one that moves
+                  back more than 10 pixels, reverse direction
+               */
+               
+               if (scrub_reversals >= 2 || scrub_reverse_distance > 10) {
+                       
+                       if (scrubbing_direction > 0) {
+                               /* was forwards, go backwards */
+                               session->request_transport_speed (-0.1);
+                               scrubbing_direction = -1;
+                       } else {
+                               /* was backwards, go forwards */
+                               session->request_transport_speed (0.1);
+                               scrubbing_direction = 1;
+                       }
+                       
+                       scrub_reverse_distance = 0;
+                       scrub_reversals = 0;
+               }
+       }
+       
+       last_scrub_x = drag_info.current_pointer_x;
+}
+
 bool
 Editor::motion_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_type, bool from_autoscroll)
 {
@@ -1502,9 +1701,9 @@ Editor::motion_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item
                   where DISPLAY = :0.0, and given the cost of what the motion
                   event might do, its a good tradeoff.  
                */
-               
-               track_canvas.get_pointer (x, y);
-       }
+
+               track_canvas->get_pointer (x, y);
+       } 
 
        if (current_stepping_trackview) {
                /* don't keep the persistent stepped trackview if the mouse moves */
@@ -1523,85 +1722,13 @@ Editor::motion_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item
        drag_info.current_pointer_frame = event_frame (event, &drag_info.current_pointer_x,
                                                       &drag_info.current_pointer_y);
 
+       
        switch (mouse_mode) {
        case MouseAudition:
                if (_scrubbing) {
-
-                       double delta;
-
-                       if (scrubbing_direction == 0) {
-                               /* first move */
-                               session->request_locate (drag_info.current_pointer_frame, false);
-                               session->request_transport_speed (0.1);
-                               scrubbing_direction = 1;
-
-                       } else {
-                               
-                               if (last_scrub_x > drag_info.current_pointer_x) {
-
-                                       /* pointer moved to the left */
-                                       
-                                       if (scrubbing_direction > 0) {
-
-                                               /* we reversed direction to go backwards */
-
-                                               scrub_reversals++;
-                                               scrub_reverse_distance += (int) (last_scrub_x - drag_info.current_pointer_x);
-
-                                       } else {
-
-                                               /* still moving to the left (backwards) */
-                                               
-                                               scrub_reversals = 0;
-                                               scrub_reverse_distance = 0;
-
-                                               delta = 0.01 * (last_scrub_x - drag_info.current_pointer_x);
-                                               session->request_transport_speed (session->transport_speed() - delta);
-                                       }
-                                       
-                               } else {
-                                       /* pointer moved to the right */
-
-                                       if (scrubbing_direction < 0) {
-                                               /* we reversed direction to go forward */
-
-                                               scrub_reversals++;
-                                               scrub_reverse_distance += (int) (drag_info.current_pointer_x - last_scrub_x);
-
-                                       } else {
-                                               /* still moving to the right */
-
-                                               scrub_reversals = 0;
-                                               scrub_reverse_distance = 0;
-                                               
-                                               delta = 0.01 * (drag_info.current_pointer_x - last_scrub_x);
-                                               session->request_transport_speed (session->transport_speed() + delta);
-                                       }
-                               }
-
-                               /* if there have been more than 2 opposite motion moves detected, or one that moves
-                                  back more than 10 pixels, reverse direction
-                               */
-
-                               if (scrub_reversals >= 2 || scrub_reverse_distance > 10) {
-
-                                       if (scrubbing_direction > 0) {
-                                               /* was forwards, go backwards */
-                                               session->request_transport_speed (-0.1);
-                                               scrubbing_direction = -1;
-                                       } else {
-                                               /* was backwards, go forwards */
-                                               session->request_transport_speed (0.1);
-                                               scrubbing_direction = 1;
-                                       }
-                                       
-                                       scrub_reverse_distance = 0;
-                                       scrub_reversals = 0;
-                               }
-                       }
-
-                       last_scrub_x = drag_info.current_pointer_x;
+                       scrub ();
                }
+               break;
 
        default:
                break;
@@ -1632,6 +1759,12 @@ Editor::motion_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item
        switch (item_type) {
        case PlayheadCursorItem:
        case MarkerItem:
+       case MarkerBarItem:
+       case TempoBarItem:
+       case MeterBarItem:
+       case RangeMarkerBarItem:
+       case TransportMarkerBarItem:
+       case CdMarkerBarItem:
        case GainControlPointItem:
        case RedirectAutomationControlPointItem:
        case GainAutomationControlPointItem:
@@ -1655,20 +1788,32 @@ Editor::motion_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item
        case MarkerViewHandleEndItem:
        /* </CMT Additions> */
          if (drag_info.item && (event->motion.state & Gdk::BUTTON1_MASK ||
+                                (event->motion.state & Gdk::BUTTON3_MASK) ||
                                 (event->motion.state & Gdk::BUTTON2_MASK))) {
                  if (!from_autoscroll) {
-                         maybe_autoscroll (event);
+                         maybe_autoscroll_horizontally (&event->motion);
+                 }
+                 if (drag_info.motion_callback) {
+                         (this->*(drag_info.motion_callback)) (item, event);
                  }
-                 (this->*(drag_info.motion_callback)) (item, event);
                  goto handled;
          }
          goto not_handled;
-         
+         break;
        default:
                break;
        }
 
        switch (mouse_mode) {
+       case MouseGain:
+               if (item_type == RegionItem) {
+                       if (drag_info.item && drag_info.motion_callback) {
+                               (this->*(drag_info.motion_callback)) (item, event);
+                       }
+                       goto handled;
+               }
+               break;
+
        case MouseObject:
        case MouseRange:
        case MouseZoom:
@@ -1676,9 +1821,11 @@ Editor::motion_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item
                if (drag_info.item && (event->motion.state & GDK_BUTTON1_MASK ||
                                       (event->motion.state & GDK_BUTTON2_MASK))) {
                        if (!from_autoscroll) {
-                               maybe_autoscroll (event);
+                               maybe_autoscroll (&event->motion);
+                       }
+                       if (drag_info.motion_callback) {
+                               (this->*(drag_info.motion_callback)) (item, event);
                        }
-                       (this->*(drag_info.motion_callback)) (item, event);
                        goto handled;
                }
                goto not_handled;
@@ -1697,6 +1844,45 @@ Editor::motion_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item
        return false;
 }
 
+void
+Editor::break_drag ()
+{
+       stop_canvas_autoscroll ();
+       hide_verbose_canvas_cursor ();
+
+       if (drag_info.item) {
+               drag_info.item->ungrab (0);
+
+               /* put it back where it came from */
+
+               double cxw, cyw;
+               cxw = 0;
+               cyw = 0;
+               drag_info.item->i2w (cxw, cyw);
+               drag_info.item->move (drag_info.original_x - cxw, drag_info.original_y - cyw);
+       }
+
+       finalize_drag ();
+}
+
+void
+Editor::finalize_drag ()
+{
+       drag_info.item = 0;
+       drag_info.copy = false;
+       drag_info.motion_callback = 0;
+       drag_info.finished_callback = 0;
+       drag_info.dest_trackview = 0;
+       drag_info.source_trackview = 0;
+       drag_info.last_frame_position = 0;
+       drag_info.grab_frame = 0;
+       drag_info.last_pointer_frame = 0;
+       drag_info.current_pointer_frame = 0;
+       drag_info.brushing = false;
+       range_marker_drag_rect->hide();
+       drag_info.clear_copied_locations ();
+}
+
 void
 Editor::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
 {
@@ -1707,12 +1893,12 @@ Editor::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
        }
 
        if (cursor == 0) {
-               cursor = grabber_cursor;
+               cursor = which_grabber_cursor ();
        }
 
         // if dragging with button2, the motion is x constrained, with Alt-button2 it is y constrained
 
-       if (event->button.button == 2) {
+       if (Keyboard::is_button2_event (&event->button)) {
                if (Keyboard::modifier_state_equals (event->button.state, Keyboard::SecondaryModifier)) {
                        drag_info.y_constrained = true;
                        drag_info.x_constrained = false;
@@ -1739,7 +1925,11 @@ Editor::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
        drag_info.want_move_threshold = false;
        drag_info.pointer_frame_offset = 0;
        drag_info.brushing = false;
-       drag_info.copied_location = 0;
+       drag_info.clear_copied_locations ();
+
+       drag_info.original_x = 0;
+       drag_info.original_y = 0;
+       drag_info.item->i2w (drag_info.original_x, drag_info.original_y);
 
        drag_info.item->grab (Gdk::POINTER_MOTION_MASK|Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK,
                              *cursor,
@@ -1770,7 +1960,7 @@ Editor::swap_grab (ArdourCanvas::Item* new_item, Gdk::Cursor* cursor, uint32_t t
        drag_info.item = new_item;
 
        if (cursor == 0) {
-               cursor = grabber_cursor;
+               cursor = which_grabber_cursor ();
        }
 
        drag_info.item->grab (Gdk::POINTER_MOTION_MASK|Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK, *cursor, time);
@@ -1787,9 +1977,9 @@ Editor::end_grab (ArdourCanvas::Item* item, GdkEvent* event)
                return false;
        }
        
-       drag_info.item->ungrab (event->button.time);
+       drag_info.item->ungrab (event ? event->button.time : 0);
 
-       if (drag_info.finished_callback) {
+       if (drag_info.finished_callback && event) {
                drag_info.last_pointer_x = drag_info.current_pointer_x;
                drag_info.last_pointer_y = drag_info.current_pointer_y;
                (this->*(drag_info.finished_callback)) (item, event);
@@ -1799,25 +1989,19 @@ Editor::end_grab (ArdourCanvas::Item* item, GdkEvent* event)
 
        hide_verbose_canvas_cursor();
 
-       drag_info.item = 0;
-       drag_info.copy = false;
-       drag_info.motion_callback = 0;
-       drag_info.finished_callback = 0;
-       drag_info.last_trackview = 0;
-       drag_info.last_frame_position = 0;
-       drag_info.grab_frame = 0;
-       drag_info.last_pointer_frame = 0;
-       drag_info.current_pointer_frame = 0;
-       drag_info.brushing = false;
-
-       if (drag_info.copied_location) {
-               delete drag_info.copied_location;
-               drag_info.copied_location = 0;
-       }
+       finalize_drag ();
 
        return did_drag;
 }
 
+void
+Editor::region_gain_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
+{
+       if (drag_info.first_move && drag_info.move_threshold_passed) {
+               drag_info.first_move = false;
+       }
+}
+
 void
 Editor::start_fade_in_grab (ArdourCanvas::Item* item, GdkEvent* event)
 {
@@ -1834,15 +2018,15 @@ Editor::start_fade_in_grab (ArdourCanvas::Item* item, GdkEvent* event)
 
        AudioRegionView* arv = static_cast<AudioRegionView*>(drag_info.data);
 
-       drag_info.pointer_frame_offset = drag_info.grab_frame - ((nframes_t) arv->audio_region()->fade_in().back()->when + arv->region()->position());  
+       drag_info.pointer_frame_offset = drag_info.grab_frame - ((nframes64_t) arv->audio_region()->fade_in().back()->when + arv->region()->position());        
 }
 
 void
 Editor::fade_in_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
        AudioRegionView* arv = static_cast<AudioRegionView*>(drag_info.data);
-       nframes_t pos;
-       nframes_t fade_length;
+       nframes64_t pos;
+       nframes64_t fade_length;
 
        if (drag_info.current_pointer_frame > drag_info.pointer_frame_offset) {
                pos = drag_info.current_pointer_frame - drag_info.pointer_frame_offset;
@@ -1884,8 +2068,8 @@ void
 Editor::fade_in_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
        AudioRegionView* arv = static_cast<AudioRegionView*>(drag_info.data);
-       nframes_t pos;
-       nframes_t fade_length;
+       nframes64_t pos;
+       nframes64_t fade_length;
 
        if (drag_info.first_move) return;
 
@@ -1917,6 +2101,7 @@ Editor::fade_in_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* even
                XMLNode &before = alist.get_state();
 
                tmp->audio_region()->set_fade_in_length (fade_length);
+               tmp->audio_region()->set_fade_in_active (true);
                
                XMLNode &after = alist.get_state();
                session->add_command(new MementoCommand<AutomationList>(alist, &before, &after));
@@ -1941,15 +2126,15 @@ Editor::start_fade_out_grab (ArdourCanvas::Item* item, GdkEvent* event)
 
        AudioRegionView* arv = static_cast<AudioRegionView*>(drag_info.data);
 
-       drag_info.pointer_frame_offset = drag_info.grab_frame - (arv->region()->length() - (nframes_t) arv->audio_region()->fade_out().back()->when + arv->region()->position());       
+       drag_info.pointer_frame_offset = drag_info.grab_frame - (arv->region()->length() - (nframes64_t) arv->audio_region()->fade_out().back()->when + arv->region()->position());     
 }
 
 void
 Editor::fade_out_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
        AudioRegionView* arv = static_cast<AudioRegionView*>(drag_info.data);
-       nframes_t pos;
-       nframes_t fade_length;
+       nframes64_t pos;
+       nframes64_t fade_length;
 
        if (drag_info.current_pointer_frame > drag_info.pointer_frame_offset) {
                pos = drag_info.current_pointer_frame - drag_info.pointer_frame_offset;
@@ -1995,8 +2180,8 @@ Editor::fade_out_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* eve
        if (drag_info.first_move) return;
 
        AudioRegionView* arv = static_cast<AudioRegionView*>(drag_info.data);
-       nframes_t pos;
-       nframes_t fade_length;
+       nframes64_t pos;
+       nframes64_t fade_length;
 
        if (drag_info.current_pointer_frame > drag_info.pointer_frame_offset) {
                pos = drag_info.current_pointer_frame - drag_info.pointer_frame_offset;
@@ -2033,6 +2218,7 @@ Editor::fade_out_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* eve
                XMLNode &before = alist.get_state();
                
                tmp->audio_region()->set_fade_out_length (fade_length);
+               tmp->audio_region()->set_fade_out_active (true);
 
                XMLNode &after = alist.get_state();
                session->add_command(new MementoCommand<AutomationList>(alist, &before, &after));
@@ -2074,11 +2260,44 @@ Editor::start_cursor_grab (ArdourCanvas::Item* item, GdkEvent* event)
        show_verbose_time_cursor (cursor->current_frame, 10);
 }
 
+void
+Editor::start_cursor_grab_no_stop (ArdourCanvas::Item* item, GdkEvent* event)
+{
+       drag_info.item = item;
+       drag_info.motion_callback = &Editor::cursor_drag_motion_callback;
+       drag_info.finished_callback = &Editor::cursor_drag_finished_ensure_locate_callback;
+
+       start_grab (event);
+
+       if ((drag_info.data = (item->get_data ("cursor"))) == 0) {
+               fatal << _("programming error: cursor canvas item has no cursor data pointer!") << endmsg;
+               /*NOTREACHED*/
+       }
+
+       Cursor* cursor = (Cursor *) drag_info.data;
+       nframes64_t where = event_frame (event, 0, 0);
+
+       snap_to(where);
+       playhead_cursor->set_position (where);
+
+       if (cursor == playhead_cursor) {
+               _dragging_playhead = true;
+
+               if (session && session->is_auditioning()) {
+                       session->cancel_audition ();
+               }
+       }
+
+       drag_info.pointer_frame_offset = drag_info.grab_frame - cursor->current_frame;  
+       
+       show_verbose_time_cursor (cursor->current_frame, 10);
+}
+
 void
 Editor::cursor_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
        Cursor* cursor = (Cursor *) drag_info.data;
-       nframes_t adjusted_frame;
+       nframes64_t adjusted_frame;
        
        if (drag_info.current_pointer_frame > drag_info.pointer_frame_offset) {
                adjusted_frame = drag_info.current_pointer_frame - drag_info.pointer_frame_offset;
@@ -2096,11 +2315,14 @@ Editor::cursor_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
        if (adjusted_frame == drag_info.last_pointer_frame) return;
 
        cursor->set_position (adjusted_frame);
-       
-       UpdateAllTransportClocks (cursor->current_frame);
 
        show_verbose_time_cursor (cursor->current_frame, 10);
 
+#ifdef GTKOSX
+       track_canvas->update_now ();
+#endif
+       UpdateAllTransportClocks (cursor->current_frame);
+
        drag_info.last_pointer_frame = adjusted_frame;
        drag_info.first_move = false;
 }
@@ -2108,12 +2330,28 @@ Editor::cursor_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 void
 Editor::cursor_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
-       if (drag_info.first_move) return;
+       _dragging_playhead = false;
+
+       if (drag_info.first_move) {
+               return;
+       }
        
        cursor_drag_motion_callback (item, event);
+       
+       if (item == &playhead_cursor->canvas_item) {
+               if (session) {
+                       session->request_locate (playhead_cursor->current_frame, drag_info.was_rolling);
+               }
+       } 
+}
 
+void
+Editor::cursor_drag_finished_ensure_locate_callback (ArdourCanvas::Item* item, GdkEvent* event)
+{
        _dragging_playhead = false;
        
+       cursor_drag_motion_callback (item, event);
+       
        if (item == &playhead_cursor->canvas_item) {
                if (session) {
                        session->request_locate (playhead_cursor->current_frame, drag_info.was_rolling);
@@ -2131,8 +2369,7 @@ Editor::update_marker_drag_item (Location *location)
                marker_drag_line_points.front().set_x(x1);
                marker_drag_line_points.back().set_x(x1);
                marker_drag_line->property_points() = marker_drag_line_points;
-       }
-       else {
+       } else {
                range_marker_drag_rect->property_x1() = x1;
                range_marker_drag_rect->property_x2() = x2;
        }
@@ -2161,7 +2398,6 @@ Editor::start_marker_grab (ArdourCanvas::Item* item, GdkEvent* event)
 
        _dragging_edit_point = true;
 
-       drag_info.copied_location = new Location (*location);
        drag_info.pointer_frame_offset = drag_info.grab_frame - (is_start ? location->start() : location->end());       
 
        update_marker_drag_item (location);
@@ -2171,7 +2407,7 @@ Editor::start_marker_grab (ArdourCanvas::Item* item, GdkEvent* event)
                // marker_drag_line->raise_to_top();
        } else {
                range_marker_drag_rect->show();
-               range_marker_drag_rect->raise_to_top();
+               //range_marker_drag_rect->raise_to_top();
        }
 
        if (is_start) {
@@ -2187,35 +2423,74 @@ Editor::start_marker_grab (ArdourCanvas::Item* item, GdkEvent* event)
                selection->toggle (marker);
                break;
        case Selection::Set:
-               selection->set (marker);
+               if (!selection->selected (marker)) {
+                       selection->set (marker);
+               }
                break;
        case Selection::Extend:
-               selection->add (marker);
+       {
+               Locations::LocationList ll;
+               list<Marker*> to_add;
+               nframes64_t s, e;
+               selection->markers.range (s, e);
+               s = min (marker->position(), s);
+               e = max (marker->position(), e);
+               s = min (s, e);
+               e = max (s, e);
+               if (e < max_frames) {
+                       ++e;
+               }
+               session->locations()->find_all_between (s, e, ll, Location::Flags (0));
+               for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
+                       LocationMarkers* lm = find_location_markers (*i);
+                       if (lm) {
+                               if (lm->start) {
+                                       to_add.push_back (lm->start);
+                               }
+                               if (lm->end) {
+                                       to_add.push_back (lm->end);
+                               }
+                       }
+               }
+               if (!to_add.empty()) {
+                       selection->add (to_add);
+               }
                break;
+       }
        case Selection::Add:
                selection->add (marker);
                break;
        }
+
+       /* set up copies for us to manipulate during the drag */
+
+       drag_info.clear_copied_locations ();
+
+       for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
+               Location  *l = find_location_from_marker (*i, is_start);
+               drag_info.copied_locations.push_back (new Location (*l));
+       }
 }
 
 void
 Editor::marker_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
-       nframes_t f_delta;      
-       Marker* marker = (Marker *) drag_info.data;
-       Location  *real_location;
-       Location  *copy_location;
+       nframes64_t f_delta = 0;
+       nframes64_t newframe;
        bool is_start;
        bool move_both = false;
+       Marker* dragged_marker = (Marker*) drag_info.data;
+       Marker* marker;
+       Location  *real_location;
+       Location  *copy_location;
 
-       nframes_t newframe;
        if (drag_info.pointer_frame_offset <= drag_info.current_pointer_frame) {
                newframe = drag_info.current_pointer_frame - drag_info.pointer_frame_offset;
        } else {
                newframe = 0;
        }
 
-       nframes_t next = newframe;
+       nframes64_t next = newframe;
 
        if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
                snap_to (newframe, 0, true);
@@ -2225,102 +2500,198 @@ Editor::marker_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                return;
        }
 
-       /* call this to find out if its the start or end */
-       
-       if ((real_location = find_location_from_marker (marker, is_start)) == 0) {
-               return;
+       if (Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
+               move_both = true;
+       }
+
+       MarkerSelection::iterator i;
+       list<Location*>::iterator x;
+
+       /* find the marker we're dragging, and compute the delta */
+
+       for (i = selection->markers.begin(), x = drag_info.copied_locations.begin(); 
+            x != drag_info.copied_locations.end() && i != selection->markers.end(); 
+            ++i, ++x) {
+
+               copy_location = *x;
+               marker = *i;
+
+               if (marker == dragged_marker) {
+
+                       if ((real_location = find_location_from_marker (marker, is_start)) == 0) {
+                               /* que pasa ?? */
+                               return;
+                       }
+
+                       if (real_location->is_mark()) {
+                               f_delta = newframe - copy_location->start();
+                       } else {
+
+
+                               switch (marker->type()) {
+                               case Marker::Start:
+                               case Marker::LoopStart:
+                               case Marker::PunchIn:
+                                       f_delta = newframe - copy_location->start();
+                                       break;
+
+                               case Marker::End:
+                               case Marker::LoopEnd:
+                               case Marker::PunchOut:
+                                       f_delta = newframe - copy_location->end();
+                                       break;
+                               default:
+                                       /* what kind of marker is this ? */
+                                       return;
+                               }
+                       }
+                       break;
+               }
        }
 
-       if (real_location->locked()) {
+       if (i == selection->markers.end()) {
+               /* hmm, impossible - we didn't find the dragged marker */
                return;
        }
 
-       /* use the copy that we're "dragging" around */
-       
-       copy_location = drag_info.copied_location;
+       /* now move them all */
 
-       f_delta = copy_location->end() - copy_location->start();
-       
-       if (Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
-               move_both = true;
-       }
+       for (i = selection->markers.begin(), x = drag_info.copied_locations.begin(); 
+            x != drag_info.copied_locations.end() && i != selection->markers.end(); 
+            ++i, ++x) {
 
-       if (copy_location->is_mark()) {
-               /* just move it */
+               copy_location = *x;
+               marker = *i;
 
-               copy_location->set_start (newframe);
+               /* call this to find out if its the start or end */
+               
+               if ((real_location = find_location_from_marker (marker, is_start)) == 0) {
+                       continue;
+               }
+               
+               if (real_location->locked()) {
+                       continue;
+               }
 
-       } else {
+               if (copy_location->is_mark()) {
 
-               if (is_start) { // start-of-range marker
+                       /* just move it */
                        
-                       if (move_both) {
-                               copy_location->set_start (newframe);
-                               copy_location->set_end (newframe + f_delta);
-                       } else  if (newframe < copy_location->end()) {
-                               copy_location->set_start (newframe);
-                       } else { 
-                               snap_to (next, 1, true);
-                               copy_location->set_end (next);
-                               copy_location->set_start (newframe);
-                       }
+                       copy_location->set_start (copy_location->start() + f_delta);
+
+               } else {
                        
-               } else { // end marker
+                       nframes64_t new_start = copy_location->start() + f_delta;
+                       nframes64_t new_end = copy_location->end() + f_delta;
                        
-                       if (move_both) {
-                               copy_location->set_end (newframe);
-                               copy_location->set_start (newframe - f_delta);
-                       } else if (newframe > copy_location->start()) {
-                               copy_location->set_end (newframe);
+                       if (is_start) { // start-of-range marker
                                
-                       } else if (newframe > 0) {
-                               snap_to (next, -1, true);
-                               copy_location->set_start (next);
-                               copy_location->set_end (newframe);
+                               if (move_both) {
+                                       copy_location->set_start (new_start);
+                                       copy_location->set_end (new_end);
+                               } else  if (new_start < copy_location->end()) {
+                                       copy_location->set_start (new_start);
+                               } else { 
+                                       snap_to (next, 1, true);
+                                       copy_location->set_end (next);
+                                       copy_location->set_start (newframe);
+                               }
+                               
+                       } else { // end marker
+                               
+                               if (move_both) {
+                                       copy_location->set_end (new_end);
+                                       copy_location->set_start (new_start);
+                               } else if (new_end > copy_location->start()) {
+                                       copy_location->set_end (new_end);
+                               } else if (newframe > 0) {
+                                       snap_to (next, -1, true);
+                                       copy_location->set_start (next);
+                                       copy_location->set_end (newframe);
+                               }
                        }
                }
+               update_marker_drag_item (copy_location);
+
+               LocationMarkers* lm = find_location_markers (real_location);
+
+               if (lm) {
+                       lm->set_position (copy_location->start(), copy_location->end());
+               }
        }
 
        drag_info.last_pointer_frame = drag_info.current_pointer_frame;
        drag_info.first_move = false;
 
-       update_marker_drag_item (copy_location);
-
-       LocationMarkers* lm = find_location_markers (real_location);
-       lm->set_position (copy_location->start(), copy_location->end());
-       edit_point_clock.set (copy_location->start());
+       if (drag_info.copied_locations.empty()) {
+               abort();
+       }
 
+       if (Profile->get_sae()) {
+               edit_point_clock.set (drag_info.copied_locations.front()->start());
+       }
        show_verbose_time_cursor (newframe, 10);
+
+#ifdef GTKOSX
+       track_canvas->update_now ();
+#endif
 }
 
 void
 Editor::marker_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
        if (drag_info.first_move) {
-               marker_drag_motion_callback (item, event);
 
+               /* just a click, do nothing but finish
+                  off the selection process
+               */
+
+               Selection::Operation op = Keyboard::selection_type (event->button.state);
+               Marker* marker = (Marker *) drag_info.data;
+
+               switch (op) {
+               case Selection::Set:
+                       if (selection->selected (marker) && selection->markers.size() > 1) {
+                               selection->set (marker);
+                       }
+                       break;
+
+               case Selection::Toggle:
+               case Selection::Extend:
+               case Selection::Add:
+                       break;
+               }
+               
+               return;
        }
 
        _dragging_edit_point = false;
        
-       Marker* marker = (Marker *) drag_info.data;
-       bool is_start;
 
        begin_reversible_command ( _("move marker") );
        XMLNode &before = session->locations()->get_state();
-       
-       Location * location = find_location_from_marker (marker, is_start);
 
-       if (location) {
-
-               if (location->locked()) {
-                       return;
-               }
+       MarkerSelection::iterator i;
+       list<Location*>::iterator x;
+       bool is_start;
 
-               if (location->is_mark()) {
-                       location->set_start (drag_info.copied_location->start());
-               } else {
-                       location->set (drag_info.copied_location->start(), drag_info.copied_location->end());
+       for (i = selection->markers.begin(), x = drag_info.copied_locations.begin(); 
+            x != drag_info.copied_locations.end() && i != selection->markers.end(); 
+            ++i, ++x) {
+       
+               Location * location = find_location_from_marker ((*i), is_start);
+               
+               if (location) {
+                       
+                       if (location->locked()) {
+                               return;
+                       }
+                       
+                       if (location->is_mark()) {
+                               location->set_start ((*x)->start());
+                       } else {
+                               location->set ((*x)->start(), (*x)->end());
+                       }
                }
        }
 
@@ -2401,7 +2772,7 @@ void
 Editor::meter_marker_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
        MeterMarker* marker = (MeterMarker *) drag_info.data;
-       nframes_t adjusted_frame;
+       nframes64_t adjusted_frame;
 
        if (drag_info.current_pointer_frame > drag_info.pointer_frame_offset) {
                adjusted_frame = drag_info.current_pointer_frame - drag_info.pointer_frame_offset;
@@ -2533,7 +2904,7 @@ void
 Editor::tempo_marker_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
        TempoMarker* marker = (TempoMarker *) drag_info.data;
-       nframes_t adjusted_frame;
+       nframes64_t adjusted_frame;
        
        if (drag_info.current_pointer_frame > drag_info.pointer_frame_offset) {
                adjusted_frame = drag_info.current_pointer_frame - drag_info.pointer_frame_offset;
@@ -2646,8 +3017,7 @@ Editor::start_control_point_grab (ArdourCanvas::Item* item, GdkEvent* event)
        drag_info.grab_x = control_point->get_x();
        drag_info.grab_y = control_point->get_y();
        control_point->line.parent_group().i2w(drag_info.grab_x, drag_info.grab_y);
-       track_canvas.w2c(drag_info.grab_x, drag_info.grab_y,
-                                                                        drag_info.grab_x, drag_info.grab_y);
+       track_canvas->w2c(drag_info.grab_x, drag_info.grab_y, drag_info.grab_x, drag_info.grab_y);
 
        drag_info.grab_frame = pixel_to_frame(drag_info.grab_x);
 
@@ -2655,7 +3025,7 @@ Editor::start_control_point_grab (ArdourCanvas::Item* item, GdkEvent* event)
 
        float fraction = 1.0 - (control_point->get_y() / control_point->line.height());
        set_verbose_canvas_cursor (control_point->line.get_verbose_cursor_string (fraction), 
-                                  drag_info.current_pointer_x + 20, drag_info.current_pointer_y + 20);
+                                  drag_info.current_pointer_x + 10, drag_info.current_pointer_y + 10);
 
        show_verbose_canvas_cursor ();
 }
@@ -2705,7 +3075,7 @@ Editor::control_point_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent*
        cy = min ((double) cp->line.height(), cy);
 
        //translate cx to frames
-       nframes_t cx_frames = unit_to_frame (cx);
+       nframes64_t cx_frames = unit_to_frame (cx);
 
        if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier()) && !drag_info.x_constrained) {
                snap_to (cx_frames);
@@ -2778,16 +3148,18 @@ Editor::start_line_grab (AutomationLine* line, GdkEvent* event)
 {
        double cx;
        double cy;
-       nframes_t frame_within_region;
+       nframes64_t frame_within_region;
 
        /* need to get x coordinate in terms of parent (TimeAxisItemView)
-          origin.
+          origin, and ditto for y.
        */
 
        cx = event->button.x;
        cy = event->button.y;
+
        line->parent_group().w2i (cx, cy);
-       frame_within_region = (nframes_t) floor (cx * frames_per_unit);
+
+       frame_within_region = (nframes64_t) floor (cx * frames_per_unit);
 
        if (!line->control_points_adjacent (frame_within_region, current_line_drag_info.before, 
                                            current_line_drag_info.after)) {
@@ -2802,12 +3174,17 @@ Editor::start_line_grab (AutomationLine* line, GdkEvent* event)
 
        start_grab (event, fader_cursor);
 
+       /* store grab start in parent frame */
+
+       drag_info.grab_x = cx;
+       drag_info.grab_y = cy;
+
        double fraction = 1.0 - (cy / line->height());
 
        line->start_drag (0, drag_info.grab_frame, fraction);
        
        set_verbose_canvas_cursor (line->get_verbose_cursor_string (fraction),
-                                  drag_info.current_pointer_x + 20, drag_info.current_pointer_y + 20);
+                                  drag_info.current_pointer_x + 10, drag_info.current_pointer_y + 10);
        show_verbose_canvas_cursor ();
 }
 
@@ -2817,35 +3194,19 @@ Editor::line_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
        AutomationLine* line = reinterpret_cast<AutomationLine *> (drag_info.data);
 
        double dy = drag_info.current_pointer_y - drag_info.last_pointer_y;
-
+       
        if (event->button.state & Keyboard::SecondaryModifier) {
                dy *= 0.1;
        }
 
-       double cx = drag_info.current_pointer_x;
        double cy = drag_info.grab_y + drag_info.cumulative_y_drag + dy;
 
-       // calculate zero crossing point. back off by .01 to stay on the
-       // positive side of zero
-       double _unused = 0;
-       double zero_gain_y = (1.0 - ZERO_GAIN_FRACTION) * line->height() - .01;
-       line->parent_group().i2w(_unused, zero_gain_y);
-
-       // make sure we hit zero when passing through
-       if ((cy < zero_gain_y and (cy - dy) > zero_gain_y)
-                       or (cy > zero_gain_y and (cy - dy) < zero_gain_y)) {
-               cy = zero_gain_y;
-       }
-
        drag_info.cumulative_y_drag = cy - drag_info.grab_y;
 
-       line->parent_group().w2i (cx, cy);
-
        cy = max (0.0, cy);
        cy = min ((double) line->height(), cy);
 
-       double fraction;
-       fraction = 1.0 - (cy / line->height());
+       double fraction = 1.0 - (cy / line->height());
 
        bool push;
 
@@ -2897,15 +3258,21 @@ Editor::start_region_grab (ArdourCanvas::Item* item, GdkEvent* event)
                speed = tv->get_diskstream()->speed();
        }
        
-       drag_info.last_frame_position = (nframes_t) (clicked_regionview->region()->position() / speed);
+       drag_info.last_frame_position = (nframes64_t) (clicked_regionview->region()->position() / speed);
        drag_info.pointer_frame_offset = drag_info.grab_frame - drag_info.last_frame_position;
-       drag_info.last_trackview = &clicked_regionview->get_time_axis_view();
+       drag_info.source_trackview = &clicked_regionview->get_time_axis_view();
+       drag_info.dest_trackview = drag_info.source_trackview;
        // we want a move threshold
        drag_info.want_move_threshold = true;
        
        show_verbose_time_cursor (drag_info.last_frame_position, 10);
 
        begin_reversible_command (_("move region(s)"));
+
+       _region_motion_group->raise_to_top ();
+
+       /* sync the canvas to what we think is its current state */
+       track_canvas->update_now();
 }
 
 void
@@ -2929,14 +3296,16 @@ Editor::start_region_copy_grab (ArdourCanvas::Item* item, GdkEvent* event)
                speed = atv->get_diskstream()->speed();
        }
        
-       drag_info.last_trackview = &clicked_regionview->get_time_axis_view();
-       drag_info.last_frame_position = (nframes_t) (clicked_regionview->region()->position() / speed);
+       drag_info.source_trackview = &clicked_regionview->get_time_axis_view();
+       drag_info.dest_trackview = drag_info.source_trackview;
+       drag_info.last_frame_position = (nframes64_t) (clicked_regionview->region()->position() / speed);
        drag_info.pointer_frame_offset = drag_info.grab_frame - drag_info.last_frame_position;
        // we want a move threshold
        drag_info.want_move_threshold = true;
        drag_info.motion_callback = &Editor::region_drag_motion_callback;
        drag_info.finished_callback = &Editor::region_drag_finished_callback;
        show_verbose_time_cursor (drag_info.last_frame_position, 10);
+       _region_motion_group->raise_to_top ();
 }
 
 void
@@ -2962,9 +3331,10 @@ Editor::start_region_brush_grab (ArdourCanvas::Item* item, GdkEvent* event)
                speed = tv->get_diskstream()->speed();
        }
        
-       drag_info.last_frame_position = (nframes_t) (clicked_regionview->region()->position() / speed);
+       drag_info.last_frame_position = (nframes64_t) (clicked_regionview->region()->position() / speed);
        drag_info.pointer_frame_offset = drag_info.grab_frame - drag_info.last_frame_position;
-       drag_info.last_trackview = &clicked_regionview->get_time_axis_view();
+       drag_info.source_trackview = &clicked_regionview->get_time_axis_view();
+       drag_info.dest_trackview = drag_info.source_trackview;
        // we want a move threshold
        drag_info.want_move_threshold = true;
        drag_info.brushing = true;
@@ -2979,24 +3349,24 @@ Editor::possibly_copy_regions_during_grab (GdkEvent* event)
 
                drag_info.want_move_threshold = false; // don't copy again
 
-               /* duplicate the region(s) */
+               /* duplicate the regionview(s) and region(s) */
 
                vector<RegionView*> new_regionviews;
                
                for (list<RegionView*>::const_iterator i = selection->regions.by_layer().begin(); i != selection->regions.by_layer().end(); ++i) {
-                       RegionView* rv;
                        RegionView* nrv;
                        AudioRegionView* arv;
-
-                       rv = (*i);
-
                        
-                       if ((arv = dynamic_cast<AudioRegionView*>(rv)) == 0) {
+                       if ((arv = dynamic_cast<AudioRegionView*>(*i)) == 0) {
                                /* XXX handle MIDI here */
                                continue;
                        }
 
-                       nrv = new AudioRegionView (*arv);
+                       const boost::shared_ptr<const Region> original = arv->region();
+                       boost::shared_ptr<Region> region_copy = RegionFactory::create (original);
+                       boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (region_copy);
+
+                       nrv = new AudioRegionView (*arv, ar);
                        nrv->get_canvas_group()->show ();
 
                        new_regionviews.push_back (nrv);
@@ -3006,15 +3376,29 @@ Editor::possibly_copy_regions_during_grab (GdkEvent* event)
                        return;
                }
 
-               /* reset selection to new regionviews */
+               /* reset selection to new regionviews. This will not set selection visual status for 
+                  these regionviews since they don't belong to a track, so do that by hand too.
+                */
                
                selection->set (new_regionviews);
 
+               for (vector<RegionView*>::iterator i = new_regionviews.begin(); i != new_regionviews.end(); ++i) {
+                       (*i)->set_selected (true);
+               }
+
                /* reset drag_info data to reflect the fact that we are dragging the copies */
                
                drag_info.data = new_regionviews.front();
 
                swap_grab (new_regionviews.front()->get_canvas_group (), 0, event->motion.time);
+               /* 
+                  sync the canvas to what we think is its current state 
+                  without it, the canvas seems to 
+                  "forget" to update properly after the upcoming reparent() 
+                  ..only if the mouse is in rapid motion at the time of the grab. 
+                  something to do with regionview creation raking so long?
+                */
+               track_canvas->update_now();
        }
 }
 
@@ -3118,8 +3502,7 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
        double x_delta;
        double y_delta = 0;
-       RegionView* rv = reinterpret_cast<RegionView*> (drag_info.data); 
-       nframes_t pending_region_position = 0;
+       nframes64_t pending_region_position = 0;
        int32_t pointer_y_span = 0, canvas_pointer_y_span = 0, original_pointer_order;
        int32_t visible_y_high = 0, visible_y_low = 512;  //high meaning higher numbered.. not the height on the screen
        bool clamp_y_axis = false;
@@ -3133,8 +3516,8 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                return;
        }
 
-       original_pointer_order = drag_info.last_trackview->order;
-               
+       original_pointer_order = drag_info.dest_trackview->order;
+       
        /************************************************************
                  Y-Delta Computation
        ************************************************************/   
@@ -3145,11 +3528,11 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                goto y_axis_done;
        }
 
-       if ((pointer_y_span = (drag_info.last_trackview->order - tv->order)) != 0) {
+       if ((pointer_y_span = (drag_info.dest_trackview->order - tv->order)) != 0) {
 
                int32_t children = 0, numtracks = 0;
                // XXX hard coding track limit, oh my, so very very bad
-               bitset <1024> tracks (0x00);
+               bitset <1024> tracks (0x00ul);
                /* get a bitmask representing the visible tracks */
 
                for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
@@ -3173,12 +3556,12 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                                        tracks = tracks |= (0x01 << atv2->order);
                                }
        
-                               height_list[atv2->order] = (*i)->height;
+                               height_list[atv2->order] = (*i)->current_height();
                                children = 1;
                                if ((children_list = atv2->get_child_list()).size() > 0) {
                                        for (list<TimeAxisView*>::iterator j = children_list.begin(); j != children_list.end(); ++j) { 
                                                tracks = tracks |= (0x01 << (atv2->order + children));
-                                               height_list[atv2->order + children] =  (*j)->height;                
+                                               height_list[atv2->order + children] =  (*j)->current_height();
                                                numtracks++;
                                                children++;     
                                        }
@@ -3189,16 +3572,16 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                /* find the actual span according to the canvas */
 
                canvas_pointer_y_span = pointer_y_span;
-               if (drag_info.last_trackview->order >= tv->order) {
+               if (drag_info.dest_trackview->order >= tv->order) {
                        int32_t y;
-                       for (y = tv->order; y < drag_info.last_trackview->order; y++) {
+                       for (y = tv->order; y < drag_info.dest_trackview->order; y++) {
                                if (height_list[y] == 0 ) {
                                        canvas_pointer_y_span--;
                                }
                        }
                } else {
                        int32_t y;
-                       for (y = drag_info.last_trackview->order;y <= tv->order; y++) {
+                       for (y = drag_info.dest_trackview->order;y <= tv->order; y++) {
                                if (    height_list[y] == 0 ) {
                                        canvas_pointer_y_span++;
                                }
@@ -3210,8 +3593,14 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                        double ix1, ix2, iy1, iy2;
                        int32_t n = 0;
 
+                       if (rv2->region()->locked()) {
+                               continue;
+                       }
+
                        rv2->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
                        rv2->get_canvas_group()->i2w (ix1, iy1);
+                       iy1 += vertical_adjustment.get_value() - canvas_timebars_vsize;
+
                        TimeAxisView* tvp2 = trackview_by_y_position (iy1);
                        RouteTimeAxisView* atv2 = dynamic_cast<RouteTimeAxisView*>(tvp2);
 
@@ -3281,13 +3670,13 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                        }
                }
 
-       } else  if (drag_info.last_trackview == tv) {
+       } else  if (drag_info.dest_trackview == tv) {
                clamp_y_axis = true;
        }         
 
   y_axis_done:
        if (!clamp_y_axis) {
-               drag_info.last_trackview = tv;        
+               drag_info.dest_trackview = tv;        
        }
          
        /************************************************************
@@ -3297,18 +3686,17 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
        /* compute the amount of pointer motion in frames, and where
           the region would be if we moved it by that much.
        */
+       if ( drag_info.move_threshold_passed ) {
 
-       if (drag_info.move_threshold_passed) {
-
-               if (drag_info.current_pointer_frame > drag_info.pointer_frame_offset) {
+               if (drag_info.current_pointer_frame >= drag_info.pointer_frame_offset) {
 
-                       nframes_t sync_frame;
-                       nframes_t sync_offset;
+                       nframes64_t sync_frame;
+                       nframes64_t sync_offset;
                        int32_t sync_dir;
 
                        pending_region_position = drag_info.current_pointer_frame - drag_info.pointer_frame_offset;
 
-                       sync_offset = rv->region()->sync_offset (sync_dir);
+                       sync_offset = clicked_regionview->region()->sync_offset (sync_dir);
 
                        /* we don't handle a sync point that lies before zero.
                         */
@@ -3322,7 +3710,7 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                                        snap_to (sync_frame);   
                                }
            
-                               pending_region_position = rv->region()->adjust_to_sync (sync_frame);
+                               pending_region_position = clicked_regionview->region()->adjust_to_sync (sync_frame);
 
                        } else {
                                pending_region_position = drag_info.last_frame_position;
@@ -3332,13 +3720,21 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                        pending_region_position = 0;
                }
          
-               if (pending_region_position > max_frames - rv->region()->length()) {
+               if (pending_region_position > max_frames - clicked_regionview->region()->length()) {
                        pending_region_position = drag_info.last_frame_position;
                }
-         
+
                // printf ("3: pending_region_position= %lu    %lu\n", pending_region_position, drag_info.last_frame_position );
-         
-               if (pending_region_position != drag_info.last_frame_position && !drag_info.x_constrained) {
+
+               bool x_move_allowed;
+               
+               if (Config->get_edit_mode() == Lock) {
+                       x_move_allowed = drag_info.x_constrained;
+               } else {
+                       x_move_allowed = !drag_info.x_constrained;
+               }
+
+               if (( pending_region_position != drag_info.last_frame_position) && x_move_allowed ) {
 
                        /* now compute the canvas unit distance we need to move the regionview
                           to make it appear at the new location.
@@ -3348,10 +3744,27 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                                x_delta = ((double) (pending_region_position - drag_info.last_frame_position) / frames_per_unit);
                        } else {
                                x_delta = -((double) (drag_info.last_frame_position - pending_region_position) / frames_per_unit);
-                       }
+                               for (list<RegionView*>::const_iterator i = selection->regions.by_layer().begin(); i != selection->regions.by_layer().end(); ++i) {
+
+                                       RegionView* rv2 = (*i);
+
+                                       // If any regionview is at zero, we need to know so we can stop further leftward motion.
+       
+                                       double ix1, ix2, iy1, iy2;
+                                       rv2->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
+                                       rv2->get_canvas_group()->i2w (ix1, iy1);
+                       
+                                       if (-x_delta > ix1 + horizontal_adjustment.get_value()) {
+                                               x_delta = 0;
+                                               pending_region_position = drag_info.last_frame_position;
+                                               break;
+                                       }
+                               }
 
+                       }
+               
                        drag_info.last_frame_position = pending_region_position;
-           
+
                } else {
                        x_delta = 0;
                }
@@ -3361,7 +3774,7 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 
                x_delta = 0;
        }
-
+       
        /*************************************************************
                         PREPARE TO MOVE
        ************************************************************/
@@ -3371,41 +3784,16 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                   trackviews. nothing to do.
                */
                return;
-       } 
-
-
-       if (x_delta < 0) {
-               for (list<RegionView*>::const_iterator i = selection->regions.by_layer().begin(); i != selection->regions.by_layer().end(); ++i) {
-
-                       RegionView* rv2 = (*i);
-
-                       // If any regionview is at zero, we need to know so we can stop further leftward motion.
-                       
-                       double ix1, ix2, iy1, iy2;
-                       rv2->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
-                       rv2->get_canvas_group()->i2w (ix1, iy1);
-
-                       if (ix1 <= 1) {
-                               x_delta = 0;
-                               break;
-                       }
-               }
        }
 
        /*************************************************************
                         MOTION                                                               
        ************************************************************/
-
-       bool do_move;
-
+       bool do_move = true;
        if (drag_info.first_move) {
-               if (drag_info.move_threshold_passed) {
-                       do_move = true;
-               } else {
+               if (!drag_info.move_threshold_passed) {
                        do_move = false;
                }
-       } else {
-               do_move = true;
        }
 
        if (do_move) {
@@ -3419,6 +3807,10 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                        double ix1, ix2, iy1, iy2;
                        int32_t temp_pointer_y_span = pointer_y_span;
 
+                       if (rv->region()->locked()) {
+                               continue;
+                       }
+
                        /* get item BBox, which will be relative to parent. so we have
                           to query on a child, then convert to world coordinates using
                           the parent.
@@ -3426,6 +3818,31 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 
                        rv->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
                        rv->get_canvas_group()->i2w (ix1, iy1);
+
+                       /* for evaluation of the track position of iy1, we have to adjust 
+                          to allow for the vertical scrolling adjustment and the height of the timebars.
+                       */
+
+                       iy1 += get_trackview_group_vertical_offset ();
+                       if (drag_info.first_move) {
+
+                               // hide any dependent views 
+       
+                               rv->get_time_axis_view().hide_dependent_views (*rv);
+
+                               /* 
+                                  reparent to a non scrolling group so that we can keep the 
+                                  region selection above all time axis views.
+                                  reparenting means we have to move the rv as the two 
+                                  parent groups have different coordinates.
+                               */
+
+                               rv->get_canvas_group()->property_y() = iy1 - 1;
+                               rv->get_canvas_group()->reparent(*_region_motion_group);
+
+                               rv->fake_set_opaque (true);
+                       }
+
                        TimeAxisView* tvp2 = trackview_by_y_position (iy1);
                        AudioTimeAxisView* canvas_atv = dynamic_cast<AudioTimeAxisView*>(tvp2);
                        AudioTimeAxisView* temp_atv;
@@ -3456,6 +3873,7 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                                                        y_delta -= (*j);        
                                                        temp_pointer_y_span--;  
                                                }
+
                                                while (temp_pointer_y_span < 0) {                 
                                                        y_delta += (*j);
                                                        if (x != original_pointer_order) { 
@@ -3473,7 +3891,7 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                  
                                                tvp2 = trackview_by_y_position (iy1 + y_delta);
                                                temp_atv = dynamic_cast<AudioTimeAxisView*>(tvp2);
-                                               rv->set_height (temp_atv->height);
+                                               rv->set_height (temp_atv->current_height());
        
                                                /*   if you un-comment the following, the region colours will follow the track colours whilst dragging,
                                                     personally, i think this can confuse things, but never mind.
@@ -3486,43 +3904,11 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                                        x++;
                                }
                        }
-         
-                       /* prevent the regionview from being moved to before 
-                          the zero position on the canvas.
-                       */
-                       /* clamp */
-               
-                       if (x_delta < 0) {
-                               if (-x_delta > ix1) {
-                                       x_delta = -ix1;
-                               }
-                       } else if ((x_delta > 0) && (rv->region()->last_frame() > max_frames - x_delta)) {
-                               x_delta = max_frames - rv->region()->last_frame();
-                       }
-
-
-                       if (drag_info.first_move) {
-
-                               /* hide any dependent views */
-                       
-                               rv->get_time_axis_view().hide_dependent_views (*rv);
-                       
-                               /* this is subtle. raising the regionview itself won't help,
-                                  because raise_to_top() just puts the item on the top of
-                                  its parent's stack. so, we need to put the trackview canvas_display group
-                                  on the top, since its parent is the whole canvas.
-                               */
-                       
-                               rv->get_canvas_group()->raise_to_top();
-                               rv->get_time_axis_view().canvas_display->raise_to_top();
-                               cursor_group->raise_to_top();
-                               rv->fake_set_opaque (true);
-                       }
 
                        if (drag_info.brushing) {
                                mouse_brush_insert_region (rv, pending_region_position);
                        } else {
-                               rv->move (x_delta, y_delta);                    
+                               rv->move (x_delta, y_delta);
                        }
 
                } /* foreach region */
@@ -3542,15 +3928,19 @@ Editor::region_drag_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 void
 Editor::region_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
-       nframes_t where;
-       RegionView* rv = reinterpret_cast<RegionView *> (drag_info.data);
-       pair<set<boost::shared_ptr<Playlist> >::iterator,bool> insert_result;
        bool nocommit = true;
-       double speed;
-       RouteTimeAxisView* atv;
-       bool regionview_y_movement;
-       bool regionview_x_movement;
        vector<RegionView*> copies;
+       RouteTimeAxisView* source_tv;
+       boost::shared_ptr<Diskstream> ds;
+       boost::shared_ptr<Playlist> from_playlist;
+       vector<RegionView*> new_selection;
+       typedef set<boost::shared_ptr<Playlist> > PlaylistSet;
+       PlaylistSet modified_playlists;
+       PlaylistSet frozen_playlists;
+       list <sigc::connection> modified_playlist_connections;
+       pair<PlaylistSet::iterator,bool> insert_result, frozen_insert_result;
+       nframes64_t drag_delta;
+       bool changed_tracks, changed_position;
 
        /* first_move is set to false if the regionview has been moved in the 
           motion handler. 
@@ -3563,12 +3953,6 @@ Editor::region_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* event
 
        nocommit = false;
 
-       /* The regionview has been moved at some stage during the grab so we need
-          to account for any mouse movement between this event and the last one. 
-       */      
-
-       region_drag_motion_callback (item, event);
-
        if (Config->get_edit_mode() == Splice && !pre_drag_region_selection.empty()) {
                selection->set (pre_drag_region_selection);
                pre_drag_region_selection.clear ();
@@ -3586,21 +3970,15 @@ Editor::region_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* event
                goto out;
        }
 
-       /* adjust for track speed */
-       speed = 1.0;
-
-       atv = dynamic_cast<AudioTimeAxisView*> (drag_info.last_trackview);
-       if (atv && atv->get_diskstream()) {
-               speed = atv->get_diskstream()->speed();
-       }
-       
-       regionview_x_movement = (drag_info.last_frame_position != (nframes_t) (rv->region()->position()/speed));
-       regionview_y_movement = (drag_info.last_trackview != &rv->get_time_axis_view());
+       char* op_string;
 
-       //printf ("last_frame: %s position is %lu  %g\n", rv->get_time_axis_view().name().c_str(), drag_info.last_frame_position, speed); 
-       //printf ("last_rackview: %s \n", drag_info.last_trackview->name().c_str()); 
+       /* reverse this here so that we have the correct logic to finalize
+          the drag.
+       */
        
-       char* op_string;
+       if (Config->get_edit_mode() == Lock) {
+               drag_info.x_constrained = !drag_info.x_constrained;
+       }
 
        if (drag_info.copy) {
                if (drag_info.x_constrained) {
@@ -3617,72 +3995,135 @@ Editor::region_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* event
        }
 
        begin_reversible_command (op_string);
+       changed_position = (drag_info.last_frame_position != (nframes64_t) (clicked_regionview->region()->position()));
+       changed_tracks = (trackview_by_y_position (drag_info.current_pointer_y) != &clicked_regionview->get_time_axis_view());
 
-       if (regionview_y_movement) {
+       drag_delta = clicked_regionview->region()->position() - drag_info.last_frame_position;
 
-               /* moved to a different audio track. */
-               
-               vector<RegionView*> new_selection;
+       track_canvas->update_now ();
 
-               for (list<RegionView*>::const_iterator i = selection->regions.by_layer().begin(); i != selection->regions.by_layer().end(); ) {
+       for (list<RegionView*>::const_iterator i = selection->regions.by_layer().begin(); i != selection->regions.by_layer().end(); ) {
                        
-                       RegionView* rv = (*i);              
+               RegionView* rv = (*i);              
+               double ix1, ix2, iy1, iy2;
+               rv->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
+               rv->get_canvas_group()->i2w (ix1, iy1);
+               iy1 += vertical_adjustment.get_value() - canvas_timebars_vsize;
+
+               TimeAxisView* dest_tv = trackview_by_y_position (iy1);
+               AudioTimeAxisView* dest_atv = dynamic_cast<AudioTimeAxisView*>(dest_tv);
+               nframes64_t where;
+
+               if (rv->region()->locked()) {
+                       ++i;
+                       continue;
+               }
 
-                       double ix1, ix2, iy1, iy2;
+               if (changed_position && !drag_info.x_constrained) {
+                       where = rv->region()->position() - drag_delta;
+               } else {
+                       where = rv->region()->position();
+               }
                        
-                       rv->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
-                       rv->get_canvas_group()->i2w (ix1, iy1);
-                       TimeAxisView* tvp2 = trackview_by_y_position (iy1);
-                       AudioTimeAxisView* atv2 = dynamic_cast<AudioTimeAxisView*>(tvp2);
+               boost::shared_ptr<Region> new_region;
 
-                       boost::shared_ptr<Playlist> from_playlist = rv->region()->playlist();
-                       boost::shared_ptr<Playlist> to_playlist = atv2->playlist();
-
-                       where = (nframes_t) (unit_to_frame (ix1) * speed);
-                       boost::shared_ptr<Region> new_region (RegionFactory::create (rv->region()));
+               if (drag_info.copy) {
+                       /* we already made a copy */
+                       new_region = rv->region();
 
                        /* undo the previous hide_dependent_views so that xfades don't
                           disappear on copying regions 
                        */
+               
+                       //rv->get_time_axis_view().reveal_dependent_views (*rv);
+               
+               } else if (changed_tracks) {
+                       new_region = RegionFactory::create (rv->region());
+               }
 
-                       rv->get_time_axis_view().reveal_dependent_views (*rv);
-
-                       if (!drag_info.copy) {
-                               
-                               /* the region that used to be in the old playlist is not
-                                  moved to the new one - we make a copy of it. as a result,
-                                  any existing editor for the region should no longer be
-                                  visible.
-                               */ 
-           
-                               rv->hide_region_editor();
-                               rv->fake_set_opaque (false);
+               if (changed_tracks || drag_info.copy) {
 
-                               session->add_command (new MementoCommand<Playlist>(*from_playlist, &from_playlist->get_state(), 0));    
-                               from_playlist->remove_region ((rv->region()));
-                               session->add_command (new MementoCommand<Playlist>(*from_playlist, 0, &from_playlist->get_state()));    
+                       boost::shared_ptr<Playlist> to_playlist = dest_atv->playlist();
 
-                       } else {
+                       latest_regionviews.clear ();
 
-                               /* the regionview we dragged around is a temporary copy, queue it for deletion */
-                               
-                               copies.push_back (rv);
+                       sigc::connection c = dest_atv->view()->RegionViewAdded.connect (mem_fun(*this, &Editor::collect_new_region_view));
+                       
+                       insert_result = modified_playlists.insert (to_playlist);
+                       if (insert_result.second) {
+                               session->add_command (new MementoCommand<Playlist>(*to_playlist, &to_playlist->get_state(), 0));
                        }
 
-                       latest_regionviews.clear ();
-                       
-                       sigc::connection c = atv2->view()->RegionViewAdded.connect (mem_fun(*this, &Editor::collect_new_region_view));
-                       session->add_command (new MementoCommand<Playlist>(*to_playlist, &to_playlist->get_state(), 0));        
                        to_playlist->add_region (new_region, where);
-                       session->add_command (new MementoCommand<Playlist>(*to_playlist, 0, &to_playlist->get_state()));        
+
                        c.disconnect ();
                                                              
                        if (!latest_regionviews.empty()) {
-                               new_selection.insert (new_selection.end(), latest_regionviews.begin(), latest_regionviews.end());
+                               // XXX why just the first one ? we only expect one
+                               //dest_atv->reveal_dependent_views (*latest_regionviews.front());
+                               new_selection.push_back (latest_regionviews.front());
                        }
 
+               } else {
+                       /* 
+                          motion on the same track. plonk the previously reparented region 
+                          back to its original canvas group (its streamview).
+                          No need to do anything for copies as they are fake regions which will be deleted.
+                       */
+
+                       RouteTimeAxisView* dest_rtv = dynamic_cast<RouteTimeAxisView*> (dest_atv);
+                       rv->get_canvas_group()->reparent (*dest_rtv->view()->canvas_item());
+                       rv->get_canvas_group()->property_y() = 0;
+                 
+                       /* just change the model */
+                       
+                       boost::shared_ptr<Playlist> playlist = dest_atv->playlist();
+
+                       insert_result = modified_playlists.insert (playlist);
+                       if (insert_result.second) {
+                               session->add_command (new MementoCommand<Playlist>(*playlist, &playlist->get_state(), 0));
+                       }
+                       /* freeze to avoid lots of relayering in the case of a multi-region drag */
+                       frozen_insert_result = frozen_playlists.insert(playlist);
+                       if (frozen_insert_result.second) {
+                               playlist->freeze();
+                       }
+
+                       rv->region()->set_position (where, (void*) this);
+               }
+
+               if (changed_tracks && !drag_info.copy) {
+
+                       /* get the playlist where this drag started. we can't use rv->region()->playlist()
+                          because we may have copied the region and it has not been attached to a playlist.
+                       */
+                       
+                       assert ((source_tv = dynamic_cast<RouteTimeAxisView*> (&rv->get_time_axis_view())));
+                       assert ((ds = source_tv->get_diskstream()));
+                       assert ((from_playlist = ds->playlist()));
+
+                       /* moved to a different audio track, without copying */
+
+                       /* the region that used to be in the old playlist is not
+                          moved to the new one - we use a copy of it. as a result,
+                          any existing editor for the region should no longer be
+                          visible.
+                       */ 
+           
+                       rv->hide_region_editor();
+                       rv->fake_set_opaque (false);
+                       
+                       /* remove the region from the old playlist */
+
+                       insert_result = modified_playlists.insert (from_playlist);
+                       if (insert_result.second) {
+                               session->add_command (new MementoCommand<Playlist>(*from_playlist, &from_playlist->get_state(), 0));
+                       }
+
+                       from_playlist->remove_region ((rv->region()));
+                       
                        /* OK, this is where it gets tricky. If the playlist was being used by >1 tracks, and the region
-                          was selected in all of them, then removing it from the playlist will have removed all
+                          was selected in all of them, then removing it from a playlist will have removed all
                           trace of it from the selection (i.e. there were N regions selected, we removed 1,
                           but since its the same playlist for N tracks, all N tracks updated themselves, removed the
                           corresponding regionview, and the selection is now empty).
@@ -3698,123 +4139,52 @@ Editor::region_drag_finished_callback (ArdourCanvas::Item* item, GdkEvent* event
                           we can just iterate.
                        */
 
-                       if (drag_info.copy) {
-                               ++i;
-                       } else {
-                               if (selection->regions.empty()) {
-                                       break;
-                               } else { 
-                                       i = selection->regions.by_layer().begin();
-                               }
+                       if (selection->regions.empty()) {
+                               break;
+                       } else { 
+                               i = selection->regions.by_layer().begin();
                        }
-               } 
 
-               selection->set (new_selection);
-
-       } else {
-
-               /* motion within a single track */
-
-               list<RegionView*> regions = selection->regions.by_layer();
-
-               if (drag_info.copy) {
-                       selection->clear_regions();
+               } else {
+                       ++i;
                }
                
-               for (list<RegionView*>::iterator i = regions.begin(); i != regions.end(); ++i) {
-
-                       rv = (*i);
-
-                       if (rv->region()->locked()) {
-                               continue;
-                       }
-                       
-
-                       if (regionview_x_movement) {
-                               double ownspeed = 1.0;
-                               atv = dynamic_cast<AudioTimeAxisView*> (&(rv->get_time_axis_view()));
-
-                               if (atv && atv->get_diskstream()) {
-                                       ownspeed = atv->get_diskstream()->speed();
-                               }
-                               
-                               /* base the new region position on the current position of the regionview.*/
-                               
-                               double ix1, ix2, iy1, iy2;
-                               
-                               rv->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
-                               rv->get_canvas_group()->i2w (ix1, iy1);
-                               where = (nframes_t) (unit_to_frame (ix1) * ownspeed);
-                               
-                       } else {
-                               
-                               where = rv->region()->position();
-                       }
-
-                       boost::shared_ptr<Playlist> to_playlist = rv->region()->playlist();
-
-                       assert (to_playlist);
-
-                       /* add the undo */
-
-                       session->add_command (new MementoCommand<Playlist>(*to_playlist, &to_playlist->get_state(), 0));        
-
-                       if (drag_info.copy) {
-
-                               boost::shared_ptr<Region> newregion;
-                               boost::shared_ptr<Region> ar;
-
-                               if ((ar = boost::dynamic_pointer_cast<AudioRegion>(rv->region())) != 0) {
-                                       newregion = RegionFactory::create (ar);
-                               } else {
-                                       /* XXX MIDI HERE drobilla */
-                                       continue;
-                               }
-
-                               /* add it */
-
-                               latest_regionviews.clear ();
-                               sigc::connection c = atv->view()->RegionViewAdded.connect (mem_fun(*this, &Editor::collect_new_region_view));
-                               to_playlist->add_region (newregion, (nframes_t) (where * atv->get_diskstream()->speed()));
-                               c.disconnect ();
-
-                               if (!latest_regionviews.empty()) {
-                                       // XXX why just the first one ? we only expect one
-                                       atv->reveal_dependent_views (*latest_regionviews.front());
-                                       selection->add (latest_regionviews);
-                               }
-                               
-                               /* if the original region was locked, we don't care for the new one */
-                               
-                               newregion->set_locked (false);                  
-
-                       } else {
-
-                               /* just change the model */
-
-                               rv->region()->set_position (where, (void*) this);
-
-                       }
-
-                       /* add the redo */
-
-                       session->add_command (new MementoCommand<Playlist>(*to_playlist, 0, &to_playlist->get_state()));
-
-                       if (drag_info.copy) {
-                               copies.push_back (rv);
-                       }
+               if (drag_info.copy) {
+                       copies.push_back (rv);
+               }
+       }
+       
+       if (new_selection.empty()) {
+               if (drag_info.copy) {
+                       /* the region(view)s that are selected and being dragged around
+                          are copies and do not belong to any track. remove them
+                          from the selection right here.
+                       */
+                       selection->clear_regions();
                }
+       } else {
+               /* this will clear any existing selection that would have been
+                  cleared in the other clause above
+               */
+               selection->set (new_selection);
        }
 
+       for (set<boost::shared_ptr<Playlist> >::iterator p = frozen_playlists.begin(); p != frozen_playlists.end(); ++p) {
+               (*p)->thaw();
+       }
+                       
   out:
-       
        if (!nocommit) {
+               for (set<boost::shared_ptr<Playlist> >::iterator p = modified_playlists.begin(); p != modified_playlists.end(); ++p) {
+                       session->add_command (new MementoCommand<Playlist>(*(*p), 0, &(*p)->get_state()));      
+               }
                commit_reversible_command ();
        }
 
        for (vector<RegionView*>::iterator x = copies.begin(); x != copies.end(); ++x) {
                delete *x;
        }
+
 }
 
 void
@@ -3838,35 +4208,43 @@ Editor::region_view_item_click (AudioRegionView& rv, GdkEventButton* event)
 
                        if (Keyboard::modifier_state_equals (event->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::SecondaryModifier))) {
                                
-                               align_region (rv.region(), SyncPoint, (nframes_t) (where * speed));
+                               align_region (rv.region(), SyncPoint, (nframes64_t) (where * speed));
                                
                        } else if (Keyboard::modifier_state_equals (event->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
                                
-                               align_region (rv.region(), End, (nframes_t) (where * speed));
+                               align_region (rv.region(), End, (nframes64_t) (where * speed));
                                
                        } else {
                                
-                               align_region (rv.region(), Start, (nframes_t) (where * speed));
+                               align_region (rv.region(), Start, (nframes64_t) (where * speed));
                        }
                }
        }
 }
 
 void
-Editor::show_verbose_time_cursor (nframes_t frame, double offset, double xpos, double ypos) 
+Editor::show_verbose_time_cursor (nframes64_t frame, double offset, double xpos, double ypos) 
 {
        char buf[128];
        SMPTE::Time smpte;
        BBT_Time bbt;
        int hours, mins;
-       nframes_t frame_rate;
+       nframes64_t frame_rate;
        float secs;
 
        if (session == 0) {
                return;
        }
 
-       switch (Profile->get_small_screen() ? ARDOUR_UI::instance()->primary_clock.mode () : ARDOUR_UI::instance()->secondary_clock.mode ()) {
+       AudioClock::Mode m;
+
+       if (Profile->get_sae() || Profile->get_small_screen()) {
+               m = ARDOUR_UI::instance()->primary_clock.mode();
+       } else {
+               m = ARDOUR_UI::instance()->secondary_clock.mode();
+       }
+
+       switch (m) {
        case AudioClock::BBT:
                session->bbt_time (frame, bbt);
                snprintf (buf, sizeof (buf), "%02" PRIu32 "|%02" PRIu32 "|%02" PRIu32, bbt.bars, bbt.beats, bbt.ticks);
@@ -3889,7 +4267,7 @@ Editor::show_verbose_time_cursor (nframes_t frame, double offset, double xpos, d
                break;
 
        default:
-               snprintf (buf, sizeof(buf), "%u", frame);
+               snprintf (buf, sizeof(buf), "%" PRIi64, frame);
                break;
        }
 
@@ -3897,20 +4275,20 @@ Editor::show_verbose_time_cursor (nframes_t frame, double offset, double xpos, d
                set_verbose_canvas_cursor (buf, xpos + offset, ypos + offset);
        }
        else {
-               set_verbose_canvas_cursor (buf, drag_info.current_pointer_x + offset, drag_info.current_pointer_y + offset);
+               set_verbose_canvas_cursor (buf, drag_info.current_pointer_x + offset - horizontal_adjustment.get_value(), drag_info.current_pointer_y + offset - vertical_adjustment.get_value() + canvas_timebars_vsize);
        }
        show_verbose_canvas_cursor ();
 }
 
 void
-Editor::show_verbose_duration_cursor (nframes_t start, nframes_t end, double offset, double xpos, double ypos) 
+Editor::show_verbose_duration_cursor (nframes64_t start, nframes64_t end, double offset, double xpos, double ypos) 
 {
        char buf[128];
        SMPTE::Time smpte;
        BBT_Time sbbt;
        BBT_Time ebbt;
        int hours, mins;
-       nframes_t distance, frame_rate;
+       nframes64_t distance, frame_rate;
        float secs;
        Meter meter_at_start(session->tempo_map().meter_at(start));
 
@@ -3918,7 +4296,15 @@ Editor::show_verbose_duration_cursor (nframes_t start, nframes_t end, double off
                return;
        }
 
-       switch (ARDOUR_UI::instance()->secondary_clock.mode ()) {
+       AudioClock::Mode m;
+
+       if (Profile->get_sae() || Profile->get_small_screen()) {
+               m = ARDOUR_UI::instance()->primary_clock.mode ();
+       } else {
+               m = ARDOUR_UI::instance()->secondary_clock.mode ();
+       }
+
+       switch (m) {
        case AudioClock::BBT:
                session->bbt_time (start, sbbt);
                session->bbt_time (end, ebbt);
@@ -3963,7 +4349,7 @@ Editor::show_verbose_duration_cursor (nframes_t start, nframes_t end, double off
                break;
 
        default:
-               snprintf (buf, sizeof(buf), "%u", end - start);
+               snprintf (buf, sizeof(buf), "%" PRIi64, end - start);
                break;
        }
 
@@ -3973,6 +4359,7 @@ Editor::show_verbose_duration_cursor (nframes_t start, nframes_t end, double off
        else {
                set_verbose_canvas_cursor (buf, drag_info.current_pointer_x + offset, drag_info.current_pointer_y + offset);
        }
+
        show_verbose_canvas_cursor ();
 }
 
@@ -4046,7 +4433,8 @@ Editor::start_selection_grab (ArdourCanvas::Item* item, GdkEvent* event)
 
        start_grab (event);
        
-       drag_info.last_trackview = clicked_trackview;
+       drag_info.source_trackview = clicked_trackview;
+       drag_info.dest_trackview = drag_info.source_trackview;
        drag_info.last_frame_position = latest_regionviews.front()->region()->position();
        drag_info.pointer_frame_offset = drag_info.grab_frame - drag_info.last_frame_position;
        
@@ -4066,8 +4454,8 @@ Editor::cancel_selection ()
 void
 Editor::start_selection_op (ArdourCanvas::Item* item, GdkEvent* event, SelectionOp op)
 {
-       nframes_t start = 0;
-       nframes_t end = 0;
+       nframes64_t start = 0;
+       nframes64_t end = 0;
 
        if (session == 0) {
                return;
@@ -4124,10 +4512,10 @@ Editor::start_selection_op (ArdourCanvas::Item* item, GdkEvent* event, Selection
 void
 Editor::drag_selection (ArdourCanvas::Item* item, GdkEvent* event)
 {
-       nframes_t start = 0;
-       nframes_t end = 0;
-       nframes_t length;
-       nframes_t pending_position;
+       nframes64_t start = 0;
+       nframes64_t end = 0;
+       nframes64_t length;
+       nframes64_t pending_position;
 
        if (drag_info.current_pointer_frame > drag_info.pointer_frame_offset) {
                pending_position = drag_info.current_pointer_frame - drag_info.pointer_frame_offset;
@@ -4232,7 +4620,7 @@ Editor::drag_selection (ArdourCanvas::Item* item, GdkEvent* event)
        }
        
        if (event->button.x >= horizontal_adjustment.get_value() + canvas_width) {
-               start_canvas_autoscroll (1);
+               start_canvas_autoscroll (1, 0);
        }
 
        if (start != end) {
@@ -4285,9 +4673,9 @@ Editor::start_trim (ArdourCanvas::Item* item, GdkEvent* event)
                speed = tv->get_diskstream()->speed();
        }
        
-       nframes_t region_start = (nframes_t) (clicked_regionview->region()->position() / speed);
-       nframes_t region_end = (nframes_t) (clicked_regionview->region()->last_frame() / speed);
-       nframes_t region_length = (nframes_t) (clicked_regionview->region()->length() / speed);
+       nframes64_t region_start = (nframes64_t) (clicked_regionview->region()->position() / speed);
+       nframes64_t region_end = (nframes64_t) (clicked_regionview->region()->last_frame() / speed);
+       nframes64_t region_length = (nframes64_t) (clicked_regionview->region()->length() / speed);
 
        //drag_info.item = clicked_regionview->get_name_highlight();
        drag_info.item = item;
@@ -4326,7 +4714,7 @@ void
 Editor::trim_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 {
        RegionView* rv = clicked_regionview;
-       nframes_t frame_delta = 0;
+       nframes64_t frame_delta = 0;
        bool left_direction;
        bool obey_snap = !Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier());
 
@@ -4410,7 +4798,7 @@ Editor::trim_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
                }
                
        case EndTrim:
-               if ((left_direction == true) && (drag_info.current_pointer_frame > (nframes_t) (rv->region()->last_frame()/speed))) {
+               if ((left_direction == true) && (drag_info.current_pointer_frame > (nframes64_t) (rv->region()->last_frame()/speed))) {
                        break;
                } else {
                        for (list<RegionView*>::const_iterator i = selection->regions.by_layer().begin(); i != selection->regions.by_layer().end(); ++i) {
@@ -4438,10 +4826,10 @@ Editor::trim_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 
        switch (trim_op) {
        case StartTrim:
-               show_verbose_time_cursor((nframes_t) (rv->region()->position()/speed), 10);     
+               show_verbose_time_cursor((nframes64_t) (rv->region()->position()/speed), 10);   
                break;
        case EndTrim:
-               show_verbose_time_cursor((nframes_t) (rv->region()->last_frame()/speed), 10);   
+               show_verbose_time_cursor((nframes64_t) (rv->region()->last_frame()/speed), 10); 
                break;
        case ContentsTrim:
                show_verbose_time_cursor(drag_info.current_pointer_frame, 10);  
@@ -4453,7 +4841,7 @@ Editor::trim_motion_callback (ArdourCanvas::Item* item, GdkEvent* event)
 }
 
 void
-Editor::single_contents_trim (RegionView& rv, nframes_t frame_delta, bool left_direction, bool swap_direction, bool obey_snap)
+Editor::single_contents_trim (RegionView& rv, nframes64_t frame_delta, bool left_direction, bool swap_direction, bool obey_snap)
 {
        boost::shared_ptr<Region> region (rv.region());
 
@@ -4461,7 +4849,7 @@ Editor::single_contents_trim (RegionView& rv, nframes_t frame_delta, bool left_d
                return;
        }
 
-       nframes_t new_bound;
+       nframes64_t new_bound;
 
        double speed = 1.0;
        TimeAxisView* tvp = clicked_trackview;
@@ -4473,27 +4861,27 @@ Editor::single_contents_trim (RegionView& rv, nframes_t frame_delta, bool left_d
        
        if (left_direction) {
                if (swap_direction) {
-                       new_bound = (nframes_t) (region->position()/speed) + frame_delta;
+                       new_bound = (nframes64_t) (region->position()/speed) + frame_delta;
                } else {
-                       new_bound = (nframes_t) (region->position()/speed) - frame_delta;
+                       new_bound = (nframes64_t) (region->position()/speed) - frame_delta;
                }
        } else {
                if (swap_direction) {
-                       new_bound = (nframes_t) (region->position()/speed) - frame_delta;
+                       new_bound = (nframes64_t) (region->position()/speed) - frame_delta;
                } else {
-                       new_bound = (nframes_t) (region->position()/speed) + frame_delta;
+                       new_bound = (nframes64_t) (region->position()/speed) + frame_delta;
                }
        }
 
        if (obey_snap) {
                snap_to (new_bound);
        }
-       region->trim_start ((nframes_t) (new_bound * speed), this);     
+       region->trim_start ((nframes64_t) (new_bound * speed), this);   
        rv.region_changed (StartChanged);
 }
 
 void
-Editor::single_start_trim (RegionView& rv, nframes_t frame_delta, bool left_direction, bool obey_snap)
+Editor::single_start_trim (RegionView& rv, nframes64_t frame_delta, bool left_direction, bool obey_snap)
 {
        boost::shared_ptr<Region> region (rv.region()); 
 
@@ -4501,7 +4889,7 @@ Editor::single_start_trim (RegionView& rv, nframes_t frame_delta, bool left_dire
                return;
        }
 
-       nframes_t new_bound;
+       nframes64_t new_bound;
 
        double speed = 1.0;
        TimeAxisView* tvp = clicked_trackview;
@@ -4512,22 +4900,22 @@ Editor::single_start_trim (RegionView& rv, nframes_t frame_delta, bool left_dire
        }
        
        if (left_direction) {
-               new_bound = (nframes_t) (region->position()/speed) - frame_delta;
+               new_bound = (nframes64_t) (region->position()/speed) - frame_delta;
        } else {
-               new_bound = (nframes_t) (region->position()/speed) + frame_delta;
+               new_bound = (nframes64_t) (region->position()/speed) + frame_delta;
        }
 
        if (obey_snap) {
                snap_to (new_bound, (left_direction ? 0 : 1));  
        }
 
-       region->trim_front ((nframes_t) (new_bound * speed), this);
+       region->trim_front ((nframes64_t) (new_bound * speed), this);
 
        rv.region_changed (Change (LengthChanged|PositionChanged|StartChanged));
 }
 
 void
-Editor::single_end_trim (RegionView& rv, nframes_t frame_delta, bool left_direction, bool obey_snap)
+Editor::single_end_trim (RegionView& rv, nframes64_t frame_delta, bool left_direction, bool obey_snap)
 {
        boost::shared_ptr<Region> region (rv.region());
 
@@ -4535,7 +4923,7 @@ Editor::single_end_trim (RegionView& rv, nframes_t frame_delta, bool left_direct
                return;
        }
 
-       nframes_t new_bound;
+       nframes64_t new_bound;
 
        double speed = 1.0;
        TimeAxisView* tvp = clicked_trackview;
@@ -4546,15 +4934,15 @@ Editor::single_end_trim (RegionView& rv, nframes_t frame_delta, bool left_direct
        }
        
        if (left_direction) {
-               new_bound = (nframes_t) ((region->last_frame() + 1)/speed) - frame_delta;
+               new_bound = (nframes64_t) ((region->last_frame() + 1)/speed) - frame_delta;
        } else {
-               new_bound = (nframes_t) ((region->last_frame() + 1)/speed) + frame_delta;
+               new_bound = (nframes64_t) ((region->last_frame() + 1)/speed) + frame_delta;
        }
 
        if (obey_snap) {
                snap_to (new_bound);
        }
-       region->trim_end ((nframes_t) (new_bound * speed), this);
+       region->trim_end ((nframes64_t) (new_bound * speed), this);
        rv.region_changed (LengthChanged);
 }
        
@@ -4594,7 +4982,7 @@ void
 Editor::point_trim (GdkEvent* event)
 {
        RegionView* rv = clicked_regionview;
-       nframes_t new_bound = drag_info.current_pointer_frame;
+       nframes64_t new_bound = drag_info.current_pointer_frame;
 
        if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
                snap_to (new_bound);
@@ -4742,9 +5130,25 @@ Editor::start_range_markerbar_op (ArdourCanvas::Item* item, GdkEvent* event, Ran
 void
 Editor::drag_range_markerbar_op (ArdourCanvas::Item* item, GdkEvent* event)
 {
-       nframes_t start = 0;
-       nframes_t end = 0;
-       ArdourCanvas::SimpleRect *crect = (range_marker_op == CreateRangeMarker) ? range_bar_drag_rect: transport_bar_drag_rect;
+       nframes64_t start = 0;
+       nframes64_t end = 0;
+       ArdourCanvas::SimpleRect *crect;
+
+       switch (range_marker_op) {
+       case CreateRangeMarker:
+               crect = range_bar_drag_rect;
+               break;
+       case CreateTransportMarker:
+               crect = transport_bar_drag_rect;
+               break;
+       case CreateCDMarker:
+               crect = cd_marker_bar_drag_rect;
+               break;
+       default:
+               cerr << "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()" << endl;
+               return;
+               break;
+       }
        
        if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
                snap_to (drag_info.current_pointer_frame);
@@ -4784,14 +5188,14 @@ Editor::drag_range_markerbar_op (ArdourCanvas::Item* item, GdkEvent* event)
 
                        update_marker_drag_item (temp_location);
                        range_marker_drag_rect->show();
-                       range_marker_drag_rect->raise_to_top();
+                       //range_marker_drag_rect->raise_to_top();
                        
                } 
                break;          
        }
        
        if (event->button.x >= horizontal_adjustment.get_value() + canvas_width) {
-               start_canvas_autoscroll (1);
+               start_canvas_autoscroll (1, 0);
        }
        
        if (start != end) {
@@ -4831,9 +5235,11 @@ Editor::end_range_markerbar_op (ArdourCanvas::Item* item, GdkEvent* event)
                        session->locations()->next_available_name(rangename,"unnamed");
                        if (range_marker_op == CreateCDMarker) {
                                flags =  Location::IsRangeMarker|Location::IsCDMarker;
+                               cd_marker_bar_drag_rect->hide();
                        }
                        else {
                                flags =  Location::IsRangeMarker;
+                               range_bar_drag_rect->hide();
                        }
                        newloc = new Location(temp_location->start(), temp_location->end(), rangename, (Location::Flags) flags);
                        session->locations()->add (newloc, true);
@@ -4841,7 +5247,6 @@ Editor::end_range_markerbar_op (ArdourCanvas::Item* item, GdkEvent* event)
                        session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
                        commit_reversible_command ();
                        
-                       range_bar_drag_rect->hide();
                        range_marker_drag_rect->hide();
                        break;
                    }
@@ -4857,8 +5262,8 @@ Editor::end_range_markerbar_op (ArdourCanvas::Item* item, GdkEvent* event)
 
                if (Keyboard::no_modifier_keys_pressed (&event->button) && range_marker_op != CreateCDMarker) {
 
-                       nframes_t start;
-                       nframes_t end;
+                       nframes64_t start;
+                       nframes64_t end;
 
                        start = session->locations()->first_mark_before (drag_info.grab_frame);
                        end = session->locations()->first_mark_after (drag_info.grab_frame);
@@ -4908,8 +5313,8 @@ Editor::start_mouse_zoom (ArdourCanvas::Item* item, GdkEvent* event)
 void
 Editor::drag_mouse_zoom (ArdourCanvas::Item* item, GdkEvent* event)
 {
-       nframes_t start;
-       nframes_t end;
+       nframes64_t start;
+       nframes64_t end;
 
        if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
                snap_to (drag_info.current_pointer_frame);
@@ -4969,7 +5374,7 @@ Editor::end_mouse_zoom (ArdourCanvas::Item* item, GdkEvent* event)
 }
 
 void
-Editor::reposition_zoom_rect (nframes_t start, nframes_t end)
+Editor::reposition_zoom_rect (nframes64_t start, nframes64_t end)
 {
        double x1 = frame_to_pixel (start);
        double x2 = frame_to_pixel (end);
@@ -4996,8 +5401,8 @@ Editor::start_rubberband_select (ArdourCanvas::Item* item, GdkEvent* event)
 void
 Editor::drag_rubberband_select (ArdourCanvas::Item* item, GdkEvent* event)
 {
-       nframes_t start;
-       nframes_t end;
+       nframes64_t start;
+       nframes64_t end;
        double y1;
        double y2;
 
@@ -5007,7 +5412,7 @@ Editor::drag_rubberband_select (ArdourCanvas::Item* item, GdkEvent* event)
                return;
        }
 
-       if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
+       if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier()) && Config->get_rubberbanding_snaps_to_grid()) {
                if (drag_info.first_move) {
                        snap_to (drag_info.grab_frame);
                } 
@@ -5064,8 +5469,7 @@ Editor::end_rubberband_select (ArdourCanvas::Item* item, GdkEvent* event)
                if (drag_info.current_pointer_y < drag_info.grab_y) {
                        y1 = drag_info.current_pointer_y;
                        y2 = drag_info.grab_y;
-               }
-               else {
+               } else {
                        y2 = drag_info.current_pointer_y;
                        y1 = drag_info.grab_y;
                }
@@ -5087,7 +5491,9 @@ Editor::end_rubberband_select (ArdourCanvas::Item* item, GdkEvent* event)
                }
                
        } else {
-               selection->clear_tracks();
+               if (!getenv("ARDOUR_SAE")) {
+                       selection->clear_tracks();
+               }
                selection->clear_regions();
                selection->clear_points ();
                selection->clear_lines ();
@@ -5170,7 +5576,7 @@ Editor::end_time_fx (ArdourCanvas::Item* item, GdkEvent* event)
                return;
        }
        
-       nframes_t newlen = drag_info.last_pointer_frame - clicked_regionview->region()->position();
+       nframes64_t newlen = drag_info.last_pointer_frame - clicked_regionview->region()->position();
 #ifdef USE_RUBBERBAND
        float percentage = (float) ((double) newlen / (double) clicked_regionview->region()->length());
 #else
@@ -5190,7 +5596,7 @@ Editor::end_time_fx (ArdourCanvas::Item* item, GdkEvent* event)
 }
 
 void
-Editor::mouse_brush_insert_region (RegionView* rv, nframes_t pos)
+Editor::mouse_brush_insert_region (RegionView* rv, nframes64_t pos)
 {
        /* no brushing without a useful snap setting */
 
@@ -5229,7 +5635,7 @@ Editor::mouse_brush_insert_region (RegionView* rv, nframes_t pos)
        double speed = atv->get_diskstream()->speed();
        
         XMLNode &before = playlist->get_state();
-       playlist->add_region (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (arv->audio_region())), (nframes_t) (pos * speed));
+       playlist->add_region (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (arv->audio_region())), (nframes64_t) (pos * speed));
         XMLNode &after = playlist->get_state();
        session->add_command(new MementoCommand<Playlist>(*playlist.get(), &before, &after));
        
@@ -5241,13 +5647,7 @@ Editor::mouse_brush_insert_region (RegionView* rv, nframes_t pos)
 gint
 Editor::track_height_step_timeout ()
 {
-       struct timeval now;
-       struct timeval delta;
-       
-       gettimeofday (&now, 0);
-       timersub (&now, &last_track_height_step_timestamp, &delta);
-       
-       if (delta.tv_sec * 1000000 + delta.tv_usec > 250000) { /* milliseconds */
+       if (get_microseconds() - last_track_height_step_timestamp < 250000) {
                current_stepping_trackview = 0;
                return false;
        }