fixes for 98% of all the warnings/errors reported by OS X gcc on tiger
[ardour.git] / gtk2_ardour / editor_mouse.cc
index 4713258b19c62c10021f7245b2b55c7bc58222a6..21f2214a7c2502c18e2429296a67dc6ca37842b3 100644 (file)
 
 #include "pbd/error.h"
 #include "pbd/enumwriter.h"
-#include <gtkmm2ext/utils.h>
-#include <gtkmm2ext/tearoff.h>
 #include "pbd/memento_command.h"
 #include "pbd/basename.h"
 #include "pbd/stateful_diff_command.h"
 
+#include "gtkmm2ext/bindings.h"
+#include "gtkmm2ext/utils.h"
+#include "gtkmm2ext/tearoff.h"
+
 #include "ardour_ui.h"
 #include "actions.h"
+#include "canvas-note.h"
 #include "editor.h"
 #include "time_axis_view.h"
 #include "audio_time_axis.h"
@@ -55,6 +58,9 @@
 #include "editor_drag.h"
 #include "automation_region_view.h"
 #include "edit_note_dialog.h"
+#include "mouse_cursors.h"
+#include "editor_cursors.h"
+#include "verbose_cursor.h"
 
 #include "ardour/types.h"
 #include "ardour/profile.h"
@@ -71,6 +77,7 @@
 #include "ardour/region_factory.h"
 #include "ardour/source_factory.h"
 #include "ardour/session.h"
+#include "ardour/operations.h"
 
 #include <bitset>
 
@@ -84,7 +91,7 @@ using namespace Editing;
 using Gtkmm2ext::Keyboard;
 
 bool
-Editor::mouse_frame (nframes64_t& where, bool& in_track_canvas) const
+Editor::mouse_frame (framepos_t& where, bool& in_track_canvas) const
 {
        int x, y;
        double wx, wy;
@@ -117,7 +124,7 @@ Editor::mouse_frame (nframes64_t& where, bool& in_track_canvas) const
        return true;
 }
 
-nframes64_t
+framepos_t
 Editor::event_frame (GdkEvent const * event, double* pcx, double* pcy) const
 {
        double cx, cy;
@@ -170,20 +177,20 @@ Editor::event_frame (GdkEvent const * event, double* pcx, double* pcy) const
 Gdk::Cursor*
 Editor::which_grabber_cursor ()
 {
-       Gdk::Cursor* c = grabber_cursor;
+       Gdk::Cursor* c = _cursors->grabber;
 
        if (_internal_editing) {
                switch (mouse_mode) {
                case MouseRange:
-                       c = midi_pencil_cursor;
+                       c = _cursors->midi_pencil;
                        break;
 
                case MouseObject:
-                       c = grabber_note_cursor;
+                       c = _cursors->grabber_note;
                        break;
 
                case MouseTimeFX:
-                       c = midi_resize_cursor;
+                       c = _cursors->midi_resize;
                        break;
 
                default:
@@ -194,9 +201,13 @@ Editor::which_grabber_cursor ()
 
                switch (_edit_point) {
                case EditAtMouse:
-                       c = grabber_edit_point_cursor;
+                       c = _cursors->grabber_edit_point;
                        break;
                default:
+                       boost::shared_ptr<Movable> m = _movable.lock();
+                       if (m && m->locked()) {
+                               c = _cursors->speaker;
+                       }
                        break;
                }
        }
@@ -204,6 +215,28 @@ Editor::which_grabber_cursor ()
        return c;
 }
 
+void
+Editor::set_current_trimmable (boost::shared_ptr<Trimmable> t)
+{
+       boost::shared_ptr<Trimmable> st = _trimmable.lock();
+
+       if (!st || st == t) {
+               _trimmable = t;
+               set_canvas_cursor ();
+       }
+}
+
+void
+Editor::set_current_movable (boost::shared_ptr<Movable> m)
+{
+       boost::shared_ptr<Movable> sm = _movable.lock();
+
+       if (!sm || sm != m) {
+               _movable = m;
+               set_canvas_cursor ();
+       }
+}
+
 void
 Editor::set_canvas_cursor ()
 {
@@ -211,7 +244,7 @@ Editor::set_canvas_cursor ()
 
                switch (mouse_mode) {
                case MouseRange:
-                       current_canvas_cursor = midi_pencil_cursor;
+                       current_canvas_cursor = _cursors->midi_pencil;
                        break;
 
                case MouseObject:
@@ -219,7 +252,7 @@ Editor::set_canvas_cursor ()
                        break;
 
                case MouseTimeFX:
-                       current_canvas_cursor = midi_resize_cursor;
+                       current_canvas_cursor = _cursors->midi_resize;
                        break;
 
                default:
@@ -230,7 +263,7 @@ Editor::set_canvas_cursor ()
 
                switch (mouse_mode) {
                case MouseRange:
-                       current_canvas_cursor = selector_cursor;
+                       current_canvas_cursor = _cursors->selector;
                        break;
 
                case MouseObject:
@@ -238,19 +271,23 @@ Editor::set_canvas_cursor ()
                        break;
 
                case MouseGain:
-                       current_canvas_cursor = cross_hair_cursor;
+                       current_canvas_cursor = _cursors->cross_hair;
                        break;
 
                case MouseZoom:
-                       current_canvas_cursor = zoom_cursor;
+                       if (Keyboard::the_keyboard().key_is_down (GDK_Control_L)) {
+                               current_canvas_cursor = _cursors->zoom_out;
+                       } else {
+                               current_canvas_cursor = _cursors->zoom_in;
+                       }
                        break;
 
                case MouseTimeFX:
-                       current_canvas_cursor = time_fx_cursor; // just use playhead
+                       current_canvas_cursor = _cursors->time_fx; // just use playhead
                        break;
 
                case MouseAudition:
-                       current_canvas_cursor = speaker_cursor;
+                       current_canvas_cursor = _cursors->speaker;
                        break;
                }
        }
@@ -262,13 +299,21 @@ Editor::set_canvas_cursor ()
                current_canvas_cursor = which_grabber_cursor ();
                break;
        case JOIN_OBJECT_RANGE_RANGE:
-               current_canvas_cursor = selector_cursor;
+               current_canvas_cursor = _cursors->selector;
                break;
        }
 
-       if (is_drawable()) {
-               track_canvas->get_window()->set_cursor(*current_canvas_cursor);
+       /* up-down cursor as a cue that automation can be dragged up and down when in join object/range mode */
+       if (join_object_range_button.get_active() && last_item_entered) {
+               if (last_item_entered->property_parent() && (*last_item_entered->property_parent()).get_data (X_("timeselection"))) {
+                       pair<TimeAxisView*, int> tvp = trackview_by_y_position (_last_motion_y + vertical_adjustment.get_value() - canvas_timebars_vsize);
+                       if (dynamic_cast<AutomationTimeAxisView*> (tvp.first)) {
+                               current_canvas_cursor = _cursors->up_down;
+                       }
+               }
        }
+
+       set_canvas_cursor (current_canvas_cursor, true);
 }
 
 void
@@ -318,6 +363,8 @@ Editor::set_mouse_mode (MouseMode m, bool force)
        /* go there and back to ensure that the toggled handler is called to set up mouse_mode */
        tact->set_active (false);
        tact->set_active (true);
+
+       MouseModeChanged (); /* EMIT SIGNAL */
 }
 
 void
@@ -326,34 +373,33 @@ Editor::mouse_mode_toggled (MouseMode m)
        mouse_mode = m;
 
        instant_save ();
-        
-        if (!internal_editing()) {
-                if (mouse_mode != MouseRange && _join_object_range_state == JOIN_OBJECT_RANGE_NONE) {
-                        
-                        /* in all modes except range and joined object/range, hide the range selection,
-                           show the object (region) selection.
-                        */
-                        
-                        for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
-                                (*i)->set_should_show_selection (true);
-                        }
-                        for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
-                                (*i)->hide_selection ();
-                        }
-                        
-                } else {
-                        
-                        /*
-                          in range or object/range mode, show the range selection.
-                        */
-                        
-                        for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
-                                (*i)->show_selection (selection->time);
-                        }
-                }
-        }
+
+       if (!internal_editing()) {
+               if (mouse_mode != MouseRange && _join_object_range_state == JOIN_OBJECT_RANGE_NONE) {
+
+                       /* in all modes except range and joined object/range, hide the range selection,
+                          show the object (region) selection.
+                       */
+
+                       for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+                               (*i)->hide_selection ();
+                       }
+
+               } else {
+
+                       /*
+                         in range or object/range mode, show the range selection.
+                       */
+
+                       for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+                               (*i)->show_selection (selection->time);
+                       }
+               }
+       }
 
        set_canvas_cursor ();
+
+       MouseModeChanged (); /* EMIT SIGNAL */
 }
 
 void
@@ -460,15 +506,13 @@ Editor::button_selection (ArdourCanvas::Item* /*item*/, GdkEvent* event, ItemTyp
        Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
        bool press = (event->type == GDK_BUTTON_PRESS);
 
-       // begin_reversible_command (_("select on click"));
-
        switch (item_type) {
        case RegionItem:
                if (mouse_mode != MouseRange || _join_object_range_state == JOIN_OBJECT_RANGE_OBJECT) {
                        set_selected_regionview_from_click (press, op, true);
                } else if (event->type == GDK_BUTTON_PRESS) {
                        selection->clear_tracks ();
-                       set_selected_track_as_side_effect (true);
+                       set_selected_track_as_side_effect (op, true);
                }
                if (_join_object_range_state == JOIN_OBJECT_RANGE_OBJECT && !selection->regions.empty()) {
                        clicked_selection = select_range_around_region (selection->regions.front());
@@ -477,12 +521,12 @@ Editor::button_selection (ArdourCanvas::Item* /*item*/, GdkEvent* event, ItemTyp
 
        case RegionViewNameHighlight:
        case RegionViewName:
-        case LeftFrameHandle:
-        case RightFrameHandle:
+       case LeftFrameHandle:
+       case RightFrameHandle:
                if (mouse_mode != MouseRange || _join_object_range_state == JOIN_OBJECT_RANGE_OBJECT) {
                        set_selected_regionview_from_click (press, op, true);
                } else if (event->type == GDK_BUTTON_PRESS) {
-                       set_selected_track_as_side_effect ();
+                       set_selected_track_as_side_effect (op);
                }
                break;
 
@@ -494,12 +538,12 @@ Editor::button_selection (ArdourCanvas::Item* /*item*/, GdkEvent* event, ItemTyp
                if (mouse_mode != MouseRange || _join_object_range_state == JOIN_OBJECT_RANGE_OBJECT) {
                        set_selected_regionview_from_click (press, op, true);
                } else if (event->type == GDK_BUTTON_PRESS) {
-                       set_selected_track_as_side_effect ();
+                       set_selected_track_as_side_effect (op);
                }
                break;
 
        case ControlPointItem:
-               set_selected_track_as_side_effect (true);
+               set_selected_track_as_side_effect (op, true);
                if (mouse_mode != MouseRange || _join_object_range_state == JOIN_OBJECT_RANGE_OBJECT) {
                        set_selected_control_point_from_click (op, false);
                }
@@ -509,12 +553,12 @@ Editor::button_selection (ArdourCanvas::Item* /*item*/, GdkEvent* event, ItemTyp
                /* for context click, select track */
                if (event->button.button == 3) {
                        selection->clear_tracks ();
-                       set_selected_track_as_side_effect (true);
+                       set_selected_track_as_side_effect (op, true);
                }
                break;
 
        case AutomationTrackItem:
-               set_selected_track_as_side_effect (true);
+               set_selected_track_as_side_effect (op, true);
                break;
 
        default:
@@ -545,26 +589,42 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                return true;
 
        case TempoMarkerItem:
-               _drags->set (
-                       new TempoMarkerDrag (
-                               this,
-                               item,
-                               Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)
-                               ),
-                       event
-                       );
-               return true;
+       {
+               TempoMarker* m = reinterpret_cast<TempoMarker*> (item->get_data ("marker"));
+               assert (m);
+               if (m->tempo().movable ()) {
+                       _drags->set (
+                               new TempoMarkerDrag (
+                                       this,
+                                       item,
+                                       Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)
+                                       ),
+                               event
+                               );
+                       return true;
+               } else {
+                       return false;
+               }
+       }
 
        case MeterMarkerItem:
-               _drags->set (
-                       new MeterMarkerDrag (
-                               this,
-                               item,
-                               Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)
-                               ),
-                       event
-                       );
-               return true;
+       {
+               MeterMarker* m = reinterpret_cast<MeterMarker*> (item->get_data ("marker"));
+               assert (m);
+               if (m->meter().movable ()) {
+                       _drags->set (
+                               new MeterMarkerDrag (
+                                       this,
+                                       item,
+                                       Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)
+                                       ),
+                               event
+                               );
+                       return true;
+               } else {
+                       return false;
+               }
+       }
 
        case MarkerBarItem:
        case TempoBarItem:
@@ -654,7 +714,7 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                                        AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*> (tvp.first);
                                        if (join_object_range_button.get_active() && atv) {
                                                /* smart "join" mode: drag automation */
-                                               _drags->set (new AutomationRangeDrag (this, atv->base_item(), selection->time), event);
+                                               _drags->set (new AutomationRangeDrag (this, atv->base_item(), selection->time), event, _cursors->up_down);
                                        } else {
                                                /* this was debated, but decided the more common action was to
                                                   make a new selection */
@@ -664,37 +724,51 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        }
                        break;
 
-                case NoteItem:
-                        if (internal_editing()) {
-                                /* trim notes if we're in internal edit mode and near the ends of the note */
-                                _drags->set (new NoteResizeDrag (this, item), event);
-                        }
+               case NoteItem:
+                       if (internal_editing()) {
+                               /* trim notes if we're in internal edit mode and near the ends of the note */
+                               ArdourCanvas::CanvasNote* cn = dynamic_cast<ArdourCanvas::CanvasNote*> (item);
+                               if (cn && cn->big_enough_to_trim() && cn->mouse_near_ends()) {
+                                       _drags->set (new NoteResizeDrag (this, item), event, current_canvas_cursor);
+                               } else {
+                                       _drags->set (new NoteDrag (this, item), event);
+                               }
+                       }
                        return true;
 
-                case StreamItem:
-                        if (internal_editing()) {
-                                _drags->set (new RegionCreateDrag (this, item, clicked_axisview), event);
-                                return true;
-                        } else {
+               case StreamItem:
+                       if (internal_editing()) {
+                               if (dynamic_cast<MidiTimeAxisView*> (clicked_axisview)) {
+                                       _drags->set (new RegionCreateDrag (this, item, clicked_axisview), event);
+                                       return true;
+                               } 
+                       } else {
                                _drags->set (new SelectionDrag (this, item, SelectionDrag::CreateSelection), event);
                                return true;
                        }
-                        break;
+                       break;
 
-                case RegionViewNameHighlight:
-                case LeftFrameHandle:
-                case RightFrameHandle:
-                {
-                        RegionSelection s = get_equivalent_regions (selection->regions, Properties::edit.property_id);
-                        _drags->set (new TrimDrag (this, item, clicked_regionview, s.by_layer()), event);
-                        return true;
-                        break;
-                }
+               case RegionViewNameHighlight:
+                       if (!clicked_regionview->region()->locked()) {
+                               RegionSelection s = get_equivalent_regions (selection->regions, Properties::edit.property_id);
+                               _drags->set (new TrimDrag (this, item, clicked_regionview, s.by_layer()), event);
+                               return true;
+                       }
+                       break;
+
+               case LeftFrameHandle:
+               case RightFrameHandle:
+                       if (!internal_editing() && !clicked_regionview->region()->locked()) {
+                               RegionSelection s = get_equivalent_regions (selection->regions, Properties::edit.property_id);
+                               _drags->set (new TrimDrag (this, item, clicked_regionview, s.by_layer()), event);
+                               return true;
+                       }
+                       break;
 
                default:
-                        if (!internal_editing()) {
-                                _drags->set (new SelectionDrag (this, item, SelectionDrag::CreateSelection), event);
-                        }
+                       if (!internal_editing()) {
+                               _drags->set (new SelectionDrag (this, item, SelectionDrag::CreateSelection), event);
+                       }
                }
                return true;
                break;
@@ -703,11 +777,16 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                switch (item_type) {
                case NoteItem:
                        if (internal_editing()) {
-                               _drags->set (new NoteDrag (this, item), event);
+                               ArdourCanvas::CanvasNoteEvent* cn = dynamic_cast<ArdourCanvas::CanvasNoteEvent*> (item);
+                               if (cn->mouse_near_ends()) {
+                                       _drags->set (new NoteResizeDrag (this, item), event, current_canvas_cursor);
+                               } else {
+                                       _drags->set (new NoteDrag (this, item), event);
+                               }
                                return true;
                        }
                        break;
-                       
+
                default:
                        break;
                }
@@ -723,24 +802,24 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        case FadeInHandleItem:
                        {
                                RegionSelection s = get_equivalent_regions (selection->regions, Properties::edit.property_id);
-                               _drags->set (new FadeInDrag (this, item, reinterpret_cast<RegionView*> (item->get_data("regionview")), s), event);
+                               _drags->set (new FadeInDrag (this, item, reinterpret_cast<RegionView*> (item->get_data("regionview")), s), event, _cursors->fade_in);
                                return true;
                        }
 
                        case FadeOutHandleItem:
                        {
                                RegionSelection s = get_equivalent_regions (selection->regions, Properties::edit.property_id);
-                               _drags->set (new FadeOutDrag (this, item, reinterpret_cast<RegionView*> (item->get_data("regionview")), s), event);
+                               _drags->set (new FadeOutDrag (this, item, reinterpret_cast<RegionView*> (item->get_data("regionview")), s), event, _cursors->fade_out);
                                return true;
                        }
 
                        case FeatureLineItem:
-                       {                       
+                       {
                                if (Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier)) {
                                        remove_transient(item);
                                        return true;
                                }
-                               
+
                                _drags->set (new FeatureLineDrag (this, item), event);
                                return true;
                                break;
@@ -753,17 +832,21 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                                        */
                                        break;
                                }
-                               
+
+                               if (internal_editing ()) {
+                                       /* no region drags in internal edit mode */
+                                       break;
+                               }
+
                                /* click on a normal region view */
                                if (Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)) {
                                        add_region_copy_drag (item, event, clicked_regionview);
-                               } 
-                               else if (Keyboard::the_keyboard().key_is_down (GDK_b)) {
+                               } else if (Keyboard::the_keyboard().key_is_down (GDK_b)) {
                                        add_region_brush_drag (item, event, clicked_regionview);
                                } else {
                                        add_region_drag (item, event, clicked_regionview);
                                }
-                               
+
                                if (_join_object_range_state == JOIN_OBJECT_RANGE_OBJECT && !selection->regions.empty()) {
                                        _drags->add (new SelectionDrag (this, clicked_axisview->get_selection_rect (clicked_selection)->rect, SelectionDrag::SelectionMove));
                                }
@@ -774,7 +857,7 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        case RegionViewNameHighlight:
                        case LeftFrameHandle:
                         case RightFrameHandle:
-                               if (!internal_editing ()) {
+                               if (!clicked_regionview->region()->locked()) {
                                        RegionSelection s = get_equivalent_regions (selection->regions, Properties::edit.property_id);
                                        _drags->set (new TrimDrag (this, item, clicked_regionview, s.by_layer()), event);
                                        return true;
@@ -802,17 +885,29 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
                        case StreamItem:
                                if (internal_editing()) {
-                                       _drags->set (new RegionCreateDrag (this, item, clicked_axisview), event);
+                                       if (dynamic_cast<MidiTimeAxisView*> (clicked_axisview)) {
+                                               _drags->set (new RegionCreateDrag (this, item, clicked_axisview), event);
+                                       }
                                        return true;
                                } else {
                                        _drags->set (new RubberbandSelectDrag (this, item), event);
                                }
                                break;
-                               
+
                        case AutomationTrackItem:
-                               /* rubberband drag to select automation points */
-                               _drags->set (new RubberbandSelectDrag (this, item), event);
+                       {
+                               TimeAxisView* parent = clicked_axisview->get_parent ();
+                               AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*> (clicked_axisview);
+                               assert (atv);
+                               if (parent && dynamic_cast<MidiTimeAxisView*> (parent) && atv->show_regions ()) {
+                                       /* create a MIDI region so that we have somewhere to put automation */
+                                       _drags->set (new RegionCreateDrag (this, item, parent), event);
+                               } else {
+                                       /* rubberband drag to select automation points */
+                                       _drags->set (new RubberbandSelectDrag (this, item), event);
+                               }
                                break;
+                       }
 
                        case SelectionItem:
                        {
@@ -824,7 +919,7 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                                                /* if we're over an automation track, start a drag of its data */
                                                AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*> (tvp.first);
                                                if (atv) {
-                                                       _drags->set (new AutomationRangeDrag (this, atv->base_item(), selection->time), event);
+                                                       _drags->set (new AutomationRangeDrag (this, atv->base_item(), selection->time), event, _cursors->up_down);
                                                }
 
                                                /* if we're over a track and a region, and in the `object' part of a region,
@@ -836,7 +931,7 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                                                        if (t) {
                                                                boost::shared_ptr<Playlist> pl = t->playlist ();
                                                                if (pl) {
-                                                                       
+
                                                                        boost::shared_ptr<Region> r = pl->top_region_at (event_frame (event));
                                                                        if (r) {
                                                                                RegionView* rv = rtv->view()->find_view (r);
@@ -947,7 +1042,7 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
        case MouseTimeFX:
                if (internal_editing() && item_type == NoteItem) {
                        /* drag notes if we're in internal edit mode */
-                       _drags->set (new NoteResizeDrag (this, item), event);
+                       _drags->set (new NoteResizeDrag (this, item), event, current_canvas_cursor);
                        return true;
                } else if ((!internal_editing() || dynamic_cast<AudioRegionView*> (clicked_regionview)) && clicked_regionview) {
                        /* do time-FX if we're not in internal edit mode, or we are but we clicked on an audio region */
@@ -962,7 +1057,7 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                scrub_reverse_distance = 0;
                last_scrub_x = event->button.x;
                scrubbing_direction = 0;
-               track_canvas->get_window()->set_cursor (*transparent_cursor);
+               set_canvas_cursor (_cursors->transparent);
                return true;
                break;
 
@@ -981,6 +1076,11 @@ Editor::button_press_handler_2 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
        case MouseObject:
                switch (item_type) {
                case RegionItem:
+                       if (internal_editing ()) {
+                               /* no region drags in internal edit mode */
+                               return false;
+                       }
+
                        if (Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)) {
                                add_region_copy_drag (item, event, clicked_regionview);
                        } else {
@@ -1000,6 +1100,10 @@ Editor::button_press_handler_2 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
                switch (item_type) {
                case RegionViewNameHighlight:
+                        _drags->set (new TrimDrag (this, item, clicked_regionview, selection->regions.by_layer()), event);
+                        return true;
+                        break;
+
                 case LeftFrameHandle:
                 case RightFrameHandle:
                        if (!internal_editing ()) {
@@ -1027,7 +1131,7 @@ Editor::button_press_handler_2 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
        case MouseZoom:
                if (Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
-                       temporal_zoom_session();
+                       temporal_zoom_to_frame (false, event_frame (event));
                } else {
                        temporal_zoom_to_frame (true, event_frame(event));
                }
@@ -1063,6 +1167,8 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
                }
        }
 
+        pre_press_cursor = current_canvas_cursor;
+
        track_canvas->grab_focus();
 
        if (_session && _session->actively_recording()) {
@@ -1093,6 +1199,7 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
                break;
 
        default:
+                return button_press_dispatch (&event->button);
                break;
 
        }
@@ -1100,12 +1207,37 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
        return false;
 }
 
+bool
+Editor::button_press_dispatch (GdkEventButton* ev)
+{
+        /* this function is intended only for buttons 4 and above.
+         */
+
+        Gtkmm2ext::MouseButton b (ev->state, ev->button);
+        return button_bindings->activate (b, Gtkmm2ext::Bindings::Press);
+}
+
+bool
+Editor::button_release_dispatch (GdkEventButton* ev)
+{
+        /* this function is intended only for buttons 4 and above.
+         */
+
+        Gtkmm2ext::MouseButton b (ev->state, ev->button);
+        return button_bindings->activate (b, Gtkmm2ext::Bindings::Release);
+}
+
 bool
 Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_type)
 {
-       nframes64_t where = event_frame (event, 0, 0);
+       framepos_t where = event_frame (event, 0, 0);
        AutomationTimeAxisView* atv = 0;
 
+        if (pre_press_cursor) {
+                set_canvas_cursor (pre_press_cursor);
+                pre_press_cursor = 0;
+        }
+
        /* no action if we're recording */
 
        if (_session && _session->actively_recording()) {
@@ -1125,12 +1257,14 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                were_dragging = true;
        }
 
+        update_region_layering_order_editor ();
+
        /* edit events get handled here */
 
        if (!_drags->active () && Keyboard::is_edit_event (&event->button)) {
                switch (item_type) {
                case RegionItem:
-                       edit_region ();
+                       show_region_properties ();
                        break;
 
                case TempoMarkerItem:
@@ -1180,7 +1314,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                                break;
 
                        case StreamItem:
-                               popup_track_context_menu (1, event->button.time, item_type, false, where);
+                               popup_track_context_menu (1, event->button.time, item_type, false);
                                break;
 
                        case RegionItem:
@@ -1188,15 +1322,15 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        case LeftFrameHandle:
                        case RightFrameHandle:
                        case RegionViewName:
-                               popup_track_context_menu (1, event->button.time, item_type, false, where);
+                               popup_track_context_menu (1, event->button.time, item_type, false);
                                break;
 
                        case SelectionItem:
-                               popup_track_context_menu (1, event->button.time, item_type, true, where);
+                               popup_track_context_menu (1, event->button.time, item_type, true);
                                break;
 
                        case AutomationTrackItem:
-                               popup_track_context_menu (1, event->button.time, item_type, false, where);
+                               popup_track_context_menu (1, event->button.time, item_type, false);
                                break;
 
                        case MarkerBarItem:
@@ -1221,7 +1355,11 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                                break;
 
                        case CrossfadeViewItem:
-                               popup_track_context_menu (1, event->button.time, item_type, false, where);
+                               popup_track_context_menu (1, event->button.time, item_type, false);
+                               break;
+
+                       case ControlPointItem:
+                               popup_control_point_context_menu (item, event);
                                break;
 
 #ifdef WITH_CMT
@@ -1273,11 +1411,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        break;
 
                case ControlPointItem:
-                       if (eff == MouseGain) {
-                               remove_gain_control_point (item, event);
-                       } else {
-                               remove_control_point (item, event);
-                       }
+                       remove_control_point (item);
                        break;
 
                case NoteItem:
@@ -1379,7 +1513,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        break;
 
                case MouseAudition:
-                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                        if (scrubbing_direction == 0) {
                                /* no drag, just a click */
                                switch (item_type) {
@@ -1400,6 +1534,8 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
                }
 
+                /* do any (de)selection operations that should occur on button release */
+                button_selection (item, event, item_type);
                return true;
                break;
 
@@ -1444,6 +1580,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
        default:
                break;
        }
+
        return false;
 }
 
@@ -1455,10 +1592,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        double fraction;
         bool ret = true;
 
-       if (last_item_entered != item) {
-               last_item_entered = item;
-               last_item_entered_n = 0;
-       }
+       last_item_entered = item;
 
        switch (item_type) {
        case ControlPointItem:
@@ -1476,14 +1610,11 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                        fraction = 1.0 - (cp->get_y() / cp->line().height());
 
                        if (is_drawable() && !_drags->active ()) {
-                               track_canvas->get_window()->set_cursor (*fader_cursor);
+                               set_canvas_cursor (_cursors->fader);
                        }
 
-                       last_item_entered_n++;
-                       set_verbose_canvas_cursor (cp->line().get_verbose_cursor_string (fraction), at_x, at_y);
-                       if (last_item_entered_n < 10) {
-                               show_verbose_canvas_cursor ();
-                       }
+                       _verbose_cursor->set (cp->line().get_verbose_cursor_string (fraction), at_x, at_y);
+                       _verbose_cursor->show ();
                }
                break;
 
@@ -1493,7 +1624,7 @@ 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);
+                               set_canvas_cursor (_cursors->fader);
                        }
                }
                break;
@@ -1506,26 +1637,22 @@ 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);
+                               set_canvas_cursor (_cursors->fader);
                        }
                }
                break;
 
        case RegionViewNameHighlight:
-               if (is_drawable() && mouse_mode == MouseObject && !internal_editing()) {
-                       track_canvas->get_window()->set_cursor (*trimmer_cursor);
+               if (is_drawable() && mouse_mode == MouseObject && entered_regionview) {
+                       set_canvas_cursor_for_region_view (event->crossing.x, entered_regionview);
+                       _over_region_trim_target = true;
                }
                break;
 
        case LeftFrameHandle:
-               if (is_drawable() && mouse_mode == MouseObject && !internal_editing()) {
-                       track_canvas->get_window()->set_cursor (*left_side_trim_cursor);
-               }
-                break;
-
        case RightFrameHandle:
-               if (is_drawable() && mouse_mode == MouseObject && !internal_editing()) {
-                       track_canvas->get_window()->set_cursor (*right_side_trim_cursor);
+               if (is_drawable() && mouse_mode == MouseObject && !internal_editing() && entered_regionview) {
+                       set_canvas_cursor_for_region_view (event->crossing.x, entered_regionview);
                }
                 break;
 
@@ -1540,7 +1667,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
 #endif
 
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*trimmer_cursor);
+                       set_canvas_cursor (_cursors->trimmer);
                }
                break;
 
@@ -1548,10 +1675,10 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                if (is_drawable()) {
                        switch (_edit_point) {
                        case EditAtMouse:
-                               track_canvas->get_window()->set_cursor (*grabber_edit_point_cursor);
+                               set_canvas_cursor (_cursors->grabber_edit_point);
                                break;
                        default:
-                               track_canvas->get_window()->set_cursor (*grabber_cursor);
+                               set_canvas_cursor (_cursors->grabber);
                                break;
                        }
                }
@@ -1563,7 +1690,8 @@ 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);
+                               set_canvas_cursor_for_region_view (event->crossing.x, entered_regionview);
+                               _over_region_trim_target = true;
                        }
                }
                break;
@@ -1574,17 +1702,17 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                        Gdk::Cursor *cursor;
                        switch (mouse_mode) {
                        case MouseRange:
-                               cursor = selector_cursor;
+                               cursor = _cursors->selector;
                                break;
                        case MouseZoom:
-                               cursor = zoom_cursor;
+                               cursor = _cursors->zoom_in;
                                break;
                        default:
-                               cursor = cross_hair_cursor;
+                               cursor = _cursors->cross_hair;
                                break;
                        }
 
-                       track_canvas->get_window()->set_cursor (*cursor);
+                       set_canvas_cursor (cursor);
 
                        AutomationTimeAxisView* atv;
                        if ((atv = static_cast<AutomationTimeAxisView*>(item->get_data ("trackview"))) != 0) {
@@ -1601,7 +1729,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case MeterBarItem:
        case TempoBarItem:
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*timebar_cursor);
+                       set_canvas_cursor (_cursors->timebar);
                }
                break;
 
@@ -1615,7 +1743,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case MeterMarkerItem:
        case TempoMarkerItem:
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*timebar_cursor);
+                       set_canvas_cursor (_cursors->timebar);
                }
                break;
 
@@ -1623,29 +1751,33 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                if (mouse_mode == MouseObject && !internal_editing()) {
                        ArdourCanvas::SimpleRect *rect = dynamic_cast<ArdourCanvas::SimpleRect *> (item);
                        if (rect) {
-                               rect->property_fill_color_rgba() = 0;
-                               rect->property_outline_pixels() = 1;
+                               rect->property_fill_color_rgba() = 0xBBBBBBAA;
                        }
-                       track_canvas->get_window()->set_cursor (*fade_in_cursor);
+                       set_canvas_cursor (_cursors->fade_in);
                }
-                break;
+               break;
 
        case FadeOutHandleItem:
                if (mouse_mode == MouseObject && !internal_editing()) {
                        ArdourCanvas::SimpleRect *rect = dynamic_cast<ArdourCanvas::SimpleRect *> (item);
                        if (rect) {
-                               rect->property_fill_color_rgba() = 0;
-                               rect->property_outline_pixels() = 1;
+                               rect->property_fill_color_rgba() = 0xBBBBBBAA;
                        }
-                       track_canvas->get_window()->set_cursor (*fade_out_cursor);
+                       set_canvas_cursor (_cursors->fade_out);
                }
                break;
        case FeatureLineItem:
                {
-                       ArdourCanvas::SimpleLine *line = dynamic_cast<ArdourCanvas::SimpleLine *> (item);
-                       line->property_color_rgba() = 0xFF0000FF;
+                       ArdourCanvas::Line *line = dynamic_cast<ArdourCanvas::Line *> (item);
+                       line->property_fill_color_rgba() = 0xFF0000FF;
+               }
+               break;
+       case SelectionItem:
+               if (join_object_range_button.get_active()) {
+                       set_canvas_cursor ();
                }
                break;
+
        default:
                break;
        }
@@ -1674,7 +1806,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
 }
 
 bool
-Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_type)
+Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent*, ItemType item_type)
 {
        AutomationLine* al;
        ControlPoint* cp;
@@ -1682,7 +1814,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        Location *loc;
        RegionView* rv;
        bool is_start;
-        bool ret = true;
+       bool ret = true;
 
        switch (item_type) {
        case ControlPointItem:
@@ -1694,10 +1826,10 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                }
 
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                }
 
-               hide_verbose_canvas_cursor ();
+               _verbose_cursor->hide ();
                break;
 
        case RegionViewNameHighlight:
@@ -1714,8 +1846,10 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case MarkerViewHandleEndItem:
 #endif
 
+               _over_region_trim_target = false;
+
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                }
                break;
 
@@ -1728,15 +1862,17 @@ 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);
+                       set_canvas_cursor (current_canvas_cursor);
                }
                break;
 
        case RegionViewName:
                /* see enter_handler() for notes */
+               _over_region_trim_target = false;
+
                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);
+                               set_canvas_cursor (current_canvas_cursor);
                        }
                }
                break;
@@ -1748,7 +1884,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case TempoBarItem:
        case MarkerBarItem:
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                }
                break;
 
@@ -1765,7 +1901,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case TempoMarkerItem:
 
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*timebar_cursor);
+                       set_canvas_cursor (_cursors->timebar);
                }
 
                break;
@@ -1780,20 +1916,20 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                                rect->property_outline_pixels() = 0;
                        }
                }
-               track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+               set_canvas_cursor (current_canvas_cursor);
                break;
 
        case AutomationTrackItem:
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                        clear_entered_track = true;
                        Glib::signal_idle().connect (sigc::mem_fun(*this, &Editor::left_automation_track));
                }
                break;
        case FeatureLineItem:
                {
-                       ArdourCanvas::SimpleLine *line = dynamic_cast<ArdourCanvas::SimpleLine *> (item);
-                       line->property_color_rgba() = (guint) ARDOUR_UI::config()->canvasvar_ZeroLine.get();;
+                       ArdourCanvas::Line *line = dynamic_cast<ArdourCanvas::Line *> (item);
+                       line->property_fill_color_rgba() = (guint) ARDOUR_UI::config()->canvasvar_ZeroLine.get();;
                }
                break;
 
@@ -1815,7 +1951,7 @@ Editor::left_automation_track ()
 }
 
 void
-Editor::scrub (nframes64_t frame, double current_x)
+Editor::scrub (framepos_t frame, double current_x)
 {
        double delta;
 
@@ -1846,7 +1982,7 @@ Editor::scrub (nframes64_t frame, double current_x)
                                scrub_reverse_distance = 0;
 
                                delta = 0.01 * (last_scrub_x - current_x);
-                               _session->request_transport_speed (_session->transport_speed() - delta);
+                               _session->request_transport_speed_nonzero (_session->transport_speed() - delta);
                        }
 
                } else {
@@ -1865,7 +2001,7 @@ Editor::scrub (nframes64_t frame, double current_x)
                                scrub_reverse_distance = 0;
 
                                delta = 0.01 * (current_x - last_scrub_x);
-                               _session->request_transport_speed (_session->transport_speed() + delta);
+                               _session->request_transport_speed_nonzero (_session->transport_speed() + delta);
                        }
                }
 
@@ -1896,6 +2032,8 @@ Editor::scrub (nframes64_t frame, double current_x)
 bool
 Editor::motion_handler (ArdourCanvas::Item* /*item*/, GdkEvent* event, bool from_autoscroll)
 {
+       _last_motion_y = event->motion.y;
+
        if (event->motion.is_hint) {
                gint x, y;
 
@@ -1928,11 +2066,15 @@ Editor::motion_handler (ArdourCanvas::Item* /*item*/, GdkEvent* event, bool from
                set_canvas_cursor ();
        }
 
+       if (_over_region_trim_target) {
+               set_canvas_cursor_for_region_view (event->motion.x, entered_regionview);
+       }
+
        bool handled = false;
        if (_drags->active ()) {
                handled = _drags->motion_handler (event, from_autoscroll);
        }
-       
+
        if (!handled) {
                return false;
        }
@@ -1941,8 +2083,8 @@ Editor::motion_handler (ArdourCanvas::Item* /*item*/, GdkEvent* event, bool from
        return true;
 }
 
-void
-Editor::remove_gain_control_point (ArdourCanvas::Item*item, GdkEvent* /*event*/)
+bool
+Editor::can_remove_control_point (ArdourCanvas::Item* item)
 {
        ControlPoint* control_point;
 
@@ -1951,18 +2093,24 @@ Editor::remove_gain_control_point (ArdourCanvas::Item*item, GdkEvent* /*event*/)
                /*NOTREACHED*/
        }
 
-       // We shouldn't remove the first or last gain point
-       if (control_point->line().is_last_point(*control_point) ||
-               control_point->line().is_first_point(*control_point)) {
-               return;
+       AutomationLine& line = control_point->line ();
+       if (dynamic_cast<AudioRegionGainLine*> (&line)) {
+               /* we shouldn't remove the first or last gain point in region gain lines */
+               if (line.is_last_point(*control_point) || line.is_first_point(*control_point)) {
+                       return false;
+               }
        }
 
-       control_point->line().remove_point (*control_point);
+       return true;
 }
 
 void
-Editor::remove_control_point (ArdourCanvas::Item* item, GdkEvent* /*event*/)
+Editor::remove_control_point (ArdourCanvas::Item* item)
 {
+       if (!can_remove_control_point (item)) {
+               return;
+       }
+
        ControlPoint* control_point;
 
        if ((control_point = reinterpret_cast<ControlPoint *> (item->get_data ("control_point"))) == 0) {
@@ -2006,7 +2154,7 @@ Editor::edit_note (ArdourCanvas::Item* item)
 
        d.run ();
 }
-       
+
 
 void
 Editor::visible_order_range (int* low, int* high) const
@@ -2046,166 +2194,26 @@ Editor::region_view_item_click (AudioRegionView& rv, GdkEventButton* event)
                        speed = rtv->track()->speed();
                }
 
-               nframes64_t where = get_preferred_edit_position();
+               framepos_t where = get_preferred_edit_position();
 
                if (where >= 0) {
 
                        if (Keyboard::modifier_state_equals (event->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::SecondaryModifier))) {
 
-                               align_region (rv.region(), SyncPoint, (nframes64_t) (where * speed));
+                               align_region (rv.region(), SyncPoint, (framepos_t) (where * speed));
 
                        } else if (Keyboard::modifier_state_equals (event->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 
-                               align_region (rv.region(), End, (nframes64_t) (where * speed));
+                               align_region (rv.region(), End, (framepos_t) (where * speed));
 
                        } else {
 
-                               align_region (rv.region(), Start, (nframes64_t) (where * speed));
+                               align_region (rv.region(), Start, (framepos_t) (where * speed));
                        }
                }
        }
 }
 
-void
-Editor::show_verbose_time_cursor (nframes64_t frame, double offset, double xpos, double ypos)
-{
-       char buf[128];
-       Timecode::Time timecode;
-       BBT_Time bbt;
-       int hours, mins;
-       nframes64_t frame_rate;
-       float secs;
-
-       if (_session == 0) {
-               return;
-       }
-
-       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);
-               break;
-
-       case AudioClock::Timecode:
-               _session->timecode_time (frame, timecode);
-               snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
-               break;
-
-       case AudioClock::MinSec:
-               /* XXX this is copied from show_verbose_duration_cursor() */
-               frame_rate = _session->frame_rate();
-               hours = frame / (frame_rate * 3600);
-               frame = frame % (frame_rate * 3600);
-               mins = frame / (frame_rate * 60);
-               frame = frame % (frame_rate * 60);
-               secs = (float) frame / (float) frame_rate;
-               snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%07.4f", hours, mins, secs);
-               break;
-
-       default:
-               snprintf (buf, sizeof(buf), "%" PRIi64, frame);
-               break;
-       }
-
-       if (xpos >= 0 && ypos >=0) {
-               set_verbose_canvas_cursor (buf, xpos + offset, ypos + offset);
-       } else {
-               set_verbose_canvas_cursor (buf, _drags->current_pointer_x() + offset - horizontal_position(), _drags->current_pointer_y() + offset - vertical_adjustment.get_value() + canvas_timebars_vsize);
-       }
-       show_verbose_canvas_cursor ();
-}
-
-void
-Editor::show_verbose_duration_cursor (nframes64_t start, nframes64_t end, double offset, double xpos, double ypos)
-{
-       char buf[128];
-       Timecode::Time timecode;
-       BBT_Time sbbt;
-       BBT_Time ebbt;
-       int hours, mins;
-       nframes64_t distance, frame_rate;
-       float secs;
-       Meter meter_at_start(_session->tempo_map().meter_at(start));
-
-       if (_session == 0) {
-               return;
-       }
-
-       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);
-
-               /* subtract */
-               /* XXX this computation won't work well if the
-               user makes a selection that spans any meter changes.
-               */
-
-               ebbt.bars -= sbbt.bars;
-               if (ebbt.beats >= sbbt.beats) {
-                       ebbt.beats -= sbbt.beats;
-               } else {
-                       ebbt.bars--;
-                       ebbt.beats =  int(meter_at_start.beats_per_bar()) + ebbt.beats - sbbt.beats;
-               }
-               if (ebbt.ticks >= sbbt.ticks) {
-                       ebbt.ticks -= sbbt.ticks;
-               } else {
-                       ebbt.beats--;
-                       ebbt.ticks = int(Meter::ticks_per_beat) + ebbt.ticks - sbbt.ticks;
-               }
-
-               snprintf (buf, sizeof (buf), "%02" PRIu32 "|%02" PRIu32 "|%02" PRIu32, ebbt.bars, ebbt.beats, ebbt.ticks);
-               break;
-
-       case AudioClock::Timecode:
-               _session->timecode_duration (end - start, timecode);
-               snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
-               break;
-
-       case AudioClock::MinSec:
-               /* XXX this stuff should be elsewhere.. */
-               distance = end - start;
-               frame_rate = _session->frame_rate();
-               hours = distance / (frame_rate * 3600);
-               distance = distance % (frame_rate * 3600);
-               mins = distance / (frame_rate * 60);
-               distance = distance % (frame_rate * 60);
-               secs = (float) distance / (float) frame_rate;
-               snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%07.4f", hours, mins, secs);
-               break;
-
-       default:
-               snprintf (buf, sizeof(buf), "%" PRIi64, end - start);
-               break;
-       }
-
-       if (xpos >= 0 && ypos >=0) {
-               set_verbose_canvas_cursor (buf, xpos + offset, ypos + offset);
-       }
-       else {
-               set_verbose_canvas_cursor (buf, _drags->current_pointer_x() + offset, _drags->current_pointer_y() + offset);
-       }
-
-       show_verbose_canvas_cursor ();
-}
-
 void
 Editor::collect_new_region_view (RegionView* rv)
 {
@@ -2232,141 +2240,14 @@ Editor::cancel_selection ()
 
 
 void
-Editor::single_contents_trim (RegionView& rv, nframes64_t frame_delta, bool left_direction, bool swap_direction)
-{
-       boost::shared_ptr<Region> region (rv.region());
-
-       if (region->locked()) {
-               return;
-       }
-
-       nframes64_t new_bound;
-
-       double speed = 1.0;
-       TimeAxisView* tvp = clicked_axisview;
-       RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
-
-       if (tv && tv->is_track()) {
-               speed = tv->track()->speed();
-       }
-
-       if (left_direction) {
-               if (swap_direction) {
-                       new_bound = (nframes64_t) (region->position()/speed) + frame_delta;
-               } else {
-                       new_bound = (nframes64_t) (region->position()/speed) - frame_delta;
-               }
-       } else {
-               if (swap_direction) {
-                       new_bound = (nframes64_t) (region->position()/speed) - frame_delta;
-               } else {
-                       new_bound = (nframes64_t) (region->position()/speed) + frame_delta;
-               }
-       }
-
-       region->trim_start ((nframes64_t) (new_bound * speed), this);
-       rv.region_changed (PropertyChange (ARDOUR::Properties::start));
-}
-
-void
-Editor::single_start_trim (RegionView& rv, nframes64_t new_bound, bool no_overlap)
-{
-       boost::shared_ptr<Region> region (rv.region());
-
-       if (region->locked()) {
-               return;
-       }
-
-       double speed = 1.0;
-       TimeAxisView* tvp = clicked_axisview;
-       RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
-
-       if (tv && tv->is_track()) {
-               speed = tv->track()->speed();
-       }
-
-       nframes64_t pre_trim_first_frame = region->first_frame();
-
-       region->trim_front ((nframes64_t) (new_bound * speed), this);
-
-       if (no_overlap) {
-               //Get the next region on the left of this region and shrink/expand it.
-               boost::shared_ptr<Playlist> playlist (region->playlist());
-               boost::shared_ptr<Region> region_left = playlist->find_next_region (pre_trim_first_frame, End, 0);
-
-               bool regions_touching = false;
-
-               if (region_left != 0 && (pre_trim_first_frame == region_left->last_frame() + 1)){
-                   regions_touching = true;
-               }
-
-               //Only trim region on the left if the first frame has gone beyond the left region's last frame.
-               if (region_left != 0 &&
-                       (region_left->last_frame() > region->first_frame() || regions_touching))
-               {
-                       region_left->trim_end(region->first_frame() - 1, this);
-               }
-       }
-
-       rv.region_changed (ARDOUR::bounds_change);
-}
-
-void
-Editor::single_end_trim (RegionView& rv, nframes64_t new_bound, bool no_overlap)
-{
-       boost::shared_ptr<Region> region (rv.region());
-
-       if (region->locked()) {
-               return;
-       }
-
-       double speed = 1.0;
-       TimeAxisView* tvp = clicked_axisview;
-       RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
-
-       if (tv && tv->is_track()) {
-               speed = tv->track()->speed();
-       }
-
-       nframes64_t pre_trim_last_frame = region->last_frame();
-
-       region->trim_end ((nframes64_t) (new_bound * speed), this);
-
-       if (no_overlap) {
-               //Get the next region on the right of this region and shrink/expand it.
-               boost::shared_ptr<Playlist> playlist (region->playlist());
-               boost::shared_ptr<Region> region_right = playlist->find_next_region (pre_trim_last_frame, Start, 1);
-
-               bool regions_touching = false;
-
-               if (region_right != 0 && (pre_trim_last_frame == region_right->first_frame() - 1)) {
-                       regions_touching = true;
-               }
-
-               //Only trim region on the right if the last frame has gone beyond the right region's first frame.
-               if (region_right != 0 &&
-                       (region_right->first_frame() < region->last_frame() || regions_touching))
-               {
-                       region_right->trim_front(region->last_frame() + 1, this);
-               }
-
-               rv.region_changed (ARDOUR::bounds_change);
-                       
-       } else {
-               rv.region_changed (PropertyChange (ARDOUR::Properties::length));
-       }
-}
-
-
-void
-Editor::point_trim (GdkEvent* event, nframes64_t new_bound)
+Editor::point_trim (GdkEvent* event, framepos_t new_bound)
 {
        RegionView* rv = clicked_regionview;
 
        /* Choose action dependant on which button was pressed */
        switch (event->button.button) {
        case 1:
-               begin_reversible_command (_("Start point trim"));
+               begin_reversible_command (_("start point trim"));
 
                if (selection->selected (rv)) {
                        for (list<RegionView*>::const_iterator i = selection->regions.by_layer().begin();
@@ -2377,16 +2258,16 @@ Editor::point_trim (GdkEvent* event, nframes64_t new_bound)
                                }
 
                                if (!(*i)->region()->locked()) {
-                                       (*i)->region()->clear_history ();
-                                       (*i)->region()->trim_front (new_bound, this);
+                                       (*i)->region()->clear_changes ();
+                                       (*i)->region()->trim_front (new_bound);
                                        _session->add_command(new StatefulDiffCommand ((*i)->region()));
                                }
                        }
 
                } else {
                        if (!rv->region()->locked()) {
-                               rv->region()->clear_history ();
-                               rv->region()->trim_front (new_bound, this);
+                               rv->region()->clear_changes ();
+                               rv->region()->trim_front (new_bound);
                                _session->add_command(new StatefulDiffCommand (rv->region()));
                        }
                }
@@ -2402,8 +2283,8 @@ Editor::point_trim (GdkEvent* event, nframes64_t new_bound)
                        for (list<RegionView*>::const_iterator i = selection->regions.by_layer().begin(); i != selection->regions.by_layer().end(); ++i)
                        {
                                if (!(*i)->region()->locked()) {
-                                       (*i)->region()->clear_history();
-                                       (*i)->region()->trim_end (new_bound, this);
+                                       (*i)->region()->clear_changes();
+                                       (*i)->region()->trim_end (new_bound);
                                        _session->add_command(new StatefulDiffCommand ((*i)->region()));
                                }
                        }
@@ -2411,8 +2292,8 @@ Editor::point_trim (GdkEvent* event, nframes64_t new_bound)
                } else {
 
                        if (!rv->region()->locked()) {
-                               rv->region()->clear_history ();
-                               rv->region()->trim_end (new_bound, this);
+                               rv->region()->clear_changes ();
+                               rv->region()->trim_end (new_bound);
                                _session->add_command (new StatefulDiffCommand (rv->region()));
                        }
                }
@@ -2425,24 +2306,6 @@ Editor::point_trim (GdkEvent* event, nframes64_t new_bound)
        }
 }
 
-void
-Editor::thaw_region_after_trim (RegionView& rv)
-{
-       boost::shared_ptr<Region> region (rv.region());
-
-       if (region->locked()) {
-               return;
-       }
-
-       region->resume_property_changes ();
-
-       AudioRegionView* arv = dynamic_cast<AudioRegionView*>(&rv);
-
-       if (arv) {
-               arv->unhide_envelope ();
-       }
-}
-
 void
 Editor::hide_marker (ArdourCanvas::Item* item, GdkEvent* /*event*/)
 {
@@ -2460,7 +2323,7 @@ Editor::hide_marker (ArdourCanvas::Item* item, GdkEvent* /*event*/)
 
 
 void
-Editor::reposition_zoom_rect (nframes64_t start, nframes64_t end)
+Editor::reposition_zoom_rect (framepos_t start, framepos_t end)
 {
        double x1 = frame_to_pixel (start);
        double x2 = frame_to_pixel (end);
@@ -2499,7 +2362,7 @@ Editor::mouse_rename_region (ArdourCanvas::Item* /*item*/, GdkEvent* /*event*/)
 
 
 void
-Editor::mouse_brush_insert_region (RegionView* rv, nframes64_t pos)
+Editor::mouse_brush_insert_region (RegionView* rv, framepos_t pos)
 {
        /* no brushing without a useful snap setting */
 
@@ -2533,9 +2396,9 @@ Editor::mouse_brush_insert_region (RegionView* rv, nframes64_t pos)
        boost::shared_ptr<Playlist> playlist = rtv->playlist();
        double speed = rtv->track()->speed();
 
-        playlist->clear_history ();
-       boost::shared_ptr<Region> new_region (RegionFactory::create (rv->region()));
-        playlist->add_region (new_region, (nframes64_t) (pos * speed));
+       playlist->clear_changes ();
+       boost::shared_ptr<Region> new_region (RegionFactory::create (rv->region(), true));
+       playlist->add_region (new_region, (framepos_t) (pos * speed));
        _session->add_command (new StatefulDiffCommand (playlist));
 
        // playlist is frozen, so we have to update manually XXX this is disgusting
@@ -2554,10 +2417,14 @@ Editor::track_height_step_timeout ()
 }
 
 void
-Editor::add_region_drag (ArdourCanvas::Item* item, GdkEvent* event, RegionView* region_view)
+Editor::add_region_drag (ArdourCanvas::Item* item, GdkEvent*, RegionView* region_view)
 {
        assert (region_view);
 
+       if (!region_view->region()->playlist()) {
+               return;
+       }
+
        _region_motion_group->raise_to_top ();
 
        if (Config->get_edit_mode() == Splice) {
@@ -2572,10 +2439,14 @@ Editor::add_region_drag (ArdourCanvas::Item* item, GdkEvent* event, RegionView*
 }
 
 void
-Editor::add_region_copy_drag (ArdourCanvas::Item* item, GdkEvent* event, RegionView* region_view)
+Editor::add_region_copy_drag (ArdourCanvas::Item* item, GdkEvent*, RegionView* region_view)
 {
        assert (region_view);
 
+       if (!region_view->region()->playlist()) {
+               return;
+       }
+
        _region_motion_group->raise_to_top ();
 
        RegionSelection s = get_equivalent_regions (selection->regions, ARDOUR::Properties::edit.property_id);
@@ -2583,10 +2454,14 @@ Editor::add_region_copy_drag (ArdourCanvas::Item* item, GdkEvent* event, RegionV
 }
 
 void
-Editor::add_region_brush_drag (ArdourCanvas::Item* item, GdkEvent* event, RegionView* region_view)
+Editor::add_region_brush_drag (ArdourCanvas::Item* item, GdkEvent*, RegionView* region_view)
 {
        assert (region_view);
 
+       if (!region_view->region()->playlist()) {
+               return;
+       }
+
        if (Config->get_edit_mode() == Splice) {
                return;
        }
@@ -2594,7 +2469,7 @@ Editor::add_region_brush_drag (ArdourCanvas::Item* item, GdkEvent* event, Region
        RegionSelection s = get_equivalent_regions (selection->regions, ARDOUR::Properties::edit.property_id);
        _drags->add (new RegionMoveDrag (this, item, region_view, s.by_layer(), true, false));
 
-       begin_reversible_command (_("Drag region brush"));
+       begin_reversible_command (Operations::drag_region_brush);
 }
 
 /** Start a grab where a time range is selected, track(s) are selected, and the
@@ -2635,11 +2510,11 @@ Editor::start_selection_grab (ArdourCanvas::Item* /*item*/, GdkEvent* event)
           creating the new region and another for moving it.
        */
 
-       begin_reversible_command (_("selection grab"));
+       begin_reversible_command (Operations::selection_grab);
 
        boost::shared_ptr<Playlist> playlist = clicked_axisview->playlist();
 
-        playlist->clear_history ();
+       playlist->clear_changes ();
        clicked_routeview->playlist()->add_region (region, selection->time[clicked_selection].start);
        _session->add_command(new StatefulDiffCommand (playlist));
 
@@ -2678,20 +2553,30 @@ Editor::set_internal_edit (bool yn)
        if (yn) {
                mouse_select_button.set_image (*(manage (new Image (::get_icon("midi_tool_pencil")))));
                mouse_select_button.get_image ()->show ();
-                ARDOUR_UI::instance()->set_tip (mouse_select_button, _("Draw/Edit MIDI Notes"));
-                set_canvas_cursor ();
+               ARDOUR_UI::instance()->set_tip (mouse_select_button, _("Draw/Edit MIDI Notes"));
+               mouse_mode_toggled (mouse_mode);
 
-               /* deselect everything to avoid confusion when e.g. we can't now cut a previously selected
-                  region because cut means "cut note" rather than "cut region".
-               */
-               selection->clear ();
+                pre_internal_mouse_mode = mouse_mode;
+
+                for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+                        (*i)->enter_internal_edit_mode ();
+                }
 
        } else {
 
                mouse_select_button.set_image (*(manage (new Image (::get_icon("tool_range")))));
                mouse_select_button.get_image ()->show ();
-                ARDOUR_UI::instance()->set_tip (mouse_select_button, _("Select/Move Ranges"));
-                mouse_mode_toggled (mouse_mode); // sets cursor
+               ARDOUR_UI::instance()->set_tip (mouse_select_button, _("Select/Move Ranges"));
+               mouse_mode_toggled (mouse_mode); // sets cursor
+
+                for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+                        (*i)->leave_internal_edit_mode ();
+                }
+
+                if (mouse_mode == MouseRange && pre_internal_mouse_mode != MouseRange) {
+                        /* we were drawing .. flip back to something sensible */
+                        set_mouse_mode (pre_internal_mouse_mode);
+                }
        }
 }
 
@@ -2699,18 +2584,18 @@ Editor::set_internal_edit (bool yn)
  *  used by the `join object/range' tool mode.
  */
 void
-Editor::update_join_object_range_location (double x, double y)
+Editor::update_join_object_range_location (double /*x*/, double y)
 {
        /* XXX: actually, this decides based on whether the mouse is in the top or bottom half of a RouteTimeAxisView;
           entered_{track,regionview} is not always setup (e.g. if the mouse is over a TimeSelection), and to get a Region
           that we're over requires searching the playlist.
        */
-          
+
        if (join_object_range_button.get_active() == false || (mouse_mode != MouseRange && mouse_mode != MouseObject)) {
                _join_object_range_state = JOIN_OBJECT_RANGE_NONE;
                return;
        }
-       
+
        if (mouse_mode == MouseObject) {
                _join_object_range_state = JOIN_OBJECT_RANGE_OBJECT;
        } else if (mouse_mode == MouseRange) {
@@ -2719,7 +2604,7 @@ Editor::update_join_object_range_location (double x, double y)
 
        /* XXX: maybe we should make entered_track work in all cases, rather than resorting to this */
        pair<TimeAxisView*, int> tvp = trackview_by_y_position (y + vertical_adjustment.get_value() - canvas_timebars_vsize);
-       
+
        if (tvp.first) {
 
                RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
@@ -2729,9 +2614,11 @@ Editor::update_join_object_range_location (double x, double y)
                        double cy = y;
                        rtv->canvas_display()->w2i (cx, cy);
 
-                       bool const top_half = cy < rtv->current_height () / 2;
-                       
-                       _join_object_range_state = top_half ? JOIN_OBJECT_RANGE_RANGE : JOIN_OBJECT_RANGE_OBJECT;
+                       double const c = cy / rtv->view()->child_height();
+                       double d;
+                       double const f = modf (c, &d);
+
+                       _join_object_range_state = f < 0.5 ? JOIN_OBJECT_RANGE_RANGE : JOIN_OBJECT_RANGE_OBJECT;
                }
        }
 }
@@ -2756,3 +2643,46 @@ Editor::remove_midi_note (ArdourCanvas::Item* item, GdkEvent *)
 
        e->region_view().delete_note (e->note ());
 }
+
+void
+Editor::set_canvas_cursor_for_region_view (double x, RegionView* rv)
+{
+       assert (rv);
+
+       ArdourCanvas::Group* g = rv->get_canvas_group ();
+       ArdourCanvas::Group* p = g->get_parent_group ();
+
+       /* Compute x in region view parent coordinates */
+       double dy = 0;
+       p->w2i (x, dy);
+
+       double x1, x2, y1, y2;
+       g->get_bounds (x1, y1, x2, y2);
+
+       /* Halfway across the region */
+       double const h = (x1 + x2) / 2;
+
+       Trimmable::CanTrim ct = rv->region()->can_trim ();
+       if (x <= h) {
+               if (ct & Trimmable::FrontTrimEarlier) {
+                       set_canvas_cursor (_cursors->left_side_trim);
+               } else {
+                       set_canvas_cursor (_cursors->left_side_trim_right_only);
+               }
+       } else {
+               if (ct & Trimmable::EndTrimLater) {
+                       set_canvas_cursor (_cursors->right_side_trim);
+               } else {
+                       set_canvas_cursor (_cursors->right_side_trim_left_only);
+               }
+       }
+}
+
+/** Obtain the pointer position in world coordinates */
+void
+Editor::get_pointer_position (double& x, double& y) const
+{
+       int px, py;
+       track_canvas->get_pointer (px, py);
+       track_canvas->window_to_world (px, py, x, y);
+}