Merge branch 'master' into cairocanvas
[ardour.git] / gtk2_ardour / editor_ops.cc
index 5f361ae1537bdd043984d350e0b8f42435c74f7b..c4f084170abd1f757dbbba3650fb18a82ebfaa23 100644 (file)
@@ -31,6 +31,7 @@
 #include "pbd/basename.h"
 #include "pbd/pthread_utils.h"
 #include "pbd/memento_command.h"
+#include "pbd/unwind.h"
 #include "pbd/whitespace.h"
 #include "pbd/stateful_diff_command.h"
 
 #include <gtkmm2ext/choice.h>
 #include <gtkmm2ext/popup.h>
 
-#include "ardour/audioengine.h"
-#include "ardour/session.h"
-#include "ardour/audioplaylist.h"
+#include "ardour/audio_track.h"
 #include "ardour/audioregion.h"
-#include "ardour/audio_diskstream.h"
-#include "ardour/utils.h"
+#include "ardour/dB.h"
 #include "ardour/location.h"
-#include "ardour/audio_track.h"
-#include "ardour/audioplaylist.h"
-#include "ardour/region_factory.h"
+#include "ardour/midi_region.h"
+#include "ardour/midi_track.h"
+#include "ardour/operations.h"
 #include "ardour/playlist_factory.h"
-#include "ardour/reverse.h"
-#include "ardour/transient_detector.h"
-#include "ardour/dB.h"
 #include "ardour/quantize.h"
+#include "ardour/region_factory.h"
+#include "ardour/reverse.h"
+#include "ardour/session.h"
+#include "ardour/session_playlists.h"
 #include "ardour/strip_silence.h"
-#include "ardour/route_group.h"
-#include "ardour/operations.h"
+#include "ardour/transient_detector.h"
+
+#include "canvas/canvas.h"
 
 #include "ardour_ui.h"
 #include "debug.h"
@@ -64,6 +64,7 @@
 #include "route_time_axis.h"
 #include "audio_time_axis.h"
 #include "automation_time_axis.h"
+#include "control_point.h"
 #include "streamview.h"
 #include "audio_streamview.h"
 #include "audio_region_view.h"
@@ -106,6 +107,10 @@ using Gtkmm2ext::Keyboard;
 void
 Editor::undo (uint32_t n)
 {
+       if (_drags->active ()) {
+               _drags->abort ();
+       }
+       
        if (_session) {
                _session->undo (n);
        }
@@ -114,6 +119,10 @@ Editor::undo (uint32_t n)
 void
 Editor::redo (uint32_t n)
 {
+       if (_drags->active ()) {
+               _drags->abort ();
+       }
+       
        if (_session) {
                _session->redo (n);
        }
@@ -146,7 +155,7 @@ Editor::split_regions_at (framepos_t where, RegionSelection& regions)
                }
        } else {
                snap_to (where);
-               
+
                frozen = true;
                EditorFreeze(); /* Emit Signal */
        }
@@ -198,7 +207,7 @@ Editor::split_regions_at (framepos_t where, RegionSelection& regions)
        }
 
        commit_reversible_command ();
-       
+
        if (frozen){
                EditorThaw(); /* Emit Signal */
        }
@@ -245,7 +254,7 @@ Editor::move_range_selection_start_or_end_to_region_boundary (bool move_end, boo
        if (end < start) {
                return;
        }
-       
+
        begin_reversible_command (_("alter selection"));
        selection->set_preserving_all_ranges (start, end);
        commit_reversible_command ();
@@ -300,7 +309,7 @@ Editor::nudge_forward (bool next, bool force_playhead)
                        }
 
                        r->clear_changes ();
-                       r->set_position (r->position() + distance, this);
+                       r->set_position (r->position() + distance);
                        _session->add_command (new StatefulDiffCommand (r));
                }
 
@@ -350,8 +359,8 @@ Editor::nudge_forward (bool next, bool force_playhead)
                commit_reversible_command ();
 
        } else {
-               distance = get_nudge_distance (playhead_cursor->current_frame, next_distance);
-               _session->request_locate (playhead_cursor->current_frame + distance);
+               distance = get_nudge_distance (playhead_cursor->current_frame (), next_distance);
+               _session->request_locate (playhead_cursor->current_frame () + distance);
        }
 }
 
@@ -379,13 +388,13 @@ Editor::nudge_backward (bool next, bool force_playhead)
                        if (next) {
                                distance = next_distance;
                        }
-                        
+
                        r->clear_changes ();
 
                        if (r->position() > distance) {
-                               r->set_position (r->position() - distance, this);
+                               r->set_position (r->position() - distance);
                        } else {
-                               r->set_position (0, this);
+                               r->set_position (0);
                        }
                        _session->add_command (new StatefulDiffCommand (r));
                }
@@ -439,10 +448,10 @@ Editor::nudge_backward (bool next, bool force_playhead)
 
        } else {
 
-               distance = get_nudge_distance (playhead_cursor->current_frame, next_distance);
+               distance = get_nudge_distance (playhead_cursor->current_frame (), next_distance);
 
-               if (playhead_cursor->current_frame > distance) {
-                       _session->request_locate (playhead_cursor->current_frame - distance);
+               if (playhead_cursor->current_frame () > distance) {
+                       _session->request_locate (playhead_cursor->current_frame () - distance);
                } else {
                        _session->goto_start();
                }
@@ -453,23 +462,23 @@ void
 Editor::nudge_forward_capture_offset ()
 {
        RegionSelection rs = get_regions_from_selection_and_entered ();
-       
+
        if (!_session || rs.empty()) {
                return;
        }
 
        begin_reversible_command (_("nudge forward"));
-       
+
        framepos_t const distance = _session->worst_output_latency();
-       
+
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                boost::shared_ptr<Region> r ((*i)->region());
-               
+
                r->clear_changes ();
-               r->set_position (r->position() + distance, this);
+               r->set_position (r->position() + distance);
                _session->add_command(new StatefulDiffCommand (r));
        }
-       
+
        commit_reversible_command ();
 }
 
@@ -482,23 +491,23 @@ Editor::nudge_backward_capture_offset ()
                return;
        }
 
-       begin_reversible_command (_("nudge forward"));
-       
+       begin_reversible_command (_("nudge backward"));
+
        framepos_t const distance = _session->worst_output_latency();
 
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                boost::shared_ptr<Region> r ((*i)->region());
-               
+
                r->clear_changes ();
-               
+
                if (r->position() > distance) {
-                       r->set_position (r->position() - distance, this);
+                       r->set_position (r->position() - distance);
                } else {
-                       r->set_position (0, this);
+                       r->set_position (0);
                }
                _session->add_command(new StatefulDiffCommand (r));
        }
-       
+
        commit_reversible_command ();
 }
 
@@ -554,11 +563,11 @@ Editor::build_region_boundary_cache ()
 
        TimeAxisView *ontrack = 0;
        TrackViewList tlist;
-
+       
        if (!selection->tracks.empty()) {
-               tlist = selection->tracks;
+               tlist = selection->tracks.filter_to_unique_playlists ();
        } else {
-               tlist = track_views;
+               tlist = track_views.filter_to_unique_playlists ();
        }
 
        while (pos < _session->current_end_frame() && !at_end) {
@@ -705,7 +714,7 @@ Editor::find_next_region_boundary (framepos_t pos, int32_t dir, const TrackViewL
        for (TrackViewList::const_iterator i = tracks.begin(); i != tracks.end(); ++i) {
                framepos_t contender;
                framecnt_t d;
-                
+
                RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
 
                if (!rtv) {
@@ -765,7 +774,7 @@ Editor::get_region_boundary (framepos_t pos, int32_t dir, bool with_selection, b
 void
 Editor::cursor_to_region_boundary (bool with_selection, int32_t dir)
 {
-       framepos_t pos = playhead_cursor->current_frame;
+       framepos_t pos = playhead_cursor->current_frame ();
        framepos_t target;
 
        if (!_session) {
@@ -800,7 +809,7 @@ void
 Editor::cursor_to_region_point (EditorCursor* cursor, RegionPoint point, int32_t dir)
 {
        boost::shared_ptr<Region> r;
-       framepos_t pos = cursor->current_frame;
+       framepos_t pos = cursor->current_frame ();
 
        if (!_session) {
                return;
@@ -1136,7 +1145,7 @@ Editor::selected_marker_to_selection_end ()
 void
 Editor::scroll_playhead (bool forward)
 {
-       framepos_t pos = playhead_cursor->current_frame;
+       framepos_t pos = playhead_cursor->current_frame ();
        framecnt_t delta = (framecnt_t) floor (current_page_frames() / 0.8);
 
        if (forward) {
@@ -1190,10 +1199,10 @@ Editor::cursor_align (bool playhead_to_edit)
                        Location* loc = find_location_from_marker (*i, ignored);
 
                        if (loc->is_mark()) {
-                               loc->set_start (playhead_cursor->current_frame);
+                               loc->set_start (playhead_cursor->current_frame ());
                        } else {
-                               loc->set (playhead_cursor->current_frame,
-                                         playhead_cursor->current_frame + loc->length());
+                               loc->set (playhead_cursor->current_frame (),
+                                         playhead_cursor->current_frame () + loc->length());
                        }
                }
        }
@@ -1202,7 +1211,7 @@ Editor::cursor_align (bool playhead_to_edit)
 void
 Editor::scroll_backward (float pages)
 {
-       framepos_t const one_page = (framepos_t) rint (_canvas_width * frames_per_unit);
+       framepos_t const one_page = (framepos_t) rint (_visible_canvas_width * frames_per_pixel);
        framepos_t const cnt = (framepos_t) floor (pages * one_page);
 
        framepos_t frame;
@@ -1218,7 +1227,7 @@ Editor::scroll_backward (float pages)
 void
 Editor::scroll_forward (float pages)
 {
-       framepos_t const one_page = (framepos_t) rint (_canvas_width * frames_per_unit);
+       framepos_t const one_page = (framepos_t) rint (_visible_canvas_width * frames_per_pixel);
        framepos_t const cnt = (framepos_t) floor (pages * one_page);
 
        framepos_t frame;
@@ -1235,10 +1244,10 @@ void
 Editor::scroll_tracks_down ()
 {
        double vert_value = vertical_adjustment.get_value() + vertical_adjustment.get_page_size();
-       if (vert_value > vertical_adjustment.get_upper() - _canvas_height) {
-               vert_value = vertical_adjustment.get_upper() - _canvas_height;
+       if (vert_value > vertical_adjustment.get_upper() - _visible_canvas_height) {
+               vert_value = vertical_adjustment.get_upper() - _visible_canvas_height;
        }
-       
+
        vertical_adjustment.set_value (vert_value);
 }
 
@@ -1253,10 +1262,10 @@ Editor::scroll_tracks_down_line ()
 {
        double vert_value = vertical_adjustment.get_value() + 60;
 
-       if (vert_value > vertical_adjustment.get_upper() - _canvas_height) {
-               vert_value = vertical_adjustment.get_upper() - _canvas_height;
+       if (vert_value > vertical_adjustment.get_upper() - _visible_canvas_height) {
+               vert_value = vertical_adjustment.get_upper() - _visible_canvas_height;
        }
-       
+
        vertical_adjustment.set_value (vert_value);
 }
 
@@ -1271,11 +1280,17 @@ Editor::scroll_tracks_up_line ()
 void
 Editor::tav_zoom_step (bool coarser)
 {
-       ENSURE_GUI_THREAD (*this, &Editor::temporal_zoom_step, coarser)
-
        _routes->suspend_redisplay ();
 
-       for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+       TrackViewList* ts;
+
+       if (selection->tracks.empty()) {
+               ts = &track_views;
+       } else {
+               ts = &selection->tracks;
+       }
+       
+       for (TrackViewList::iterator i = ts->begin(); i != ts->end(); ++i) {
                TimeAxisView *tv = (static_cast<TimeAxisView*>(*i));
                        tv->step_height (coarser);
        }
@@ -1283,28 +1298,78 @@ Editor::tav_zoom_step (bool coarser)
        _routes->resume_redisplay ();
 }
 
+void
+Editor::tav_zoom_smooth (bool coarser, bool force_all)
+{
+       _routes->suspend_redisplay ();
+
+       TrackViewList* ts;
+
+       if (selection->tracks.empty() || force_all) {
+               ts = &track_views;
+       } else {
+               ts = &selection->tracks;
+       }
+       
+       for (TrackViewList::iterator i = ts->begin(); i != ts->end(); ++i) {
+               TimeAxisView *tv = (static_cast<TimeAxisView*>(*i));
+               uint32_t h = tv->current_height ();
+
+               if (coarser) {
+                       if (h > 5) {
+                               h -= 5; // pixels
+                               if (h >= TimeAxisView::preset_height (HeightSmall)) {
+                                       tv->set_height (h);
+                               }
+                       }
+               } else {
+                       tv->set_height (h + 5);
+               }
+       }
+
+       _routes->resume_redisplay ();
+}
+
+bool
+Editor::clamp_frames_per_pixel (double& fpp) const
+{
+       bool clamped = false;
+       
+       if (fpp < 2.0) {
+               fpp = 2.0;
+               clamped = true;
+       }
+
+       if (max_framepos / fpp < 800) {
+               fpp = max_framepos / 800.0;
+               clamped = true;
+       }
+
+       return clamped;
+}
+
 void
 Editor::temporal_zoom_step (bool coarser)
 {
        ENSURE_GUI_THREAD (*this, &Editor::temporal_zoom_step, coarser)
 
-       double nfpu;
-
-       nfpu = frames_per_unit;
+       double nfpp = frames_per_pixel;
 
        if (coarser) {
-               nfpu *= 1.61803399;
+               nfpp = min (9e6, nfpp * 1.61803399);
        } else {
-               nfpu = max(1.0,(nfpu/1.61803399));
+               nfpp = max (1.0, nfpp / 1.61803399);
        }
 
-       temporal_zoom (nfpu);
+       temporal_zoom (nfpp);
 }
 
 void
-Editor::temporal_zoom (gdouble fpu)
+Editor::temporal_zoom (double fpp)
 {
-       if (!_session) return;
+       if (!_session) {
+               return;
+       }
 
        framepos_t current_page = current_page_frames();
        framepos_t current_leftmost = leftmost_frame;
@@ -1315,18 +1380,24 @@ Editor::temporal_zoom (gdouble fpu)
        framepos_t leftmost_after_zoom = 0;
        framepos_t where;
        bool in_track_canvas;
-       double nfpu;
+       double nfpp;
        double l;
 
-       /* XXX this limit is also in ::set_frames_per_unit() */
-
-       if (frames_per_unit <= 1.0 && fpu <= frames_per_unit) {
+       clamp_frames_per_pixel (fpp);
+       if (fpp == frames_per_pixel) {
                return;
        }
 
-       nfpu = fpu;
+       nfpp = fpp;
+       
+       // Imposing an arbitrary limit to zoom out as too much zoom out produces 
+       // segfaults for lack of memory. If somebody decides this is not high enough I
+       // believe it can be raisen to higher values but some limit must be in place.
+       if (nfpp > 8e+08) {
+               nfpp = 8e+08;
+       }
 
-       new_page_size = (framepos_t) floor (_canvas_width * nfpu);
+       new_page_size = (framepos_t) floor (_visible_canvas_width * nfpp);
        half_page_size = new_page_size / 2;
 
        switch (zoom_focus) {
@@ -1354,7 +1425,7 @@ Editor::temporal_zoom (gdouble fpu)
 
        case ZoomFocusPlayhead:
                /* centre playhead */
-               l = playhead_cursor->current_frame - (new_page_size * 0.5);
+               l = playhead_cursor->current_frame () - (new_page_size * 0.5);
 
                if (l < 0) {
                        leftmost_after_zoom = 0;
@@ -1370,7 +1441,7 @@ Editor::temporal_zoom (gdouble fpu)
 
                if (!mouse_frame (where, in_track_canvas)) {
                        /* use playhead instead */
-                       where = playhead_cursor->current_frame;
+                       where = playhead_cursor->current_frame ();
 
                        if (where < half_page_size) {
                                leftmost_after_zoom = 0;
@@ -1419,7 +1490,7 @@ Editor::temporal_zoom (gdouble fpu)
 
        // leftmost_after_zoom = min (leftmost_after_zoom, _session->current_end_frame());
 
-       reposition_and_zoom (leftmost_after_zoom, nfpu);
+       reposition_and_zoom (leftmost_after_zoom, nfpp);
 }
 
 void
@@ -1464,8 +1535,8 @@ Editor::temporal_zoom_region (bool both_axes)
        }
 
        framepos_t range = end - start;
-       double new_fpu = (double)range / (double)_canvas_width;
-       framepos_t extra_samples = (framepos_t) floor (one_centimeter_in_pixels * new_fpu);
+       double new_fpp = (double) range / (double) _visible_canvas_width;
+       framepos_t extra_samples = (framepos_t) floor (one_centimeter_in_pixels * new_fpp);
 
        if (start > extra_samples) {
                start -= extra_samples;
@@ -1479,18 +1550,17 @@ Editor::temporal_zoom_region (bool both_axes)
                end = max_framepos;
        }
 
-       if (both_axes) {
-               /* save visual state with track states included, and prevent
-                  set_frames_per_unit() from doing it again.
-               */
-               undo_visual_stack.push_back (current_visual_state(true));
-               no_save_visual = true;
-       }
+       /* if we're zooming on both axes we need to save track heights etc.
+        */
+
+       undo_visual_stack.push_back (current_visual_state (both_axes));
 
-       temporal_zoom_by_frame (start, end, "zoom to region");
+       PBD::Unwinder<bool> nsv (no_save_visual, true);
 
+       temporal_zoom_by_frame (start, end);
+       
        if (both_axes) {
-               uint32_t per_track_height = (uint32_t) floor ((_canvas_height - canvas_timebars_vsize - 10.0) / tracks.size());
+               uint32_t per_track_height = (uint32_t) floor ((_visible_canvas_height - 10.0) / tracks.size());
 
                /* set visible track heights appropriately */
 
@@ -1511,10 +1581,9 @@ Editor::temporal_zoom_region (bool both_axes)
                _routes->resume_redisplay ();
 
                vertical_adjustment.set_value (0.0);
-               no_save_visual = false;
        }
 
-       redo_visual_stack.push_back (current_visual_state());
+       redo_visual_stack.push_back (current_visual_state (both_axes));
 }
 
 void
@@ -1535,7 +1604,7 @@ Editor::temporal_zoom_selection ()
        framepos_t start = selection->time[clicked_selection].start;
        framepos_t end = selection->time[clicked_selection].end;
 
-       temporal_zoom_by_frame (start, end, "zoom to selection");
+       temporal_zoom_by_frame (start, end);
 }
 
 void
@@ -1550,12 +1619,12 @@ Editor::temporal_zoom_session ()
                        s = 0;
                }
                framecnt_t const e = _session->current_end_frame() + l * 0.01;
-               temporal_zoom_by_frame (framecnt_t (s), e, "zoom to _session");
+               temporal_zoom_by_frame (framecnt_t (s), e);
        }
 }
 
 void
-Editor::temporal_zoom_by_frame (framepos_t start, framepos_t end, const string & /*op*/)
+Editor::temporal_zoom_by_frame (framepos_t start, framepos_t end)
 {
        if (!_session) return;
 
@@ -1565,17 +1634,21 @@ Editor::temporal_zoom_by_frame (framepos_t start, framepos_t end, const string &
 
        framepos_t range = end - start;
 
-       double new_fpu = (double)range / (double)_canvas_width;
+       double const new_fpp = (double) range / (double) _visible_canvas_width;
 
-       framepos_t new_page = (framepos_t) floor (_canvas_width * new_fpu);
-       framepos_t middle = (framepos_t) floor( (double)start + ((double)range / 2.0f ));
-       framepos_t new_leftmost = (framepos_t) floor( (double)middle - ((double)new_page/2.0f));
+       framepos_t new_page = (framepos_t) floor (_visible_canvas_width * new_fpp);
+       framepos_t middle = (framepos_t) floor ((double) start + ((double) range / 2.0f));
+       framepos_t new_leftmost = (framepos_t) floor ((double) middle - ((double) new_page / 2.0f));
 
        if (new_leftmost > middle) {
                new_leftmost = 0;
        }
 
-       reposition_and_zoom (new_leftmost, new_fpu);
+       if (new_leftmost < 0) {
+               new_leftmost = 0;
+       }
+
+       reposition_and_zoom (new_leftmost, new_fpp);
 }
 
 void
@@ -1585,19 +1658,19 @@ Editor::temporal_zoom_to_frame (bool coarser, framepos_t frame)
                return;
        }
        double range_before = frame - leftmost_frame;
-       double new_fpu;
+       double new_fpp;
 
-       new_fpu = frames_per_unit;
+       new_fpp = frames_per_pixel;
 
        if (coarser) {
-               new_fpu *= 1.61803399;
+               new_fpp *= 1.61803399;
                range_before *= 1.61803399;
        } else {
-               new_fpu = max(1.0,(new_fpu/1.61803399));
+               new_fpp = max(1.0,(new_fpp/1.61803399));
                range_before /= 1.61803399;
        }
 
-       if (new_fpu == frames_per_unit)  {
+       if (new_fpp == frames_per_pixel)  {
                return;
        }
 
@@ -1611,7 +1684,7 @@ Editor::temporal_zoom_to_frame (bool coarser, framepos_t frame)
                new_leftmost = 0;
        }
 
-       reposition_and_zoom (new_leftmost, new_fpu);
+       reposition_and_zoom (new_leftmost, new_fpp);
 }
 
 
@@ -1709,7 +1782,7 @@ void
 Editor::add_locations_from_region ()
 {
        RegionSelection rs = get_regions_from_selection_and_entered ();
-       
+
        if (rs.empty()) {
                return;
        }
@@ -1736,7 +1809,7 @@ void
 Editor::add_location_from_region ()
 {
        RegionSelection rs = get_regions_from_selection_and_entered ();
-       
+
        if (rs.empty()) {
                return;
        }
@@ -1776,13 +1849,13 @@ Editor::jump_forward_to_mark ()
                return;
        }
 
-       Location *location = _session->locations()->first_location_after (playhead_cursor->current_frame);
+       framepos_t pos = _session->locations()->first_mark_after (playhead_cursor->current_frame());
 
-       if (location) {
-               _session->request_locate (location->start(), _session->transport_rolling());
-       } else {
-               _session->request_locate (_session->current_end_frame());
+       if (pos < 0) {
+               return;
        }
+       
+       _session->request_locate (pos, _session->transport_rolling());
 }
 
 void
@@ -1792,13 +1865,13 @@ Editor::jump_backward_to_mark ()
                return;
        }
 
-       Location *location = _session->locations()->first_location_before (playhead_cursor->current_frame);
+       framepos_t pos = _session->locations()->first_mark_before (playhead_cursor->current_frame());
 
-       if (location) {
-               _session->request_locate (location->start(), _session->transport_rolling());
-       } else {
-               _session->goto_start ();
+       if (pos < 0) {
+               return;
        }
+
+       _session->request_locate (pos, _session->transport_rolling());
 }
 
 void
@@ -1808,11 +1881,11 @@ Editor::set_mark ()
 
        string markername;
        _session->locations()->next_available_name (markername, "mark");
-       
+
        if (!choose_new_marker_name (markername)) {
                return;
        }
-       
+
        _session->locations()->add (new Location (*_session, pos, 0, markername, Location::IsMark), true);
 }
 
@@ -1838,11 +1911,13 @@ Editor::clear_ranges ()
 
                Location * looploc = _session->locations()->auto_loop_location();
                Location * punchloc = _session->locations()->auto_punch_location();
+               Location * sessionloc = _session->locations()->session_range_location();
 
                _session->locations()->clear_ranges ();
                // re-add these
                if (looploc) _session->locations()->add (looploc);
                if (punchloc) _session->locations()->add (punchloc);
+               if (sessionloc) _session->locations()->add (sessionloc);
 
                XMLNode &after = _session->locations()->get_state();
                _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
@@ -1895,7 +1970,7 @@ Editor::insert_region_list_drag (boost::shared_ptr<Region> region, int x, int y)
        RouteTimeAxisView *rtv = 0;
        boost::shared_ptr<Playlist> playlist;
 
-       track_canvas->window_to_world (x, y, wx, wy);
+       _track_canvas_viewport->window_to_canvas (x, y, wx, wy);
 
        GdkEvent event;
        event.type = GDK_BUTTON_RELEASE;
@@ -1936,20 +2011,17 @@ Editor::insert_route_list_drag (boost::shared_ptr<Route> route, int x, int y)
 {
        double wx, wy;
        double cx, cy;
-       framepos_t where;
        RouteTimeAxisView *dest_rtv = 0;
        RouteTimeAxisView *source_rtv = 0;
 
-       track_canvas->window_to_world (x, y, wx, wy);
-       wx += horizontal_position ();
-       wy += vertical_adjustment.get_value();
+       _track_canvas_viewport->window_to_canvas (x, y, wx, wy);
 
        GdkEvent event;
        event.type = GDK_BUTTON_RELEASE;
        event.button.x = wx;
        event.button.y = wy;
 
-       where = event_frame (&event, &cx, &cy);
+       event_frame (&event, &cx, &cy);
 
        std::pair<TimeAxisView*, int> const tv = trackview_by_y_position (cy);
        if (tv.first == 0) {
@@ -2035,7 +2107,7 @@ Editor::transition_to_rolling (bool fwd)
        }
 
        if (_session->config.get_external_sync()) {
-               switch (_session->config.get_sync_source()) {
+               switch (Config->get_sync_source()) {
                case JACK:
                        break;
                default:
@@ -2098,6 +2170,55 @@ Editor::play_selection ()
        _session->request_play_range (&selection->time, true);
 }
 
+framepos_t
+Editor::get_preroll ()
+{
+       return 1.0 /*Config->get_edit_preroll_seconds()*/ * _session->frame_rate();
+}
+
+
+void
+Editor::maybe_locate_with_edit_preroll ( framepos_t location )
+{
+       if ( _session->transport_rolling() || !Config->get_always_play_range() )
+               return;
+
+       location -= get_preroll();
+       
+       //don't try to locate before the beginning of time
+       if ( location < 0 ) 
+               location = 0;
+               
+       //if follow_playhead is on, keep the playhead on the screen
+       if ( _follow_playhead )
+               if ( location < leftmost_frame ) 
+                       location = leftmost_frame;
+
+       _session->request_locate( location );
+}
+
+void
+Editor::play_with_preroll ()
+{
+       if (selection->time.empty()) {
+               return;
+       } else {
+               framepos_t preroll = get_preroll();
+               
+               framepos_t start = 0;
+               if (selection->time[clicked_selection].start > preroll)
+                       start = selection->time[clicked_selection].start - preroll;
+               
+               framepos_t end = selection->time[clicked_selection].end + preroll;
+               
+               AudioRange ar (start, end, 0);
+               list<AudioRange> lar;
+               lar.push_back (ar);
+
+               _session->request_play_range (&lar, true);
+       }
+}
+
 void
 Editor::play_location (Location& location)
 {
@@ -2126,28 +2247,101 @@ Editor::loop_location (Location& location)
        }
 }
 
+void
+Editor::do_layer_operation (LayerOperation op)
+{
+       if (selection->regions.empty ()) {
+               return;
+       }
+
+       bool const multiple = selection->regions.size() > 1;
+       switch (op) {
+       case Raise:
+               if (multiple) {
+                       begin_reversible_command (_("raise regions"));
+               } else {
+                       begin_reversible_command (_("raise region"));
+               }
+               break;
+
+       case RaiseToTop:
+               if (multiple) {
+                       begin_reversible_command (_("raise regions to top"));
+               } else {
+                       begin_reversible_command (_("raise region to top"));
+               }
+               break;
+               
+       case Lower:
+               if (multiple) {
+                       begin_reversible_command (_("lower regions"));
+               } else {
+                       begin_reversible_command (_("lower region"));
+               }
+               break;
+               
+       case LowerToBottom:
+               if (multiple) {
+                       begin_reversible_command (_("lower regions to bottom"));
+               } else {
+                       begin_reversible_command (_("lower region"));
+               }
+               break;
+       }
+
+       set<boost::shared_ptr<Playlist> > playlists = selection->regions.playlists ();
+       for (set<boost::shared_ptr<Playlist> >::iterator i = playlists.begin(); i != playlists.end(); ++i) {
+               (*i)->clear_owned_changes ();
+       }
+       
+       for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
+               boost::shared_ptr<Region> r = (*i)->region ();
+               switch (op) {
+               case Raise:
+                       r->raise ();
+                       break;
+               case RaiseToTop:
+                       r->raise_to_top ();
+                       break;
+               case Lower:
+                       r->lower ();
+                       break;
+               case LowerToBottom:
+                       r->lower_to_bottom ();
+               }
+       }
+
+       for (set<boost::shared_ptr<Playlist> >::iterator i = playlists.begin(); i != playlists.end(); ++i) {
+               vector<Command*> cmds;
+               (*i)->rdiff (cmds);
+               _session->add_commands (cmds);
+       }
+       
+       commit_reversible_command ();
+}
+
 void
 Editor::raise_region ()
 {
-       selection->foreach_region (&Region::raise);
+       do_layer_operation (Raise);
 }
 
 void
 Editor::raise_region_to_top ()
 {
-       selection->foreach_region (&Region::raise_to_top);
+       do_layer_operation (RaiseToTop);
 }
 
 void
 Editor::lower_region ()
 {
-       selection->foreach_region (&Region::lower);
+       do_layer_operation (Lower);
 }
 
 void
 Editor::lower_region_to_bottom ()
 {
-       selection->foreach_region (&Region::lower_to_bottom);
+       do_layer_operation (LowerToBottom);
 }
 
 /** Show the region editor for the selected regions */
@@ -2168,7 +2362,7 @@ void
 Editor::rename_region ()
 {
        RegionSelection rs = get_regions_from_selection_and_entered ();
-       
+
        if (rs.empty()) {
                return;
        }
@@ -2191,7 +2385,7 @@ Editor::rename_region ()
        d.set_size_request (300, -1);
        d.set_position (Gtk::WIN_POS_MOUSE);
 
-       entry.set_text (selection->regions.front()->region()->name());
+       entry.set_text (rs.front()->region()->name());
        entry.select_region (0, -1);
 
        entry.signal_activate().connect (sigc::bind (sigc::mem_fun (d, &Dialog::response), RESPONSE_OK));
@@ -2207,7 +2401,7 @@ Editor::rename_region ()
        if (ret != RESPONSE_OK) {
                return;
        }
-       
+
        std::string str = entry.get_text();
        strip_whitespace_edges (str);
        if (!str.empty()) {
@@ -2253,7 +2447,7 @@ Editor::play_selected_region ()
        framepos_t end = 0;
 
        RegionSelection rs = get_regions_from_selection_and_entered ();
-       
+
        if (rs.empty()) {
                return;
        }
@@ -2311,8 +2505,8 @@ Editor::region_from_selection ()
                internal_start = start - current->position();
                RegionFactory::region_name (new_name, current->name(), true);
 
-               PropertyList plist; 
-               
+               PropertyList plist;
+
                plist.add (ARDOUR::Properties::start, current->start() + internal_start);
                plist.add (ARDOUR::Properties::length, selection_cnt);
                plist.add (ARDOUR::Properties::name, new_name);
@@ -2332,9 +2526,10 @@ Editor::create_region_from_selection (vector<boost::shared_ptr<Region> >& new_re
        framepos_t start = selection->time[clicked_selection].start;
        framepos_t end = selection->time[clicked_selection].end;
 
-       sort_track_selection ();
+       TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
+       sort_track_selection (ts);
 
-       for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+       for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
                boost::shared_ptr<Region> current;
                boost::shared_ptr<Playlist> playlist;
                framepos_t internal_start;
@@ -2351,8 +2546,8 @@ Editor::create_region_from_selection (vector<boost::shared_ptr<Region> >& new_re
                internal_start = start - current->position();
                RegionFactory::region_name (new_name, current->name(), true);
 
-               PropertyList plist; 
-               
+               PropertyList plist;
+
                plist.add (ARDOUR::Properties::start, current->start() + internal_start);
                plist.add (ARDOUR::Properties::length, end - start + 1);
                plist.add (ARDOUR::Properties::name, new_name);
@@ -2365,7 +2560,7 @@ void
 Editor::split_multichannel_region ()
 {
        RegionSelection rs = get_regions_from_selection_and_entered ();
-       
+
        if (rs.empty()) {
                return;
        }
@@ -2388,7 +2583,7 @@ static void
 add_if_covered (RegionView* rv, const AudioRange* ar, RegionSelection* rs)
 {
        switch (rv->region()->coverage (ar->start, ar->end - 1)) {
-       case OverlapNone:
+       case Evoral::OverlapNone:
                break;
        default:
                rs->push_back (rv);
@@ -2430,7 +2625,7 @@ Editor::get_tracks_for_range_action () const
                t = selection->tracks;
        }
 
-       return t;
+       return t.filter_to_unique_playlists();
 }
 
 void
@@ -2441,7 +2636,7 @@ Editor::separate_regions_between (const TimeSelection& ts)
        RegionSelection new_selection;
 
        TrackViewList tmptracks = get_tracks_for_range_action ();
-       sort_track_selection (&tmptracks);
+       sort_track_selection (tmptracks);
 
        for (TrackSelection::iterator i = tmptracks.begin(); i != tmptracks.end(); ++i) {
 
@@ -2483,12 +2678,12 @@ Editor::separate_regions_between (const TimeSelection& ts)
                                                        rtv->view()->foreach_regionview (sigc::bind (
                                                                                sigc::ptr_fun (add_if_covered),
                                                                                &(*t), &new_selection));
-                                                       
+
                                                        if (!in_command) {
                                                                begin_reversible_command (_("separate"));
                                                                in_command = true;
                                                        }
-                                                        
+
                                                        /* pick up changes to existing regions */
 
                                                        vector<Command*> cmds;
@@ -2531,7 +2726,7 @@ Editor::separate_region_from_selection ()
           returns a single range.
        */
 
-       if (mouse_mode == MouseRange && !selection->time.empty()) {
+       if (!selection->time.empty()) {
 
                separate_regions_between (selection->time);
 
@@ -2591,7 +2786,7 @@ Editor::separate_under_selected_regions ()
        vector<PlaylistState> playlists;
 
        RegionSelection rs;
-       
+
        rs = get_regions_from_selection_and_entered();
 
        if (!_session || rs.empty()) {
@@ -2645,7 +2840,7 @@ Editor::separate_under_selected_regions ()
 
                //Partition on the region bounds
                playlist->partition ((*rl)->first_frame() - 1, (*rl)->last_frame() + 1, true);
-               
+
                //Re-add region that was just removed due to the partition operation
                playlist->add_region( (*rl), (*rl)->first_frame() );
        }
@@ -2684,16 +2879,17 @@ Editor::crop_region_to (framepos_t start, framepos_t end)
 {
        vector<boost::shared_ptr<Playlist> > playlists;
        boost::shared_ptr<Playlist> playlist;
-       TrackViewList* ts;
+       TrackViewList ts;
 
        if (selection->tracks.empty()) {
-               ts = &track_views;
+               ts = track_views.filter_to_unique_playlists();
        } else {
-               sort_track_selection ();
-               ts = &selection->tracks;
+               ts = selection->tracks.filter_to_unique_playlists ();
        }
 
-       for (TrackSelection::iterator i = ts->begin(); i != ts->end(); ++i) {
+       sort_track_selection (ts);
+
+       for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
 
                RouteTimeAxisView* rtv;
 
@@ -2744,7 +2940,7 @@ Editor::crop_region_to (framepos_t start, framepos_t end)
                cnt = the_end - the_start + 1;
 
                region->clear_changes ();
-               region->trim_to (the_start, cnt, this);
+               region->trim_to (the_start, cnt);
                _session->add_command (new StatefulDiffCommand (region));
        }
 
@@ -2818,7 +3014,9 @@ Editor::region_fill_selection ()
 
        begin_reversible_command (Operations::fill_selection);
 
-       for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+       TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
+
+       for (TrackViewList::iterator i = ts.begin(); i != ts.end(); ++i) {
 
                if ((playlist = (*i)->playlist()) == 0) {
                        continue;
@@ -2871,20 +3069,20 @@ void
 Editor::remove_region_sync ()
 {
        RegionSelection rs = get_regions_from_selection_and_entered ();
-       
+
        if (rs.empty()) {
                return;
        }
 
        begin_reversible_command (_("remove region sync"));
-       
+
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 
                (*i)->region()->clear_changes ();
                (*i)->region()->clear_sync_position ();
                _session->add_command(new StatefulDiffCommand ((*i)->region()));
        }
-       
+
        commit_reversible_command ();
 }
 
@@ -2902,13 +3100,13 @@ Editor::naturalize_region ()
        } else {
                begin_reversible_command (_("move region to original position"));
        }
-               
+
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                (*i)->region()->clear_changes ();
-               (*i)->region()->move_to_natural_position (this);
+               (*i)->region()->move_to_natural_position ();
                _session->add_command (new StatefulDiffCommand ((*i)->region()));
        }
-       
+
        commit_reversible_command ();
 }
 
@@ -2916,7 +3114,7 @@ void
 Editor::align_regions (RegionPoint what)
 {
        RegionSelection const rs = get_regions_from_selection_and_edit_point ();
-       
+
        if (rs.empty()) {
                return;
        }
@@ -2942,7 +3140,7 @@ void
 Editor::align_regions_relative (RegionPoint point)
 {
        RegionSelection const rs = get_regions_from_selection_and_edit_point ();
-       
+
        if (rs.empty()) {
                return;
        }
@@ -3000,7 +3198,7 @@ Editor::align_regions_relative (RegionPoint point)
        /* move first one specially */
 
        r->clear_changes ();
-       r->set_position (pos, this);
+       r->set_position (pos);
        _session->add_command(new StatefulDiffCommand (r));
 
        /* move rest by the same amount */
@@ -3014,11 +3212,11 @@ Editor::align_regions_relative (RegionPoint point)
                region->clear_changes ();
 
                if (dir > 0) {
-                       region->set_position (region->position() + distance, this);
+                       region->set_position (region->position() + distance);
                } else {
-                       region->set_position (region->position() - distance, this);
+                       region->set_position (region->position() - distance);
                }
-                
+
                _session->add_command(new StatefulDiffCommand (region));
 
        }
@@ -3041,17 +3239,17 @@ Editor::align_region_internal (boost::shared_ptr<Region> region, RegionPoint poi
 
        switch (point) {
        case SyncPoint:
-               region->set_position (region->adjust_to_sync (position), this);
+               region->set_position (region->adjust_to_sync (position));
                break;
 
        case End:
                if (position > region->length()) {
-                       region->set_position (position - region->length(), this);
+                       region->set_position (position - region->length());
                }
                break;
 
        case Start:
-               region->set_position (position, this);
+               region->set_position (position);
                break;
        }
 
@@ -3076,28 +3274,25 @@ Editor::trim_region (bool front)
        framepos_t where = get_preferred_edit_position();
        RegionSelection rs = get_regions_from_selection_and_edit_point ();
 
-       cerr << "trim regions\n";
-
        if (rs.empty()) {
-               cerr << " no regions\n";
                return;
        }
 
-       cerr << "where = " << where << endl;
-
        begin_reversible_command (front ? _("trim front") : _("trim back"));
 
        for (list<RegionView*>::const_iterator i = rs.by_layer().begin(); i != rs.by_layer().end(); ++i) {
                if (!(*i)->region()->locked()) {
-                        
+
                        (*i)->region()->clear_changes ();
-                       
+
                        if (front) {
-                               (*i)->region()->trim_front (where, this);
+                               (*i)->region()->trim_front (where);
+                               maybe_locate_with_edit_preroll ( where );
                        } else {
-                               (*i)->region()->trim_end (where, this);
+                               (*i)->region()->trim_end (where);
+                               maybe_locate_with_edit_preroll ( where );
                        }
-                       
+
                        _session->add_command (new StatefulDiffCommand ((*i)->region()));
                }
        }
@@ -3138,7 +3333,7 @@ Editor::trim_region_to_location (const Location& loc, const char* str)
 
                /* require region to span proposed trim */
                switch (rv->region()->coverage (loc.start(), loc.end())) {
-               case OverlapInternal:
+               case Evoral::OverlapInternal:
                        break;
                default:
                        continue;
@@ -3159,9 +3354,9 @@ Editor::trim_region_to_location (const Location& loc, const char* str)
 
                start = session_frame_to_track_frame (loc.start(), speed);
                end = session_frame_to_track_frame (loc.end(), speed);
-                
+
                rv->region()->clear_changes ();
-               rv->region()->trim_to (start, (end - start), this);
+               rv->region()->trim_to (start, (end - start));
                _session->add_command(new StatefulDiffCommand (rv->region()));
        }
 
@@ -3223,7 +3418,7 @@ Editor::trim_to_region(bool forward)
                        continue;
                    }
 
-                   region->trim_end((framepos_t) ( (next_region->first_frame() - 1) * speed), this);
+                   region->trim_end((framepos_t) ( (next_region->first_frame() - 1) * speed));
                    arv->region_changed (PropertyChange (ARDOUR::Properties::length));
                }
                else {
@@ -3234,7 +3429,7 @@ Editor::trim_to_region(bool forward)
                        continue;
                    }
 
-                   region->trim_front((framepos_t) ((next_region->last_frame() + 1) * speed), this);
+                   region->trim_front((framepos_t) ((next_region->last_frame() + 1) * speed));
 
                    arv->region_changed (ARDOUR::bounds_change);
                }
@@ -3258,41 +3453,72 @@ Editor::unfreeze_route ()
 void*
 Editor::_freeze_thread (void* arg)
 {
-       SessionEvent::create_per_thread_pool ("freeze events", 64);
-
        return static_cast<Editor*>(arg)->freeze_thread ();
 }
 
 void*
 Editor::freeze_thread ()
 {
+       /* create event pool because we may need to talk to the session */
+       SessionEvent::create_per_thread_pool ("freeze events", 64);
+       /* create per-thread buffers for process() tree to use */
+       current_interthread_info->process_thread.get_buffers ();
        clicked_routeview->audio_track()->freeze_me (*current_interthread_info);
        current_interthread_info->done = true;
+       current_interthread_info->process_thread.drop_buffers();
        return 0;
 }
 
 void
 Editor::freeze_route ()
 {
-       if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
+       if (!_session) {
                return;
        }
 
-       if (!clicked_routeview->track()->bounceable()) {
-               RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (clicked_routeview);
-               if (rtv && !rtv->track()->bounceable()) {
-                       MessageDialog d (
-                               _("This route cannot be frozen because it has more outputs than inputs.  "
-                                 "You can fix this by increasing the number of inputs.")
-                               );
-                       d.set_title (_("Cannot freeze"));
-                       d.run ();
-                       return;
-               }
-       }
+       /* stop transport before we start. this is important */
 
-       InterThreadInfo itt;
-       current_interthread_info = &itt;
+       _session->request_transport_speed (0.0);
+       
+       /* wait for just a little while, because the above call is asynchronous */
+
+       ::usleep (250000);
+
+       if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
+               return;
+       }
+
+       if (!clicked_routeview->track()->bounceable (clicked_routeview->track()->main_outs(), true)) {
+               MessageDialog d (
+                       _("This track/bus cannot be frozen because the signal adds or loses channels before reaching the outputs.\n"
+                         "This is typically caused by plugins that generate stereo output from mono input or vice versa.")
+                       );
+               d.set_title (_("Cannot freeze"));
+               d.run ();
+               return;
+       }
+
+       if (clicked_routeview->track()->has_external_redirects()) {
+               MessageDialog d (string_compose (_("<b>%1</b>\n\nThis track has at least one send/insert/return as part of its signal flow.\n\n"
+                                                  "Freezing will only process the signal as far as the first send/insert/return."),
+                                                clicked_routeview->track()->name()), true, MESSAGE_INFO, BUTTONS_NONE, true);
+
+               d.add_button (_("Freeze anyway"), Gtk::RESPONSE_OK);
+               d.add_button (_("Don't freeze"), Gtk::RESPONSE_CANCEL);
+               d.set_title (_("Freeze Limits"));
+
+               int response = d.run ();
+
+               switch (response) {
+               case Gtk::RESPONSE_CANCEL:
+                       return;
+               default:
+                       break;
+               }
+       }
+
+       InterThreadInfo itt;
+       current_interthread_info = &itt;
 
        InterthreadProgressWindow ipw (current_interthread_info, _("Freeze"), _("Cancel Freeze"));
 
@@ -3318,15 +3544,21 @@ Editor::bounce_range_selection (bool replace, bool enable_processing)
        TrackSelection views = selection->tracks;
 
        for (TrackViewList::iterator i = views.begin(); i != views.end(); ++i) {
-               RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
-               if (rtv && rtv->track() && !rtv->track()->bounceable()) {
-                       MessageDialog d (
-                               _("One or more selected tracks cannot be bounced because it has more outputs than inputs.  "
-                                 "You can fix this by increasing the number of inputs on that track.")
-                               );
-                       d.set_title (_("Cannot bounce"));
-                       d.run ();
-                       return;
+
+               if (enable_processing) {
+
+                       RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
+
+                       if (rtv && rtv->track() && replace && enable_processing && !rtv->track()->bounceable (rtv->track()->main_outs(), false)) {
+                               MessageDialog d (
+                                       _("You can't perform this operation because the processing of the signal "
+                                         "will cause one or more of the tracks to end up with a region with more channels than this track has inputs.\n\n"
+                                         "You can do this without processing, which is a different operation.")
+                                       );
+                               d.set_title (_("Cannot bounce"));
+                               d.run ();
+                               return;
+                       }
                }
        }
 
@@ -3354,8 +3586,18 @@ Editor::bounce_range_selection (bool replace, bool enable_processing)
 
                playlist->clear_changes ();
                playlist->clear_owned_changes ();
-               
-               boost::shared_ptr<Region> r = rtv->track()->bounce_range (start, start+cnt, itt, enable_processing);
+
+               boost::shared_ptr<Region> r;
+
+               if (enable_processing) {
+                       r = rtv->track()->bounce_range (start, start+cnt, itt, rtv->track()->main_outs(), false);
+               } else {
+                       r = rtv->track()->bounce_range (start, start+cnt, itt, boost::shared_ptr<Processor>(), false);
+               }
+
+               if (!r) {
+                       continue;
+               }
 
                if (replace) {
                        list<AudioRange> ranges;
@@ -3374,6 +3616,13 @@ Editor::bounce_range_selection (bool replace, bool enable_processing)
        commit_reversible_command ();
 }
 
+/** Delete selected regions, automation points or a time range */
+void
+Editor::delete_ ()
+{
+       cut_copy (Delete);
+}
+
 /** Cut selected regions, automation points or a time range */
 void
 Editor::cut ()
@@ -3393,7 +3642,7 @@ Editor::copy ()
 bool
 Editor::can_cut_copy () const
 {
-       switch (current_mouse_mode()) {
+       switch (effective_mouse_mode()) {
 
        case MouseObject:
                if (!selection->regions.empty() || !selection->points.empty()) {
@@ -3426,6 +3675,9 @@ Editor::cut_copy (CutCopyOp op)
        string opname;
 
        switch (op) {
+       case Delete:
+               opname = _("delete");
+               break;
        case Cut:
                opname = _("cut");
                break;
@@ -3443,13 +3695,14 @@ Editor::cut_copy (CutCopyOp op)
           this function.
        */
 
-       if (op == Cut || op == Clear) {
+       if (op == Delete || op == Cut || op == Clear) {
                if (_drags->active ()) {
                        _drags->abort ();
                }
        }
 
-       cut_buffer->clear ();
+       if ( op != Clear )  //"Delete" doesn't change copy/paste buf
+               cut_buffer->clear ();
 
        if (entered_marker) {
 
@@ -3468,7 +3721,7 @@ Editor::cut_copy (CutCopyOp op)
 
        if (internal_editing()) {
 
-               switch (current_mouse_mode()) {
+               switch (effective_mouse_mode()) {
                case MouseObject:
                case MouseRange:
                        cut_copy_midi (op);
@@ -3479,24 +3732,63 @@ Editor::cut_copy (CutCopyOp op)
 
        } else {
 
-               RegionSelection rs;
+       RegionSelection rs; 
 
-               /* we only want to cut regions if some are selected */
+       /* we only want to cut regions if some are selected */
 
-               if (!selection->regions.empty()) {
-                       rs = selection->regions;
-               }
+       if (!selection->regions.empty()) {
+               rs = selection->regions;
+       }
 
-               switch (current_mouse_mode()) {
-               case MouseObject:
+       switch (effective_mouse_mode()) {
+/*
+ *             case MouseGain: {
+                       //find regions's gain line
+                       AudioRegionView *rview = dynamic_cast<AudioRegionView*>(clicked_regionview);
+                               AutomationTimeAxisView *tview = dynamic_cast<AutomationTimeAxisView*>(clicked_trackview);
+                       if (rview) {
+                               AudioRegionGainLine *line = rview->get_gain_line();
+                               if (!line) break;
+                               
+                               //cut region gain points in the selection
+                               AutomationList& alist (line->the_list());
+                               XMLNode &before = alist.get_state();
+                               AutomationList* what_we_got = 0;
+                               if ((what_we_got = alist.cut (selection->time.front().start - rview->audio_region()->position(), selection->time.front().end - rview->audio_region()->position())) != 0) {
+                                       session->add_command(new MementoCommand<AutomationList>(alist, &before, &alist.get_state()));
+                                       delete what_we_got;
+                                       what_we_got = 0;
+                               }
+                               
+                               rview->set_envelope_visible(true);
+                               rview->audio_region()->set_envelope_active(true);
+                               
+                       } else if (tview) {
+                               AutomationLine *line = *(tview->lines.begin());
+                               if (!line) break;
+                               
+                               //cut auto points in the selection
+                               AutomationList& alist (line->the_list());
+                               XMLNode &before = alist.get_state();
+                               AutomationList* what_we_got = 0;
+                               if ((what_we_got = alist.cut (selection->time.front().start, selection->time.front().end)) != 0) {
+                                       session->add_command(new MementoCommand<AutomationList>(alist, &before, &alist.get_state()));
+                                       delete what_we_got;
+                                       what_we_got = 0;
+                               }               
+                       } else
+                               break;
+               } break;
+*/                     
+               case MouseObject: 
+               case MouseRange:
                        if (!rs.empty() || !selection->points.empty()) {
-
                                begin_reversible_command (opname + _(" objects"));
 
                                if (!rs.empty()) {
                                        cut_copy_regions (op, rs);
-
-                                       if (op == Cut) {
+                                       
+                                       if (op == Cut || op == Delete) {
                                                selection->clear_regions ();
                                        }
                                }
@@ -3504,21 +3796,15 @@ Editor::cut_copy (CutCopyOp op)
                                if (!selection->points.empty()) {
                                        cut_copy_points (op);
 
-                                       if (op == Cut) {
+                                       if (op == Cut || op == Delete) {
                                                selection->clear_points ();
                                        }
                                }
 
-                               commit_reversible_command ();
-                               break; // terminate case statement here
-                       }
-                       if (!selection->time.empty()) {
-                               /* don't cause suprises */
+                               commit_reversible_command ();   
                                break;
-                       }
-                       // fall thru if there was nothing selected
-
-               case MouseRange:
+                       } 
+                       
                        if (selection->time.empty()) {
                                framepos_t start, end;
                                if (!get_edit_op_range (start, end)) {
@@ -3526,39 +3812,108 @@ Editor::cut_copy (CutCopyOp op)
                                }
                                selection->set (start, end);
                        }
-
+                               
                        begin_reversible_command (opname + _(" range"));
                        cut_copy_ranges (op);
                        commit_reversible_command ();
-
-                       if (op == Cut) {
+                       
+                       if (op == Cut || op == Delete) {
                                selection->clear_time ();
                        }
 
                        break;
-
+                       
                default:
                        break;
                }
        }
 
-       if (op == Cut || op == Clear) {
+       if (op == Delete || op == Cut || op == Clear) {
                _drags->abort ();
        }
 }
 
+struct AutomationRecord {
+       AutomationRecord () : state (0) {}
+       AutomationRecord (XMLNode* s) : state (s) {}
+       
+       XMLNode* state; ///< state before any operation
+       boost::shared_ptr<Evoral::ControlList> copy; ///< copied events for the cut buffer
+};
+
 /** Cut, copy or clear selected automation points.
- * @param op Operation (Cut, Copy or Clear)
+ *  @param op Operation (Cut, Copy or Clear)
  */
 void
 Editor::cut_copy_points (CutCopyOp op)
 {
+       if (selection->points.empty ()) {
+               return;
+       }
+
+       /* XXX: not ideal, as there may be more than one track involved in the point selection */
+       _last_cut_copy_source_track = &selection->points.front()->line().trackview;
+
+       /* Keep a record of the AutomationLists that we end up using in this operation */
+       typedef std::map<boost::shared_ptr<AutomationList>, AutomationRecord> Lists;
+       Lists lists;
+
+       /* Go through all selected points, making an AutomationRecord for each distinct AutomationList */
        for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
+               boost::shared_ptr<AutomationList> al = (*i)->line().the_list();
+               if (lists.find (al) == lists.end ()) {
+                       /* We haven't seen this list yet, so make a record for it.  This includes
+                          taking a copy of its current state, in case this is needed for undo later.
+                       */
+                       lists[al] = AutomationRecord (&al->get_state ());
+               }
+       }
 
-               AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*>((*i).track);
+       if (op == Cut || op == Copy) {
+               /* This operation will involve putting things in the cut buffer, so create an empty
+                  ControlList for each of our source lists to put the cut buffer data in.
+               */
+               for (Lists::iterator i = lists.begin(); i != lists.end(); ++i) {
+                       i->second.copy = i->first->create (i->first->parameter ());
+               }
+
+               /* Add all selected points to the relevant copy ControlLists */
+               for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
+                       boost::shared_ptr<AutomationList> al = (*i)->line().the_list();
+                       AutomationList::const_iterator j = (*i)->model ();
+                       lists[al].copy->add ((*j)->when, (*j)->value);
+               }
+
+               for (Lists::iterator i = lists.begin(); i != lists.end(); ++i) {
+                       /* Correct this copy list so that it starts at time 0 */
+                       double const start = i->second.copy->front()->when;
+                       for (AutomationList::iterator j = i->second.copy->begin(); j != i->second.copy->end(); ++j) {
+                               (*j)->when -= start;
+                       }
+
+                       /* And add it to the cut buffer */
+                       cut_buffer->add (i->second.copy);
+               }
+       }
+               
+       if (op == Delete || op == Cut) {
+               /* This operation needs to remove things from the main AutomationList, so do that now */
+               
+               for (Lists::iterator i = lists.begin(); i != lists.end(); ++i) {
+                       i->first->freeze ();
+               }
 
-               if (atv) {
-                       atv->cut_copy_clear_objects (selection->points, op);
+               /* Remove each selected point from its AutomationList */
+               for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
+                       boost::shared_ptr<AutomationList> al = (*i)->line().the_list();
+                       al->erase ((*i)->model ());
+               }
+
+               /* Thaw the lists and add undo records for them */
+               for (Lists::iterator i = lists.begin(); i != lists.end(); ++i) {
+                       boost::shared_ptr<AutomationList> al = i->first;
+                       al->thaw ();
+                       _session->add_command (new MementoCommand<AutomationList> (*al.get(), i->second.state, &(al->get_state ())));
                }
        }
 }
@@ -3602,7 +3957,16 @@ Editor::remove_clicked_region ()
 
        begin_reversible_command (_("remove region"));
        playlist->clear_changes ();
+       playlist->clear_owned_changes ();
        playlist->remove_region (clicked_regionview->region());
+
+       /* We might have removed regions, which alters other regions' layering_index,
+          so we need to do a recursive diff here.
+       */
+       vector<Command*> cmds;
+       playlist->rdiff (cmds);
+       _session->add_commands (cmds);
+       
        _session->add_command(new StatefulDiffCommand (playlist));
        commit_reversible_command ();
 }
@@ -3646,23 +4010,16 @@ Editor::remove_selected_regions ()
                        continue;
                }
 
-               vector<boost::shared_ptr<Playlist> >::iterator i;
-
-               //only prep history if this is a new playlist.
-               for (i = playlists.begin(); i != playlists.end(); ++i) {
-                       if ((*i) == playlist) {
-                               break;
-                       }
-               }
-
-               if (i == playlists.end()) {
-
-                       playlist->clear_changes ();
-                       playlist->freeze ();
+               /* get_regions_from_selection_and_entered() guarantees that
+                  the playlists involved are unique, so there is no need
+                  to check here.
+               */
 
-                       playlists.push_back (playlist);
-               }
+               playlists.push_back (playlist);
 
+               playlist->clear_changes ();
+               playlist->clear_owned_changes ();
+               playlist->freeze ();
                playlist->remove_region (*rl);
        }
 
@@ -3670,6 +4027,14 @@ Editor::remove_selected_regions ()
 
        for (pl = playlists.begin(); pl != playlists.end(); ++pl) {
                (*pl)->thaw ();
+
+               /* We might have removed regions, which alters other regions' layering_index,
+                  so we need to do a recursive diff here.
+               */
+               vector<Command*> cmds;
+               (*pl)->rdiff (cmds);
+               _session->add_commands (cmds);
+               
                _session->add_command(new StatefulDiffCommand (*pl));
        }
 
@@ -3701,13 +4066,13 @@ Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
 
                first_position = min ((framepos_t) (*x)->region()->position(), first_position);
 
-               if (op == Cut || op == Clear) {
+               if (op == Cut || op == Clear || op == Delete) {
                        boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
 
                        if (pl) {
                                FreezeList::iterator fl;
 
-                               //only take state if this is a new playlist.
+                               // only take state if this is a new playlist.
                                for (fl = freezelist.begin(); fl != freezelist.end(); ++fl) {
                                        if ((*fl) == pl) {
                                                break;
@@ -3716,6 +4081,7 @@ Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
 
                                if (fl == freezelist.end()) {
                                        pl->clear_changes();
+                                       pl->clear_owned_changes ();
                                        pl->freeze ();
                                        freezelist.insert (pl);
                                }
@@ -3755,22 +4121,25 @@ Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
                tmp = x;
                ++tmp;
 
-               vector<PlaylistMapping>::iterator z;
+               if (op != Delete) {
 
-               for (z = pmap.begin(); z != pmap.end(); ++z) {
-                       if ((*z).tv == &tv) {
-                               break;
+                       vector<PlaylistMapping>::iterator z;
+                       
+                       for (z = pmap.begin(); z != pmap.end(); ++z) {
+                               if ((*z).tv == &tv) {
+                                       break;
+                               }
+                       }
+                       
+                       assert (z != pmap.end());
+                       
+                       if (!(*z).pl) {
+                               npl = PlaylistFactory::create (pl->data_type(), *_session, "cutlist", true);
+                               npl->freeze();
+                               (*z).pl = npl;
+                       } else {
+                               npl = (*z).pl;
                        }
-               }
-
-               assert (z != pmap.end());
-
-               if (!(*z).pl) {
-                       npl = PlaylistFactory::create (pl->data_type(), *_session, "cutlist", true);
-                       npl->freeze();
-                       (*z).pl = npl;
-               } else {
-                       npl = (*z).pl;
                }
 
                boost::shared_ptr<Region> r = (*x)->region();
@@ -3779,6 +4148,10 @@ Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
                assert (r != 0);
 
                switch (op) {
+               case Delete:
+                       pl->remove_region (r);
+                       break;
+                       
                case Cut:
                        _xx = RegionFactory::create (r);
                        npl->add_region (_xx, r->position() - first_position);
@@ -3791,36 +4164,47 @@ Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
                        break;
 
                case Clear:
-                       pl->remove_region (r);
+                       pl->remove_region (r);  
                        break;
                }
 
                x = tmp;
        }
 
-       list<boost::shared_ptr<Playlist> > foo;
+       if (op != Delete) {
 
-       /* the pmap is in the same order as the tracks in which selected regions occured */
-
-       for (vector<PlaylistMapping>::iterator i = pmap.begin(); i != pmap.end(); ++i) {
-               if ((*i).pl) {
-                       (*i).pl->thaw();
-                       foo.push_back ((*i).pl);
+               list<boost::shared_ptr<Playlist> > foo;
+               
+               /* the pmap is in the same order as the tracks in which selected regions occured */
+               
+               for (vector<PlaylistMapping>::iterator i = pmap.begin(); i != pmap.end(); ++i) {
+                       if ((*i).pl) {
+                               (*i).pl->thaw();
+                               foo.push_back ((*i).pl);
+                       }
+               }
+               
+               if (!foo.empty()) {
+                       cut_buffer->set (foo);
+               }
+               
+               if (pmap.empty()) {
+                       _last_cut_copy_source_track = 0;
+               } else {
+                       _last_cut_copy_source_track = pmap.front().tv;
                }
        }
 
-       if (!foo.empty()) {
-               cut_buffer->set (foo);
-       }
-
-       if (pmap.empty()) {
-               _last_cut_copy_source_track = 0;
-       } else {
-               _last_cut_copy_source_track = pmap.front().tv;
-       }
-        
        for (FreezeList::iterator pl = freezelist.begin(); pl != freezelist.end(); ++pl) {
                (*pl)->thaw ();
+
+               /* We might have removed regions, which alters other regions' layering_index,
+                  so we need to do a recursive diff here.
+               */
+               vector<Command*> cmds;
+               (*pl)->rdiff (cmds);
+               _session->add_commands (cmds);
+               
                _session->add_command (new StatefulDiffCommand (*pl));
        }
 }
@@ -3828,36 +4212,34 @@ Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
 void
 Editor::cut_copy_ranges (CutCopyOp op)
 {
-       TrackViewList* ts;
-       TrackViewList entered;
+       TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
 
        /* Sort the track selection now, so that it if is used, the playlists
           selected by the calls below to cut_copy_clear are in the order that
           their tracks appear in the editor.  This makes things like paste
           of ranges work properly.
        */
-       sort_track_selection (&selection->tracks);
 
-       if (selection->tracks.empty()) {
+       sort_track_selection (ts);
+
+       if (ts.empty()) {
                if (!entered_track) {
                        return;
                }
-               entered.push_back (entered_track);
-               ts = &entered;
-       } else {
-               ts = &selection->tracks;
-       }
+               ts.push_back (entered_track);
+       } 
 
-       for (TrackSelection::iterator i = ts->begin(); i != ts->end(); ++i) {
+       for (TrackViewList::iterator i = ts.begin(); i != ts.end(); ++i) {
                (*i)->cut_copy_clear (*selection, op);
        }
 }
 
 void
-Editor::paste (float times)
+Editor::paste (float times, bool from_context)
 {
         DEBUG_TRACE (DEBUG::CutNPaste, "paste to preferred edit pos\n");
-       paste_internal (get_preferred_edit_position(), times);
+
+       paste_internal (get_preferred_edit_position (false, from_context), times);
 }
 
 void
@@ -3900,12 +4282,15 @@ Editor::paste_internal (framepos_t position, float times)
 
        /* get everything in the correct order */
 
-       if (!selection->tracks.empty()) {
-               /* there are some selected tracks, so paste to them */
-               sort_track_selection ();
-               ts = selection->tracks;
+       if (_edit_point == Editing::EditAtMouse && entered_track) {
+               /* With the mouse edit point, paste onto the track under the mouse */
+               ts.push_back (entered_track);
+       } else if (!selection->tracks.empty()) {
+               /* Otherwise, if there are some selected tracks, paste to them */
+               ts = selection->tracks.filter_to_unique_playlists ();
+               sort_track_selection (ts);
        } else if (_last_cut_copy_source_track) {
-               /* otherwise paste to the track that the cut/copy came from;
+               /* Otherwise paste to the track that the cut/copy came from;
                   see discussion in mantis #3333.
                */
                ts.push_back (_last_cut_copy_source_track);
@@ -3914,15 +4299,15 @@ Editor::paste_internal (framepos_t position, float times)
        if (internal_editing ()) {
 
                /* undo/redo is handled by individual tracks/regions */
-               
+
                for (nth = 0, i = ts.begin(); i != ts.end(); ++i, ++nth) {
-                       
+
                        RegionSelection rs;
                        RegionSelection::iterator r;
                        MidiNoteSelection::iterator cb;
-                       
+
                        get_regions_at (rs, position, ts);
-                       
+
                        for (cb = cut_buffer->midi_notes.begin(), r = rs.begin();
                             cb != cut_buffer->midi_notes.end() && r != rs.end(); ++r) {
                                MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (*r);
@@ -3932,17 +4317,17 @@ Editor::paste_internal (framepos_t position, float times)
                                }
                        }
                }
-               
+
        } else {
 
                /* we do redo (do you do voodoo?) */
 
                begin_reversible_command (Operations::paste);
-               
+
                for (nth = 0, i = ts.begin(); i != ts.end(); ++i, ++nth) {
                        (*i)->paste (position, times, *cut_buffer, nth);
                }
-               
+
                commit_reversible_command ();
        }
 }
@@ -4008,7 +4393,9 @@ Editor::duplicate_selection (float times)
 
        ri = new_regions.begin();
 
-       for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+       TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
+
+       for (TrackViewList::iterator i = ts.begin(); i != ts.end(); ++i) {
                if ((playlist = (*i)->playlist()) == 0) {
                        continue;
                }
@@ -4025,32 +4412,27 @@ Editor::duplicate_selection (float times)
        commit_reversible_command ();
 }
 
+/** Reset all selected points to the relevant default value */
 void
 Editor::reset_point_selection ()
 {
-       /* reset all selected points to the relevant default value */
-
        for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
-
-               AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*>((*i).track);
-
-               if (atv) {
-                       atv->reset_objects (selection->points);
-               }
+               ARDOUR::AutomationList::iterator j = (*i)->model ();
+               (*j)->value = (*i)->line().the_list()->default_value ();
        }
 }
 
 void
 Editor::center_playhead ()
 {
-       float page = _canvas_width * frames_per_unit;
-       center_screen_internal (playhead_cursor->current_frame, page);
+       float const page = _visible_canvas_width * frames_per_pixel;
+       center_screen_internal (playhead_cursor->current_frame (), page);
 }
 
 void
 Editor::center_edit_point ()
 {
-       float page = _canvas_width * frames_per_unit;
+       float const page = _visible_canvas_width * frames_per_pixel;
        center_screen_internal (get_preferred_edit_position(), page);
 }
 
@@ -4087,7 +4469,9 @@ Editor::nudge_track (bool use_edit, bool forwards)
 
        begin_reversible_command (_("nudge track"));
 
-       for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+       TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
+
+       for (TrackViewList::iterator i = ts.begin(); i != ts.end(); ++i) {
 
                if ((playlist = (*i)->playlist()) == 0) {
                        continue;
@@ -4097,12 +4481,12 @@ Editor::nudge_track (bool use_edit, bool forwards)
                playlist->clear_owned_changes ();
 
                playlist->nudge_after (start, distance, forwards);
-               
+
                vector<Command*> cmds;
-               
+
                playlist->rdiff (cmds);
                _session->add_commands (cmds);
-               
+
                _session->add_command (new StatefulDiffCommand (playlist));
        }
 
@@ -4147,7 +4531,7 @@ Editor::normalize_region ()
        }
 
        RegionSelection rs = get_regions_from_selection_and_entered ();
-       
+
        if (rs.empty()) {
                return;
        }
@@ -4180,7 +4564,7 @@ Editor::normalize_region ()
                                set_canvas_cursor (current_canvas_cursor);
                                return;
                        }
-                       
+
                        max_amps.push_back (a);
                        max_amp = max (max_amp, a);
                        dialog.ascend ();
@@ -4190,7 +4574,7 @@ Editor::normalize_region ()
        begin_reversible_command (_("normalize"));
 
        list<double>::const_iterator a = max_amps.begin ();
-       
+
        for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
                AudioRegionView* const arv = dynamic_cast<AudioRegionView*> (*r);
                if (!arv) {
@@ -4200,7 +4584,7 @@ Editor::normalize_region ()
                arv->region()->clear_changes ();
 
                double const amp = dialog.normalize_individually() ? *a : max_amp;
-               
+
                arv->audio_region()->normalize (amp, dialog.target ());
                _session->add_command (new StatefulDiffCommand (arv->region()));
 
@@ -4311,13 +4695,13 @@ Editor::strip_region_silence ()
        int const r = d.run ();
 
         d.drop_rects ();
-       
+
         if (r == Gtk::RESPONSE_OK) {
                 ARDOUR::AudioIntervalMap silences;
                 d.silences (silences);
                StripSilence s (*_session, silences, d.fade_length());
                apply_filter (s, _("strip silence"), &d);
-       } 
+       }
 }
 
 Command*
@@ -4329,7 +4713,10 @@ Editor::apply_midi_note_edit_op_to_region (MidiOperator& op, MidiRegionView& mrv
        vector<Evoral::Sequence<Evoral::MusicalTime>::Notes> v;
        v.push_back (selected);
 
-       return op (mrv.midi_region()->model(), v);
+       framepos_t pos_frames = mrv.midi_region()->position();
+       double     pos_beats  = _session->tempo_map().framewalk_to_beats(0, pos_frames);
+
+       return op (mrv.midi_region()->model(), pos_beats, v);
 }
 
 void
@@ -4388,7 +4775,7 @@ Editor::fork_region ()
                if (mrv) {
                        boost::shared_ptr<Playlist> playlist = mrv->region()->playlist();
                        boost::shared_ptr<MidiRegion> newregion = mrv->midi_region()->clone ();
-                        
+
                        playlist->clear_changes ();
                        playlist->replace_region (mrv->region(), newregion, mrv->region()->position());
                        _session->add_command(new StatefulDiffCommand (playlist));
@@ -4435,8 +4822,7 @@ Editor::quantize_region ()
        qd->hide ();
 
        if (r == Gtk::RESPONSE_OK) {
-               Quantize quant (*_session, Plain,
-                               qd->snap_start(), qd->snap_end(),
+               Quantize quant (*_session, qd->snap_start(), qd->snap_end(),
                                qd->start_grid_size(), qd->end_grid_size(),
                                qd->strength(), qd->swing(), qd->threshold());
 
@@ -4445,18 +4831,25 @@ Editor::quantize_region ()
 }
 
 void
-Editor::insert_patch_change ()
+Editor::insert_patch_change (bool from_context)
 {
        RegionSelection rs = get_regions_from_selection_and_entered ();
+
        if (rs.empty ()) {
                return;
        }
 
-       framepos_t const p = get_preferred_edit_position (false);
+       const framepos_t p = get_preferred_edit_position (false, from_context);
+
+       /* XXX: bit of a hack; use the MIDNAM from the first selected region;
+          there may be more than one, but the PatchChangeDialog can only offer
+          one set of patch menus.
+       */
+       MidiRegionView* first = dynamic_cast<MidiRegionView*> (rs.front ());
 
        Evoral::PatchChange<Evoral::MusicalTime> empty (0, 0, 0, 0);
-       PatchChangeDialog d (0, _session, empty, Gtk::Stock::ADD);
-       
+        PatchChangeDialog d (0, _session, empty, first->instrument_info(), Gtk::Stock::ADD);
+
        if (d.run() == RESPONSE_CANCEL) {
                return;
        }
@@ -4487,7 +4880,7 @@ Editor::apply_filter (Filter& filter, string command, ProgressReporter* progress
 
        int n = 0;
        int const N = rs.size ();
-       
+
        for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ) {
                RegionSelection::iterator tmp = r;
                ++tmp;
@@ -4503,6 +4896,7 @@ Editor::apply_filter (Filter& filter, string command, ProgressReporter* progress
                        if (arv->audio_region()->apply (filter, progress) == 0) {
 
                                playlist->clear_changes ();
+                               playlist->clear_owned_changes ();
 
                                if (filter.results.empty ()) {
 
@@ -4525,6 +4919,13 @@ Editor::apply_filter (Filter& filter, string command, ProgressReporter* progress
 
                                }
 
+                               /* We might have removed regions, which alters other regions' layering_index,
+                                  so we need to do a recursive diff here.
+                               */
+                               vector<Command*> cmds;
+                               playlist->rdiff (cmds);
+                               _session->add_commands (cmds);
+                               
                                _session->add_command(new StatefulDiffCommand (playlist));
                        } else {
                                goto out;
@@ -4577,25 +4978,49 @@ Editor::reset_region_gain_envelopes ()
 }
 
 void
-Editor::toggle_gain_envelope_visibility ()
+Editor::set_region_gain_visibility (RegionView* rv)
+{
+       AudioRegionView* arv = dynamic_cast<AudioRegionView*> (rv);
+       if (arv) {
+               arv->update_envelope_visibility();
+       }
+}
+
+void
+Editor::set_gain_envelope_visibility ()
+{
+       if (!_session) {
+               return;
+       }
+
+       for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+               AudioTimeAxisView* v = dynamic_cast<AudioTimeAxisView*>(*i);
+               if (v) {
+                       v->audio_view()->foreach_regionview (sigc::mem_fun (this, &Editor::set_region_gain_visibility));
+               }
+       }
+}
+
+void
+Editor::toggle_gain_envelope_active ()
 {
        if (_ignore_region_action) {
                return;
        }
-       
+
        RegionSelection rs = get_regions_from_selection_and_entered ();
 
        if (!_session || rs.empty()) {
                return;
        }
 
-       _session->begin_reversible_command (_("region gain envelope visible"));
+       _session->begin_reversible_command (_("region gain envelope active"));
 
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
                if (arv) {
                        arv->region()->clear_changes ();
-                       arv->set_envelope_visible (!arv->envelope_visible());
+                       arv->audio_region()->set_envelope_active (!arv->audio_region()->envelope_active());
                        _session->add_command (new StatefulDiffCommand (arv->region()));
                }
        }
@@ -4604,34 +5029,31 @@ Editor::toggle_gain_envelope_visibility ()
 }
 
 void
-Editor::toggle_gain_envelope_active ()
+Editor::toggle_region_lock ()
 {
        if (_ignore_region_action) {
                return;
        }
-       
+
        RegionSelection rs = get_regions_from_selection_and_entered ();
 
        if (!_session || rs.empty()) {
                return;
        }
 
-       _session->begin_reversible_command (_("region gain envelope active"));
+       _session->begin_reversible_command (_("toggle region lock"));
 
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
-               AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
-               if (arv) {
-                       arv->region()->clear_changes ();
-                       arv->audio_region()->set_envelope_active (!arv->audio_region()->envelope_active());
-                       _session->add_command (new StatefulDiffCommand (arv->region()));
-               }
+               (*i)->region()->clear_changes ();
+               (*i)->region()->set_locked (!(*i)->region()->locked());
+               _session->add_command (new StatefulDiffCommand ((*i)->region()));
        }
 
        _session->commit_reversible_command ();
 }
 
 void
-Editor::toggle_region_lock ()
+Editor::toggle_region_video_lock ()
 {
        if (_ignore_region_action) {
                return;
@@ -4643,11 +5065,11 @@ Editor::toggle_region_lock ()
                return;
        }
 
-       _session->begin_reversible_command (_("toggle region lock"));
+       _session->begin_reversible_command (_("Toggle Video Lock"));
 
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                (*i)->region()->clear_changes ();
-               (*i)->region()->set_locked (!(*i)->region()->locked());
+               (*i)->region()->set_video_locked (!(*i)->region()->video_locked());
                _session->add_command (new StatefulDiffCommand ((*i)->region()));
        }
 
@@ -4660,7 +5082,7 @@ Editor::toggle_region_lock_style ()
        if (_ignore_region_action) {
                return;
        }
-       
+
        RegionSelection rs = get_regions_from_selection_and_entered ();
 
        if (!_session || rs.empty()) {
@@ -4685,7 +5107,7 @@ Editor::toggle_opaque_region ()
        if (_ignore_region_action) {
                return;
        }
-       
+
        RegionSelection rs = get_regions_from_selection_and_entered ();
 
        if (!_session || rs.empty()) {
@@ -4724,6 +5146,60 @@ Editor::toggle_record_enable ()
        }
 }
 
+void
+Editor::toggle_solo ()
+{
+       bool new_state = false;
+       bool first = true;
+       boost::shared_ptr<RouteList> rl (new RouteList);
+
+       for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+               RouteTimeAxisView *rtav = dynamic_cast<RouteTimeAxisView *>(*i);
+
+               if (!rtav) {
+                       continue;
+               }
+
+               if (first) {
+                       new_state = !rtav->route()->soloed ();
+                       first = false;
+               }
+
+               rl->push_back (rtav->route());
+       }
+
+       _session->set_solo (rl, new_state, Session::rt_cleanup, true);
+}
+
+void
+Editor::toggle_mute ()
+{
+       bool new_state = false;
+       bool first = true;
+       boost::shared_ptr<RouteList> rl (new RouteList);
+
+       for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+               RouteTimeAxisView *rtav = dynamic_cast<RouteTimeAxisView *>(*i);
+
+               if (!rtav) {
+                       continue;
+               }
+
+               if (first) {
+                       new_state = !rtav->route()->muted();
+                       first = false;
+               }
+
+               rl->push_back (rtav->route());
+       }
+
+       _session->set_mute (rl, new_state, Session::rt_cleanup, true);
+}
+
+void
+Editor::toggle_solo_isolate ()
+{
+}
 
 void
 Editor::set_fade_length (bool in)
@@ -4877,7 +5353,7 @@ Editor::set_fade_in_active (bool yn)
 
 
                boost::shared_ptr<AudioRegion> ar (tmp->audio_region());
-               
+
                ar->clear_changes ();
                ar->set_fade_in_active (yn);
                _session->add_command (new StatefulDiffCommand (ar));
@@ -4917,8 +5393,12 @@ Editor::set_fade_out_active (bool yn)
 void
 Editor::toggle_region_fades (int dir)
 {
+       if (_ignore_region_action) {
+               return;
+       }
+       
        boost::shared_ptr<AudioRegion> ar;
-       bool yn;
+       bool yn = false;
 
        RegionSelection rs = get_regions_from_selection_and_entered ();
 
@@ -4926,7 +5406,7 @@ Editor::toggle_region_fades (int dir)
                return;
        }
 
-       RegionSelection::iterator i;    
+       RegionSelection::iterator i;
        for (i = rs.begin(); i != rs.end(); ++i) {
                if ((ar = boost::dynamic_pointer_cast<AudioRegion>((*i)->region())) != 0) {
                        if (dir == -1) {
@@ -4977,24 +5457,6 @@ Editor::update_region_fade_visibility ()
        }
 }
 
-/** Update crossfade visibility after its configuration has been changed */
-void
-Editor::update_xfade_visibility ()
-{
-       _xfade_visibility = _session->config.get_xfades_visible ();
-
-       for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
-               AudioTimeAxisView* v = dynamic_cast<AudioTimeAxisView*>(*i);
-               if (v) {
-                       if (_xfade_visibility) {
-                               v->show_all_xfades ();
-                       } else {
-                               v->hide_all_xfades ();
-                       }
-               }
-       }
-}
-
 void
 Editor::set_edit_point ()
 {
@@ -5041,17 +5503,18 @@ Editor::set_playhead_cursor ()
                        _session->request_locate (where, _session->transport_rolling());
                }
        }
+
+       if ( Config->get_always_play_range() )
+               cancel_time_selection();
 }
 
 void
 Editor::split_region ()
 {
-       if (((mouse_mode == MouseRange) || 
-            (mouse_mode != MouseObject && _join_object_range_state == JOIN_OBJECT_RANGE_RANGE)) && 
-           !selection->time.empty()) {
+       if ( !selection->time.empty()) {
                separate_regions_between (selection->time);
                return;
-       } 
+       }
 
        RegionSelection rs = get_regions_from_selection_and_edit_point ();
 
@@ -5064,28 +5527,9 @@ Editor::split_region ()
        split_regions_at (where, rs);
 }
 
-void
-Editor::ensure_entered_track_selected (bool op_really_wants_one_track_if_none_are_selected)
-{
-       if (entered_track && mouse_mode == MouseObject) {
-               if (!selection->tracks.empty()) {
-                       if (!selection->selected (entered_track)) {
-                               selection->add (entered_track);
-                       }
-               } else {
-                       /* there is no selection, but this operation requires/prefers selected objects */
-
-                       if (op_really_wants_one_track_if_none_are_selected) {
-                               selection->set (entered_track);
-                       }
-               }
-       }
-}
-
 struct EditorOrderRouteSorter {
     bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
-           /* use of ">" forces the correct sort order */
-           return a->order_key ("editor") < b->order_key ("editor");
+           return a->order_key (EditorSort) < b->order_key (EditorSort);
     }
 };
 
@@ -5159,7 +5603,7 @@ Editor::ensure_track_visible(TimeAxisView *track)
                return;
 
        double const current_view_min_y = vertical_adjustment.get_value();
-       double const current_view_max_y = vertical_adjustment.get_value() + vertical_adjustment.get_page_size() - canvas_timebars_vsize;
+       double const current_view_max_y = vertical_adjustment.get_value() + vertical_adjustment.get_page_size();
 
        double const track_min_y = track->y_position ();
        double const track_max_y = track->y_position () + track->effective_height ();
@@ -5176,7 +5620,7 @@ Editor::ensure_track_visible(TimeAxisView *track)
                new_value = track_min_y;
        } else {
                // Track is below the current view
-               new_value = track->y_position () + track->effective_height() + canvas_timebars_vsize - vertical_adjustment.get_page_size();
+               new_value = track->y_position () + track->effective_height() - vertical_adjustment.get_page_size();
        }
 
        vertical_adjustment.set_value(new_value);
@@ -5384,7 +5828,9 @@ Editor::define_one_bar (framepos_t start, framepos_t end)
           we have frames per bar, and beats per bar, so ...
        */
 
-       double frames_per_beat = length / m.beats_per_bar();
+       /* XXXX METER MATH */
+
+       double frames_per_beat = length / m.divisions_per_bar();
 
        /* beats per minute = */
 
@@ -5417,7 +5863,7 @@ Editor::define_one_bar (framepos_t start, framepos_t end)
                        _("Do you want to set the global tempo or add a new tempo marker?"),
                        options
                        );
-               
+
                c.set_default_response (2);
 
                switch (c.run()) {
@@ -5448,7 +5894,9 @@ Editor::define_one_bar (framepos_t start, framepos_t end)
        } else if (t.frame() == start) {
                _session->tempo_map().change_existing_tempo_at (start, beats_per_minute, t.note_type());
        } else {
-               _session->tempo_map().add_tempo (Tempo (beats_per_minute, t.note_type()), start);
+               Timecode::BBT_Time bbt;
+               _session->tempo_map().bbt_time (start, bbt);
+               _session->tempo_map().add_tempo (Tempo (beats_per_minute, t.note_type()), bbt);
        }
 
        XMLNode& after (_session->tempo_map().get_state());
@@ -5495,9 +5943,9 @@ void
 Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList& positions, bool can_ferret, bool select_new)
 {
        bool use_rhythmic_rodent = false;
-       
+
        boost::shared_ptr<Playlist> pl = r->playlist();
-       
+
        list<boost::shared_ptr<Region> > new_regions;
 
        if (!pl) {
@@ -5528,7 +5976,7 @@ Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList
 
                int response = msg.run();
                msg.hide ();
-               
+
                switch (response) {
                case RESPONSE_OK:
                        break;
@@ -5548,6 +5996,7 @@ Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList
        AnalysisFeatureList::const_iterator x;
 
        pl->clear_changes ();
+       pl->clear_owned_changes ();
 
        x = positions.begin();
 
@@ -5561,7 +6010,7 @@ Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList
        framepos_t pos = 0;
 
        while (x != positions.end()) {
-         
+
                /* deal with positons that are out of scope of present region bounds */
                if (*x <= 0 || *x > r->length()) {
                        ++x;
@@ -5577,7 +6026,7 @@ Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList
                 */
 
                framepos_t len = (*x) - pos;
-               
+
                /* XXX we do we really want to allow even single-sample regions?
                   shouldn't we have some kind of lower limit on region size?
                */
@@ -5594,14 +6043,18 @@ Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList
 
                /* do NOT announce new regions 1 by one, just wait till they are all done */
 
-               PropertyList plist; 
-               
+               PropertyList plist;
+
                plist.add (ARDOUR::Properties::start, file_start);
                plist.add (ARDOUR::Properties::length, len);
                plist.add (ARDOUR::Properties::name, new_name);
                plist.add (ARDOUR::Properties::layer, 0);
 
                boost::shared_ptr<Region> nr = RegionFactory::create (r->sources(), plist, false);
+               /* because we set annouce to false, manually add the new region to the
+                  RegionFactory map
+               */
+               RegionFactory::map_add (nr);
 
                pl->add_region (nr, r->position() + pos);
 
@@ -5616,26 +6069,37 @@ Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList
        string new_name;
 
        RegionFactory::region_name (new_name, r->name());
-       
+
        /* Add the final region */
-       PropertyList plist; 
-               
+       PropertyList plist;
+
        plist.add (ARDOUR::Properties::start, r->start() + pos);
        plist.add (ARDOUR::Properties::length, r->last_frame() - (r->position() + pos) + 1);
        plist.add (ARDOUR::Properties::name, new_name);
        plist.add (ARDOUR::Properties::layer, 0);
 
        boost::shared_ptr<Region> nr = RegionFactory::create (r->sources(), plist, false);
+       /* because we set annouce to false, manually add the new region to the
+          RegionFactory map
+       */
+       RegionFactory::map_add (nr);
        pl->add_region (nr, r->position() + pos);
-       
+
        if (select_new) {
                new_regions.push_front(nr);
        }
 
        pl->thaw ();
 
-       _session->add_command (new StatefulDiffCommand (pl));
+       /* We might have removed regions, which alters other regions' layering_index,
+          so we need to do a recursive diff here.
+       */
+       vector<Command*> cmds;
+       pl->rdiff (cmds);
+       _session->add_commands (cmds);
        
+       _session->add_command (new StatefulDiffCommand (pl));
+
        if (select_new) {
 
                for (list<boost::shared_ptr<Region> >::iterator i = new_regions.begin(); i != new_regions.end(); ++i){
@@ -5656,16 +6120,16 @@ Editor::place_transient()
        if (rs.empty()) {
                return;
        }
-       
+
        framepos_t where = get_preferred_edit_position();
 
        _session->begin_reversible_command (_("place transient"));
-       
+
        for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
                framepos_t position = (*r)->region()->position();
                (*r)->region()->add_transient(where - position);
        }
-       
+
        _session->commit_reversible_command ();
 }
 
@@ -5687,19 +6151,19 @@ void
 Editor::snap_regions_to_grid ()
 {
        list <boost::shared_ptr<Playlist > > used_playlists;
-       
+
        RegionSelection rs = get_regions_from_selection_and_entered ();
 
        if (!_session || rs.empty()) {
                return;
        }
-       
+
        _session->begin_reversible_command (_("snap regions to grid"));
-       
+
        for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
-         
+
                boost::shared_ptr<Playlist> pl = (*r)->region()->playlist();
-         
+
                if (!pl->frozen()) {
                        /* we haven't seen this playlist before */
 
@@ -5710,9 +6174,9 @@ Editor::snap_regions_to_grid ()
 
                framepos_t start_frame = (*r)->region()->first_frame ();
                snap_to (start_frame);
-               (*r)->region()->set_position (start_frame, this);
+               (*r)->region()->set_position (start_frame);
        }
-       
+
        while (used_playlists.size() > 0) {
                list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
                (*i)->thaw();
@@ -5726,7 +6190,7 @@ void
 Editor::close_region_gaps ()
 {
        list <boost::shared_ptr<Playlist > > used_playlists;
-       
+
        RegionSelection rs = get_regions_from_selection_and_entered ();
 
        if (!_session || rs.empty()) {
@@ -5738,10 +6202,9 @@ Editor::close_region_gaps ()
        Table table (2, 3);
        table.set_spacings (12);
        table.set_border_width (12);
-       Label* l = manage (new Label (_("Crossfade length")));
-       l->set_alignment (0, 0.5);
+       Label* l = manage (left_aligned_label (_("Crossfade length")));
        table.attach (*l, 0, 1, 0, 1);
-       
+
        SpinButton spin_crossfade (1, 0);
        spin_crossfade.set_range (0, 15);
        spin_crossfade.set_increments (1, 1);
@@ -5750,10 +6213,9 @@ Editor::close_region_gaps ()
 
        table.attach (*manage (new Label (_("ms"))), 2, 3, 0, 1);
 
-       l = manage (new Label (_("Pull-back length")));
-       l->set_alignment (0, 0.5);
+       l = manage (left_aligned_label (_("Pull-back length")));
        table.attach (*l, 0, 1, 1, 2);
-       
+
        SpinButton spin_pullback (1, 0);
        spin_pullback.set_range (0, 100);
        spin_pullback.set_increments (1, 1);
@@ -5761,7 +6223,7 @@ Editor::close_region_gaps ()
        table.attach (spin_pullback, 1, 2, 1, 2);
 
        table.attach (*manage (new Label (_("ms"))), 2, 3, 1, 2);
-       
+
        dialog.get_vbox()->pack_start (table);
        dialog.add_button (Stock::CANCEL, RESPONSE_CANCEL);
        dialog.add_button (_("Ok"), RESPONSE_ACCEPT);
@@ -5771,25 +6233,25 @@ Editor::close_region_gaps ()
                return;
        }
 
-       framepos_t crossfade_len = spin_crossfade.get_value(); 
+       framepos_t crossfade_len = spin_crossfade.get_value();
        framepos_t pull_back_frames = spin_pullback.get_value();
 
        crossfade_len = lrintf (crossfade_len * _session->frame_rate()/1000);
        pull_back_frames = lrintf (pull_back_frames * _session->frame_rate()/1000);
 
        /* Iterate over the region list and make adjacent regions overlap by crossfade_len_ms */
-       
+
        _session->begin_reversible_command (_("close region gaps"));
 
        int idx = 0;
        boost::shared_ptr<Region> last_region;
-       
+
        rs.sort_by_position_and_track();
-       
+
        for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
-         
+
                boost::shared_ptr<Playlist> pl = (*r)->region()->playlist();
-               
+
                if (!pl->frozen()) {
                        /* we haven't seen this playlist before */
 
@@ -5799,21 +6261,21 @@ Editor::close_region_gaps ()
                }
 
                framepos_t position = (*r)->region()->position();
-         
+
                if (idx == 0 || position < last_region->position()){
                        last_region = (*r)->region();
                        idx++;
                        continue;
                }
-               
-               (*r)->region()->trim_front( (position - pull_back_frames), this );
-               last_region->trim_end( (position - pull_back_frames + crossfade_len), this );
-               
+
+               (*r)->region()->trim_front( (position - pull_back_frames));
+               last_region->trim_end( (position - pull_back_frames + crossfade_len));
+
                last_region = (*r)->region();
-               
+
                idx++;
        }
-       
+
        while (used_playlists.size() > 0) {
                list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
                (*i)->thaw();
@@ -5838,7 +6300,12 @@ Editor::tab_to_transient (bool forward)
 
        if (!selection->tracks.empty()) {
 
-               for (TrackSelection::iterator t = selection->tracks.begin(); t != selection->tracks.end(); ++t) {
+               /* don't waste time searching for transients in duplicate playlists.
+                */
+
+               TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
+
+               for (TrackViewList::iterator t = ts.begin(); t != ts.end(); ++t) {
 
                        RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*t);
 
@@ -5901,8 +6368,11 @@ Editor::tab_to_transient (bool forward)
 void
 Editor::playhead_forward_to_grid ()
 {
-       if (!_session) return;
-       framepos_t pos = playhead_cursor->current_frame;
+       if (!_session) {
+               return;
+       }
+       
+       framepos_t pos = playhead_cursor->current_frame ();
        if (pos < max_framepos - 1) {
                pos += 2;
                snap_to_internal (pos, 1, false);
@@ -5914,8 +6384,11 @@ Editor::playhead_forward_to_grid ()
 void
 Editor::playhead_backward_to_grid ()
 {
-       if (!_session) return;
-       framepos_t pos = playhead_cursor->current_frame;
+       if (!_session) {
+               return;
+       }
+       
+       framepos_t pos = playhead_cursor->current_frame ();
        if (pos > 2) {
                pos -= 2;
                snap_to_internal (pos, -1, false);
@@ -6092,6 +6565,7 @@ Editor::do_insert_time ()
                get_preferred_edit_position(),
                d.distance(),
                opt,
+               d.all_playlists(),
                d.move_glued(),
                d.move_markers(),
                d.move_glued_markers(),
@@ -6101,8 +6575,10 @@ Editor::do_insert_time ()
 }
 
 void
-Editor::insert_time (framepos_t pos, framecnt_t frames, InsertTimeOption opt,
-                    bool ignore_music_glue, bool markers_too, bool glued_markers_too, bool locked_markers_too, bool tempo_too)
+Editor::insert_time (
+       framepos_t pos, framecnt_t frames, InsertTimeOption opt,
+       bool all_playlists, bool ignore_music_glue, bool markers_too, bool glued_markers_too, bool locked_markers_too, bool tempo_too
+       )
 {
        bool commit = false;
 
@@ -6112,26 +6588,49 @@ Editor::insert_time (framepos_t pos, framecnt_t frames, InsertTimeOption opt,
 
        begin_reversible_command (_("insert time"));
 
-       for (TrackSelection::iterator x = selection->tracks.begin(); x != selection->tracks.end(); ++x) {
+       TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
+
+       for (TrackViewList::iterator x = ts.begin(); x != ts.end(); ++x) {
+
                /* regions */
-               boost::shared_ptr<Playlist> pl = (*x)->playlist();
 
-               if (pl) {
+               /* don't operate on any playlist more than once, which could
+                * happen if "all playlists" is enabled, but there is more
+                * than 1 track using playlists "from" a given track.
+                */
 
-                       pl->clear_changes ();
-                       pl->clear_owned_changes ();
+               set<boost::shared_ptr<Playlist> > pl;
+
+               if (all_playlists) {
+                       RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*x);
+                       if (rtav) {
+                               vector<boost::shared_ptr<Playlist> > all = _session->playlists->playlists_for_track (rtav->track ());
+                               for (vector<boost::shared_ptr<Playlist> >::iterator p = all.begin(); p != all.end(); ++p) {
+                                       pl.insert (*p);
+                               }
+                       }
+               } else {
+                       if ((*x)->playlist ()) {
+                               pl.insert ((*x)->playlist ());
+                       }
+               }
+               
+               for (set<boost::shared_ptr<Playlist> >::iterator i = pl.begin(); i != pl.end(); ++i) {
+
+                       (*i)->clear_changes ();
+                       (*i)->clear_owned_changes ();
 
                        if (opt == SplitIntersected) {
-                               pl->split (pos);
+                               (*i)->split (pos);
                        }
 
-                       pl->shift (pos, frames, (opt == MoveIntersected), ignore_music_glue);
+                       (*i)->shift (pos, frames, (opt == MoveIntersected), ignore_music_glue);
 
                        vector<Command*> cmds;
-                       pl->rdiff (cmds);
+                       (*i)->rdiff (cmds);
                        _session->add_commands (cmds);
-                       
-                       _session->add_command (new StatefulDiffCommand (pl));
+
+                       _session->add_command (new StatefulDiffCommand (*i));
                        commit = true;
                }
 
@@ -6167,7 +6666,7 @@ Editor::insert_time (framepos_t pos, framecnt_t frames, InsertTimeOption opt,
                                        }
                                        moved = true;
                                }
-                               
+
                        }
 
                        if (was_locked) {
@@ -6204,7 +6703,7 @@ Editor::fit_selected_tracks ()
                         for (RegionSelection::iterator r = selection->regions.begin(); r != selection->regions.end(); ++r) {
                                 tvl.push_back (&(*r)->get_time_axis_view ());
                         }
-                        
+
                         if (!tvl.empty()) {
                                 fit_tracks (tvl);
                         }
@@ -6240,7 +6739,7 @@ Editor::fit_tracks (TrackViewList & tracks)
                ++visible_tracks;
        }
 
-       uint32_t h = (uint32_t) floor ((_canvas_height - child_heights - canvas_timebars_vsize) / visible_tracks);
+       uint32_t h = (uint32_t) floor ((_visible_canvas_height - child_heights) / visible_tracks);
        double first_y_pos = DBL_MAX;
 
        if (h < TimeAxisView::preset_height (HeightSmall)) {
@@ -6249,7 +6748,8 @@ Editor::fit_tracks (TrackViewList & tracks)
                return;
        }
 
-       undo_visual_stack.push_back (current_visual_state());
+       undo_visual_stack.push_back (current_visual_state (true));
+       no_save_visual = true;
 
        /* build a list of all tracks, including children */
 
@@ -6301,10 +6801,10 @@ Editor::fit_tracks (TrackViewList & tracks)
           request signal handler will cause the vertical adjustment setting to fail
        */
 
-       controls_layout.property_height () = full_canvas_height - canvas_timebars_vsize;
+       controls_layout.property_height () = _full_canvas_height;
        vertical_adjustment.set_value (first_y_pos);
 
-       redo_visual_stack.push_back (current_visual_state());
+       redo_visual_stack.push_back (current_visual_state (true));
 }
 
 void
@@ -6314,7 +6814,9 @@ Editor::save_visual_state (uint32_t n)
                visual_states.push_back (0);
        }
 
-       delete visual_states[n];
+       if (visual_states[n] != 0) {
+               delete visual_states[n];
+       }
 
        visual_states[n] = current_visual_state (true);
        gdk_beep ();
@@ -6337,38 +6839,19 @@ Editor::goto_visual_state (uint32_t n)
 void
 Editor::start_visual_state_op (uint32_t n)
 {
-       if (visual_state_op_connection.empty()) {
-               visual_state_op_connection = Glib::signal_timeout().connect (sigc::bind (sigc::mem_fun (*this, &Editor::end_visual_state_op), n), 1000);
-       }
-}
-
-void
-Editor::cancel_visual_state_op (uint32_t n)
-{
-       if (!visual_state_op_connection.empty()) {
-               visual_state_op_connection.disconnect();
-               goto_visual_state (n);
-       }  else {
-               //we land here if called from the menu OR if end_visual_state_op has been called
-               //so check if we are already in visual state n
-               // XXX not yet checking it at all, but redoing does not hurt
-               goto_visual_state (n);
-       }
-}
-
-bool
-Editor::end_visual_state_op (uint32_t n)
-{
-       visual_state_op_connection.disconnect();
        save_visual_state (n);
-
+       
        PopUp* pup = new PopUp (WIN_POS_MOUSE, 1000, true);
        char buf[32];
        snprintf (buf, sizeof (buf), _("Saved view %u"), n+1);
        pup->set_text (buf);
        pup->touch();
+}
 
-       return false; // do not call again
+void
+Editor::cancel_visual_state_op (uint32_t n)
+{
+        goto_visual_state (n);
 }
 
 void
@@ -6377,7 +6860,7 @@ Editor::toggle_region_mute ()
        if (_ignore_region_action) {
                return;
        }
-       
+
        RegionSelection rs = get_regions_from_selection_and_entered ();
 
        if (rs.empty ()) {
@@ -6389,20 +6872,20 @@ Editor::toggle_region_mute ()
        } else {
                begin_reversible_command (_("mute region"));
        }
-       
+
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
-               
+
                (*i)->region()->playlist()->clear_changes ();
                (*i)->region()->set_muted (!(*i)->region()->muted ());
                _session->add_command (new StatefulDiffCommand ((*i)->region()->playlist()));
-               
+
        }
-       
+
        commit_reversible_command ();
 }
 
 void
-Editor::join_regions ()
+Editor::combine_regions ()
 {
        /* foreach track with selected regions, take all selected regions
           and join them into a new region containing the subregions (as a
@@ -6412,6 +6895,10 @@ Editor::join_regions ()
        typedef set<RouteTimeAxisView*> RTVS;
        RTVS tracks;
 
+       if (selection->regions.empty()) {
+               return;
+       }
+
        for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
                RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&(*i)->get_time_axis_view());
 
@@ -6420,8 +6907,73 @@ Editor::join_regions ()
                }
        }
 
+       begin_reversible_command (_("combine regions"));
+
+       vector<RegionView*> new_selection;
+
        for (RTVS::iterator i = tracks.begin(); i != tracks.end(); ++i) {
-               (*i)->join_regions ();
+               RegionView* rv;
+
+               if ((rv = (*i)->combine_regions ()) != 0) {
+                       new_selection.push_back (rv);
+               }
+       }
+
+       selection->clear_regions ();
+       for (vector<RegionView*>::iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
+               selection->add (*i);
        }
+
+       commit_reversible_command ();
 }
 
+void
+Editor::uncombine_regions ()
+{
+       typedef set<RouteTimeAxisView*> RTVS;
+       RTVS tracks;
+
+       if (selection->regions.empty()) {
+               return;
+       }
+
+       for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
+               RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&(*i)->get_time_axis_view());
+
+               if (rtv) {
+                       tracks.insert (rtv);
+               }
+       }
+
+       begin_reversible_command (_("uncombine regions"));
+
+       for (RTVS::iterator i = tracks.begin(); i != tracks.end(); ++i) {
+               (*i)->uncombine_regions ();
+       }
+
+       commit_reversible_command ();
+}
+
+void
+Editor::toggle_midi_input_active (bool flip_others)
+{
+       bool onoff;
+       boost::shared_ptr<RouteList> rl (new RouteList);
+
+       for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+               RouteTimeAxisView *rtav = dynamic_cast<RouteTimeAxisView *>(*i);
+
+               if (!rtav) {
+                       continue;
+               }
+
+               boost::shared_ptr<MidiTrack> mt = rtav->midi_track();
+
+               if (mt) {
+                       rl->push_back (rtav->route());
+                       onoff = !mt->input_active();
+               }
+       }
+       
+       _session->set_exclusive_input_active (rl, onoff, flip_others);
+}