Remove internal edit mode and add "content" tool.
[ardour.git] / gtk2_ardour / editor_ops.cc
index d79813ab352edb3f6626336c6d6cfdb28a02da98..77dad5bf29de7806cd6caf7f6f2cd0f1aeefeefc 100644 (file)
@@ -24,6 +24,7 @@
 #include <cstdlib>
 #include <cmath>
 #include <string>
+#include <limits>
 #include <map>
 #include <set>
 
@@ -47,7 +48,9 @@
 #include "ardour/midi_track.h"
 #include "ardour/operations.h"
 #include "ardour/playlist_factory.h"
+#include "ardour/profile.h"
 #include "ardour/quantize.h"
+#include "ardour/legatize.h"
 #include "ardour/region_factory.h"
 #include "ardour/reverse.h"
 #include "ardour/session.h"
@@ -62,6 +65,7 @@
 #include "audio_region_view.h"
 #include "audio_streamview.h"
 #include "audio_time_axis.h"
+#include "automation_region_view.h"
 #include "automation_time_axis.h"
 #include "control_point.h"
 #include "debug.h"
 #include "gui_thread.h"
 #include "insert_time_dialog.h"
 #include "interthread_progress_window.h"
+#include "item_counts.h"
 #include "keyboard.h"
 #include "midi_region_view.h"
 #include "mixer_strip.h"
 #include "mouse_cursors.h"
 #include "normalize_dialog.h"
+#include "note.h"
+#include "paste_context.h"
 #include "patch_change_dialog.h"
 #include "quantize_dialog.h"
 #include "region_gain_line.h"
@@ -136,7 +143,7 @@ Editor::split_regions_at (framepos_t where, RegionSelection& regions)
 
        RegionSelection pre_selected_regions = selection->regions;
        bool working_on_selection = !pre_selected_regions.empty();
-       
+
        list<boost::shared_ptr<Playlist> > used_playlists;
        list<RouteTimeAxisView*> used_trackviews;
 
@@ -212,14 +219,14 @@ Editor::split_regions_at (framepos_t where, RegionSelection& regions)
                a = tmp;
        }
 
+       latest_regionviews.clear ();
+
        vector<sigc::connection> region_added_connections;
 
        for (list<RouteTimeAxisView*>::iterator i = used_trackviews.begin(); i != used_trackviews.end(); ++i) {
                region_added_connections.push_back ((*i)->view()->RegionViewAdded.connect (sigc::mem_fun(*this, &Editor::collect_new_region_view)));
        }
        
-       latest_regionviews.clear ();
-
        while (used_playlists.size() > 0) {
                list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
                (*i)->thaw();
@@ -229,21 +236,28 @@ Editor::split_regions_at (framepos_t where, RegionSelection& regions)
        for (vector<sigc::connection>::iterator c = region_added_connections.begin(); c != region_added_connections.end(); ++c) {
                (*c).disconnect ();
        }
-       
-       commit_reversible_command ();
 
        if (frozen){
                EditorThaw(); /* Emit Signal */
        }
 
-       //IFF we were working on selected regions, try to reinstate the other region selections that existed before the freeze/thaw.
-       _ignore_follow_edits = true;  //a split will change the region selection in mysterious ways;  its not practical or wanted to follow this edit
-       if( working_on_selection ) {
-               selection->add ( pre_selected_regions );
-               selection->add (latest_regionviews);  //these are the new regions created after the split
+       if (ARDOUR::Profile->get_mixbus()) {
+               //IFF we were working on selected regions, try to reinstate the other region selections that existed before the freeze/thaw.
+               _ignore_follow_edits = true;  //a split will change the region selection in mysterious ways;  its not practical or wanted to follow this edit
+               if( working_on_selection ) {
+                       selection->add ( pre_selected_regions );
+                       selection->add (latest_regionviews);  //these are the new regions created after the split
+               }
+               _ignore_follow_edits = false;
+       } else {
+               _ignore_follow_edits = true;
+               if( working_on_selection ) {
+                       selection->add (latest_regionviews);  //these are the new regions created after the split
+               }
+               _ignore_follow_edits = false;
        }
-       _ignore_follow_edits = false;
 
+       commit_reversible_command ();
 }
 
 /** Move one extreme of the current range selection.  If more than one range is selected,
@@ -644,7 +658,7 @@ Editor::build_region_boundary_cache ()
                break;
        default:
                fatal << string_compose (_("build_region_boundary_cache called with snap_type = %1"), _snap_type) << endmsg;
-               /*NOTREACHED*/
+               abort(); /*NOTREACHED*/
                return;
        }
 
@@ -1365,7 +1379,7 @@ Editor::scroll_tracks_up_line ()
 bool
 Editor::scroll_down_one_track ()
 {
-       TrackViewList::reverse_iterator next = track_views.rbegin();
+       TrackViewList::reverse_iterator next = track_views.rend();
        std::pair<TimeAxisView*,double> res;
        const double top_of_trackviews = vertical_adjustment.get_value();
 
@@ -1374,10 +1388,6 @@ Editor::scroll_down_one_track ()
                        continue;
                }
 
-               next = t;
-               if (next != track_views.rbegin()) {
-                       --next; // moves "next" towards the lower/later tracks since it is a reverse iterator
-               }
 
                /* If this is the upper-most visible trackview, we want to display
                   the one above it (next)
@@ -1388,11 +1398,12 @@ Editor::scroll_down_one_track ()
                if (res.first) {
                        break;
                }
+               next = t;
        }
 
        /* move to the track below the first one that covers the */
        
-       if (next != track_views.rbegin()) {
+       if (next != track_views.rend()) {
                ensure_time_axis_view_is_visible (**next, true);
                return true;
        }
@@ -1531,7 +1542,7 @@ Editor::temporal_zoom (framecnt_t fpp)
        // would be 4147200000 samples, so 2592000 samples per pixel.
 
        nfpp = min (fpp, (framecnt_t) 2592000);
-       nfpp = max ((framecnt_t) 1, fpp);
+       nfpp = max ((framecnt_t) 1, nfpp);
 
        new_page_size = (framepos_t) floor (_visible_canvas_width * nfpp);
        half_page_size = new_page_size / 2;
@@ -1638,14 +1649,14 @@ Editor::calc_extra_zoom_edges(framepos_t &start, framepos_t &end)
        */
 
        GdkScreen* screen = gdk_screen_get_default ();
-       gint pixwidth = gdk_screen_get_width (screen);
-       gint mmwidth = gdk_screen_get_width_mm (screen);
-       double pix_per_mm = (double) pixwidth/ (double) mmwidth;
-       double one_centimeter_in_pixels = pix_per_mm * 10.0;
+       const gint pixwidth = gdk_screen_get_width (screen);
+       const gint mmwidth = gdk_screen_get_width_mm (screen);
+       const double pix_per_mm = (double) pixwidth/ (double) mmwidth;
+       const double one_centimeter_in_pixels = pix_per_mm * 10.0;
 
-       framepos_t range = end - start;
-       double new_fpp = (double) range / (double) _visible_canvas_width;
-       framepos_t extra_samples = (framepos_t) floor (one_centimeter_in_pixels * new_fpp);
+       const framepos_t range = end - start;
+       const framecnt_t new_fpp = (framecnt_t) ceil ((double) range / (double) _visible_canvas_width);
+       const framepos_t extra_samples = (framepos_t) floor (one_centimeter_in_pixels * new_fpp);
 
        if (start > extra_samples) {
                start -= extra_samples;
@@ -1660,7 +1671,6 @@ Editor::calc_extra_zoom_edges(framepos_t &start, framepos_t &end)
        }
 }
 
-
 void
 Editor::temporal_zoom_region (bool both_axes)
 {
@@ -1691,7 +1701,7 @@ Editor::temporal_zoom_region (bool both_axes)
                return;
        }
 
-       calc_extra_zoom_edges(start, end);
+       calc_extra_zoom_edges (start, end);
 
        /* if we're zooming on both axes we need to save track heights etc.
         */
@@ -1752,7 +1762,7 @@ Editor::temporal_zoom_selection (bool both_axes)
                        fit_selected_tracks();
 
        } else {
-               temporal_zoom_region(both_axes);
+               temporal_zoom_region (both_axes);
        }
 
 
@@ -1800,9 +1810,9 @@ Editor::temporal_zoom_by_frame (framepos_t start, framepos_t end)
 
        framepos_t range = end - start;
 
-       double const new_fpp = (double) range / (double) _visible_canvas_width;
-
-       framepos_t new_page = (framepos_t) floor (_visible_canvas_width * new_fpp);
+       const framecnt_t new_fpp = (framecnt_t) ceil ((double) range / (double) _visible_canvas_width);
+       
+       framepos_t new_page = range;
        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));
 
@@ -1924,12 +1934,14 @@ Editor::add_location_from_selection ()
        _session->locations()->next_available_name(rangename,"selection");
        Location *location = new Location (*_session, start, end, rangename, Location::IsRangeMarker);
 
-       _session->begin_reversible_command (_("add marker"));
+       begin_reversible_command (_("add marker"));
+       
        XMLNode &before = _session->locations()->get_state();
        _session->locations()->add (location, true);
        XMLNode &after = _session->locations()->get_state();
        _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -1944,12 +1956,14 @@ Editor::add_location_mark (framepos_t where)
                return;
        }
        Location *location = new Location (*_session, where, where, markername, Location::IsMark);
-       _session->begin_reversible_command (_("add marker"));
+       begin_reversible_command (_("add marker"));
+       
        XMLNode &before = _session->locations()->get_state();
        _session->locations()->add (location, true);
        XMLNode &after = _session->locations()->get_state();
        _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -1964,7 +1978,8 @@ Editor::remove_location_at_playhead_cursor ()
        if (_session) {
 
                //set up for undo
-               _session->begin_reversible_command (_("remove marker"));
+               begin_reversible_command (_("remove marker"));
+               
                XMLNode &before = _session->locations()->get_state();
                bool removed = false;
 
@@ -1982,7 +1997,8 @@ Editor::remove_location_at_playhead_cursor ()
                if (removed) {
                        XMLNode &after = _session->locations()->get_state();
                        _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
-                       _session->commit_reversible_command ();
+                       
+                       commit_reversible_command ();
                }
        }
 }
@@ -1997,7 +2013,8 @@ Editor::add_locations_from_region ()
                return;
        }
 
-       _session->begin_reversible_command (selection->regions.size () > 1 ? _("add markers") : _("add marker"));
+       begin_reversible_command (selection->regions.size () > 1 ? _("add markers") : _("add marker"));
+       
        XMLNode &before = _session->locations()->get_state();
 
        for (RegionSelection::iterator i = rs.begin (); i != rs.end (); ++i) {
@@ -2011,7 +2028,8 @@ Editor::add_locations_from_region ()
 
        XMLNode &after = _session->locations()->get_state();
        _session->add_command (new MementoCommand<Locations>(*(_session->locations()), &before, &after));
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 /** Add a single range marker around all selected regions */
@@ -2024,7 +2042,8 @@ Editor::add_location_from_region ()
                return;
        }
 
-       _session->begin_reversible_command (_("add marker"));
+       begin_reversible_command (_("add marker"));
+       
        XMLNode &before = _session->locations()->get_state();
 
        string markername;
@@ -2047,7 +2066,8 @@ Editor::add_location_from_region ()
 
        XMLNode &after = _session->locations()->get_state();
        _session->add_command (new MementoCommand<Locations>(*(_session->locations()), &before, &after));
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 /* MARKS */
@@ -2103,12 +2123,14 @@ void
 Editor::clear_markers ()
 {
        if (_session) {
-               _session->begin_reversible_command (_("clear markers"));
+               begin_reversible_command (_("clear markers"));
+               
                XMLNode &before = _session->locations()->get_state();
                _session->locations()->clear_markers ();
                XMLNode &after = _session->locations()->get_state();
                _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
-               _session->commit_reversible_command ();
+               
+               commit_reversible_command ();
        }
 }
 
@@ -2116,27 +2138,30 @@ void
 Editor::clear_ranges ()
 {
        if (_session) {
-               _session->begin_reversible_command (_("clear ranges"));
+               begin_reversible_command (_("clear ranges"));
+               
                XMLNode &before = _session->locations()->get_state();
 
                _session->locations()->clear_ranges ();
 
                XMLNode &after = _session->locations()->get_state();
                _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
-               _session->commit_reversible_command ();
+               
+               commit_reversible_command ();
        }
 }
 
 void
 Editor::clear_locations ()
 {
-       _session->begin_reversible_command (_("clear locations"));
+       begin_reversible_command (_("clear locations"));
+       
        XMLNode &before = _session->locations()->get_state();
        _session->locations()->clear ();
        XMLNode &after = _session->locations()->get_state();
        _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
-       _session->commit_reversible_command ();
-       _session->locations()->clear ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -2702,6 +2727,7 @@ static void
 add_if_covered (RegionView* rv, const AudioRange* ar, RegionSelection* rs)
 {
        switch (rv->region()->coverage (ar->start, ar->end - 1)) {
+       // n.b. -1 because AudioRange::end is one past the end, but coverage expects inclusive ranges
        case Evoral::OverlapNone:
                break;
        default:
@@ -3827,44 +3853,21 @@ Editor::cut_copy (CutCopyOp op)
                return;
        }
 
-       if (internal_editing()) {
-
-               switch (effective_mouse_mode()) {
-               case MouseObject:
-               case MouseRange:
-                       begin_reversible_command (opname + ' ' + X_("MIDI"));
-                       cut_copy_midi (op);
-                       commit_reversible_command ();
-                       break;
-               default:
-                       break;
-               }
-
+       switch (mouse_mode) {
+       case MouseDraw:
+       case MouseContent:
+               begin_reversible_command (opname + ' ' + X_("MIDI"));
+               cut_copy_midi (op);
+               commit_reversible_command ();
                return;
+       default:
+               break;
        }
 
        bool did_edit = false;
 
-       if (!selection->points.empty()) {
-               begin_reversible_command (opname + _(" points"));
-               did_edit = true;
-               cut_copy_points (op);
-               if (op == Cut || op == Delete) {
-                       selection->clear_points ();
-               }
-       } else if (!selection->regions.empty() || !selection->points.empty()) {
-
-               string thing_name;
-
-               if (selection->regions.empty()) {
-                       thing_name = _("points");
-               } else if (selection->points.empty()) {
-                       thing_name = _("regions");
-               } else {
-                       thing_name = _("objects");
-               }
-       
-               begin_reversible_command (opname + ' ' + thing_name);
+       if (!selection->regions.empty() || !selection->points.empty()) {
+               begin_reversible_command (opname + ' ' + _("objects"));
                did_edit = true;
 
                if (!selection->regions.empty()) {
@@ -3891,7 +3894,7 @@ Editor::cut_copy (CutCopyOp op)
                        selection->set (start, end);
                }
        } else if (!selection->time.empty()) {
-               begin_reversible_command (opname + _(" range"));
+               begin_reversible_command (opname + ' ' + _("range"));
 
                did_edit = true;
                cut_copy_ranges (op);
@@ -3902,6 +3905,9 @@ Editor::cut_copy (CutCopyOp op)
        }
        
        if (did_edit) {
+               /* reset repeated paste state */
+               paste_count    = 0;
+               last_paste_pos = 0;
                commit_reversible_command ();   
        }
        
@@ -3911,10 +3917,11 @@ Editor::cut_copy (CutCopyOp op)
 }
 
 struct AutomationRecord {
-       AutomationRecord () : state (0) {}
-       AutomationRecord (XMLNode* s) : state (s) {}
+       AutomationRecord () : state (0) , line(NULL) {}
+       AutomationRecord (XMLNode* s, const AutomationLine* l) : state (s) , line (l) {}
        
        XMLNode* state; ///< state before any operation
+       const AutomationLine* line; ///< line this came from
        boost::shared_ptr<Evoral::ControlList> copy; ///< copied events for the cut buffer
 };
 
@@ -3922,7 +3929,7 @@ struct AutomationRecord {
  *  @param op Operation (Cut, Copy or Clear)
  */
 void
-Editor::cut_copy_points (CutCopyOp op)
+Editor::cut_copy_points (Editing::CutCopyOp op, Evoral::MusicalTime earliest, bool midi)
 {
        if (selection->points.empty ()) {
                return;
@@ -3937,12 +3944,13 @@ Editor::cut_copy_points (CutCopyOp op)
 
        /* 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();
+               const AutomationLine&                   line = (*i)->line();
+               const boost::shared_ptr<AutomationList> al   = 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 ());
+                       lists[al] = AutomationRecord (&al->get_state (), &line);
                }
        }
 
@@ -3951,21 +3959,46 @@ Editor::cut_copy_points (CutCopyOp op)
                   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 ());
+                       i->second.copy = i->first->create (i->first->parameter (), i->first->descriptor());
                }
 
                /* Add all selected points to the relevant copy ControlLists */
+               framepos_t start = std::numeric_limits<framepos_t>::max();
                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);
+                       AutomationList::const_iterator    j  = (*i)->model();
+
+                       lists[al].copy->fast_simple_add ((*j)->when, (*j)->value);
+                       if (midi) {
+                               /* Update earliest MIDI start time in beats */
+                               earliest = std::min(earliest,  Evoral::MusicalTime((*j)->when));
+                       } else {
+                               /* Update earliest session start time in frames */
+                               start = std::min(start, (*i)->line().session_position(j));
+                       }
+               }
+
+               /* Snap start time backwards, so copy/paste is snap aligned. */
+               if (midi) {
+                       if (earliest == Evoral::MusicalTime::max()) {
+                               earliest = Evoral::MusicalTime();  // Weird... don't offset
+                       }
+                       earliest.round_down_to_beat();
+               } else {
+                       if (start == std::numeric_limits<double>::max()) {
+                               start = 0;  // Weird... don't offset
+                       }
+                       snap_to(start, RoundDownMaybe);
                }
 
+               const double line_offset = midi ? earliest.to_double() : start;
                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;
+                       /* Correct this copy list so that it is relative to the earliest
+                          start time, so relative ordering between points is preserved
+                          when copying from several lists and the paste starts at the
+                          earliest copied piece of data. */
                        for (AutomationList::iterator j = i->second.copy->begin(); j != i->second.copy->end(); ++j) {
-                               (*j)->when -= start;
+                               (*j)->when -= line_offset;
                        }
 
                        /* And add it to the cut buffer */
@@ -4001,13 +4034,27 @@ Editor::cut_copy_points (CutCopyOp op)
 void
 Editor::cut_copy_midi (CutCopyOp op)
 {
+       Evoral::MusicalTime earliest = Evoral::MusicalTime::max();
        for (MidiRegionSelection::iterator i = selection->midi_regions.begin(); i != selection->midi_regions.end(); ++i) {
-               MidiRegionView* mrv = *i;
-               mrv->cut_copy_clear (op);
-       }
-}
+               MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*i);
+               if (mrv) {
+                       if (!mrv->selection().empty()) {
+                               earliest = std::min(earliest, (*mrv->selection().begin())->note()->time());
+                       }
+                       mrv->cut_copy_clear (op);
 
+                       /* XXX: not ideal, as there may be more than one track involved in the selection */
+                       _last_cut_copy_source_track = &mrv->get_time_axis_view();
+               }
+       }
 
+       if (!selection->points.empty()) {
+               cut_copy_points (op, earliest, true);
+               if (op == Cut || op == Delete) {
+                       selection->clear_points ();
+               }
+       }
+}
 
 struct lt_playlist {
     bool operator () (const PlaylistState& a, const PlaylistState& b) {
@@ -4030,6 +4077,8 @@ Editor::remove_clicked_region ()
                return;
        }
 
+       begin_reversible_command (_("remove region"));
+
        boost::shared_ptr<Playlist> playlist = clicked_routeview->playlist();
 
        playlist->clear_changes ();
@@ -4348,14 +4397,8 @@ Editor::paste_internal (framepos_t position, float times)
 {
         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("apparent paste position is %1\n", position));
 
-       if (internal_editing()) {
-               if (cut_buffer->midi_notes.empty()) {
-                       return;
-               }
-       } else {
-               if (cut_buffer->empty()) {
-                       return;
-               }
+       if (cut_buffer->empty(internal_editing())) {
+               return;
        }
 
        if (position == max_framepos) {
@@ -4363,45 +4406,102 @@ Editor::paste_internal (framepos_t position, float times)
                 DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("preferred edit position is %1\n", position));
        }
 
-       TrackViewList ts;
-       TrackViewList::iterator i;
-       size_t nth;
+       if (position == last_paste_pos) {
+               /* repeated paste in the same position */
+               ++paste_count;
+       } else {
+               /* paste in new location, reset repeated paste state */
+               paste_count = 0;
+               last_paste_pos = position;
+       }
 
        /* get everything in the correct order */
 
-       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 */
+       TrackViewList ts;
+       if (!selection->tracks.empty()) {
+               /* If there is a track selection, paste into exactly those tracks and
+                  only those tracks.  This allows the user to be explicit and override
+                  the below "do the reasonable thing" logic. */
                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;
-                  see discussion in mantis #3333.
-               */
-               ts.push_back (_last_cut_copy_source_track);
+       } else {
+               /* Figure out which track to base the paste at. */
+               TimeAxisView* base_track = NULL;
+               if (_edit_point == Editing::EditAtMouse && entered_track) {
+                       /* With the mouse edit point, paste onto the track under the mouse. */
+                       base_track = entered_track;
+               } else if (_edit_point == Editing::EditAtMouse && entered_regionview) {
+                       /* With the mouse edit point, paste onto the track of the region under the mouse. */
+                       base_track = &entered_regionview->get_time_axis_view();
+               } else if (_last_cut_copy_source_track) {
+                       /* Paste to the track that the cut/copy came from (see mantis #333). */
+                       base_track = _last_cut_copy_source_track;
+               } else {
+                       /* This is "impossible" since we've copied... well, do nothing. */
+                       return;
+               }
+
+               /* Walk up to parent if necessary, so base track is a route. */
+               while (base_track->get_parent()) {
+                       base_track = base_track->get_parent();
+               }
+
+               /* Add base track and all tracks below it.  The paste logic will select
+                  the appropriate object types from the cut buffer in relative order. */
+               for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+                       if ((*i)->order() >= base_track->order()) {
+                               ts.push_back(*i);
+                       }
+               }
+
+               /* Sort tracks so the nth track of type T will pick the nth object of type T. */
+               sort_track_selection (ts);
+
+               /* Add automation children of each track in order, for pasting several lines. */
+               for (TrackViewList::iterator i = ts.begin(); i != ts.end();) {
+                       /* Add any automation children for pasting several lines */
+                       RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(*i++);
+                       if (!rtv) {
+                               continue;
+                       }
+
+                       typedef RouteTimeAxisView::AutomationTracks ATracks;
+                       const ATracks& atracks = rtv->automation_tracks();
+                       for (ATracks::const_iterator a = atracks.begin(); a != atracks.end(); ++a) {
+                               i = ts.insert(i, a->second.get());
+                               ++i;
+                       }
+               }
+
+               /* We now have a list of trackviews starting at base_track, including
+                  automation children, in the order shown in the editor, e.g. R1,
+                  R1.A1, R1.A2, R2, R2.A1, ... */
        }
 
-       if (internal_editing ()) {
+       if (ts.size() == 1 && cut_buffer->lines.size() == 1 &&
+           dynamic_cast<AutomationTimeAxisView*>(ts.front())) {
+           /* Only one line copied, and one automation track selected.  Do a
+              "greedy" paste from one automation type to another. */
 
-               /* undo/redo is handled by individual tracks/regions */
+           begin_reversible_command (Operations::paste);
 
-               for (nth = 0, i = ts.begin(); i != ts.end(); ++i, ++nth) {
+           PasteContext ctx(paste_count, times, ItemCounts(), true);
+           ts.front()->paste (position, *cut_buffer, ctx);
 
-                       RegionSelection rs;
-                       RegionSelection::iterator r;
-                       MidiNoteSelection::iterator cb;
+           commit_reversible_command ();
 
-                       get_regions_at (rs, position, ts);
+       } else if (internal_editing ()) {
 
-                       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);
-                               if (mrv) {
-                                       mrv->paste (position, times, **cb);
-                                       ++cb;
-                               }
+               /* undo/redo is handled by individual tracks/regions */
+
+               RegionSelection rs;
+               get_regions_at (rs, position, ts);
+
+               PasteContext ctx(paste_count, times, ItemCounts(), false);
+               for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
+                       MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (*r);
+                       if (mrv) {
+                               mrv->paste (position, *cut_buffer, ctx);
                        }
                }
 
@@ -4411,8 +4511,9 @@ Editor::paste_internal (framepos_t position, float times)
 
                begin_reversible_command (Operations::paste);
 
-               for (nth = 0, i = ts.begin(); i != ts.end(); ++i, ++nth) {
-                       (*i)->paste (position, times, *cut_buffer, nth);
+               PasteContext ctx(paste_count, times, ItemCounts(), false);
+               for (TrackViewList::iterator i = ts.begin(); i != ts.end(); ++i) {
+                       (*i)->paste (position, *cut_buffer, ctx);
                }
 
                commit_reversible_command ();
@@ -4452,11 +4553,11 @@ Editor::duplicate_some_regions (RegionSelection& regions, float times)
                foo.insert (foo.end(), latest_regionviews.begin(), latest_regionviews.end());
        }
 
-       commit_reversible_command ();
-
        if (!foo.empty()) {
                selection->set (foo);
        }
+
+       commit_reversible_command ();
 }
 
 void
@@ -4800,8 +4901,8 @@ Editor::apply_midi_note_edit_op_to_region (MidiOperator& op, MidiRegionView& mrv
        vector<Evoral::Sequence<Evoral::MusicalTime>::Notes> v;
        v.push_back (selected);
 
-       framepos_t pos_frames = mrv.midi_region()->position() - mrv.midi_region()->start();
-       double     pos_beats  = _session->tempo_map().framewalk_to_beats(0, pos_frames);
+       framepos_t          pos_frames = mrv.midi_region()->position() - mrv.midi_region()->start();
+       Evoral::MusicalTime pos_beats  = _session->tempo_map().framewalk_to_beats(0, pos_frames);
 
        return op (mrv.midi_region()->model(), pos_beats, v);
 }
@@ -4914,7 +5015,7 @@ Editor::quantize_region ()
        qd->hide ();
 
        if (r == Gtk::RESPONSE_OK) {
-               Quantize quant (*_session, qd->snap_start(), qd->snap_end(),
+               Quantize quant (qd->snap_start(), qd->snap_end(),
                                qd->start_grid_size(), qd->end_grid_size(),
                                qd->strength(), qd->swing(), qd->threshold());
 
@@ -4922,6 +5023,36 @@ Editor::quantize_region ()
        }
 }
 
+void
+Editor::legatize_region (bool shrink_only)
+{
+       int selected_midi_region_cnt = 0;
+
+       if (!_session) {
+               return;
+       }
+
+       RegionSelection rs = get_regions_from_selection_and_entered ();
+
+       if (rs.empty()) {
+               return;
+       }
+
+       for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
+               MidiRegionView* const mrv = dynamic_cast<MidiRegionView*> (*r);
+               if (mrv) {
+                       selected_midi_region_cnt++;
+               }
+       }
+
+       if (selected_midi_region_cnt == 0) {
+               return;
+       }
+
+       Legatize legatize(shrink_only);
+       apply_midi_note_edit_op (legatize);
+}
+
 void
 Editor::insert_patch_change (bool from_context)
 {
@@ -4939,7 +5070,7 @@ Editor::insert_patch_change (bool from_context)
        */
        MidiRegionView* first = dynamic_cast<MidiRegionView*> (rs.front ());
 
-       Evoral::PatchChange<Evoral::MusicalTime> empty (0, 0, 0, 0);
+       Evoral::PatchChange<Evoral::MusicalTime> empty (Evoral::MusicalTime(), 0, 0, 0);
         PatchChangeDialog d (0, _session, empty, first->instrument_info(), Gtk::Stock::ADD);
 
        if (d.run() == RESPONSE_CANCEL) {
@@ -5053,8 +5184,8 @@ Editor::reset_region_gain_envelopes ()
                return;
        }
 
-       _session->begin_reversible_command (_("reset region gain"));
-
+       begin_reversible_command (_("reset region gain"));
+       
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
                if (arv) {
@@ -5065,8 +5196,8 @@ Editor::reset_region_gain_envelopes ()
                        _session->add_command (new MementoCommand<AutomationList>(*arv->audio_region()->envelope().get(), &before, &alist->get_state()));
                }
        }
-
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -5106,8 +5237,8 @@ Editor::toggle_gain_envelope_active ()
                return;
        }
 
-       _session->begin_reversible_command (_("region gain envelope active"));
-
+       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) {
@@ -5116,8 +5247,8 @@ Editor::toggle_gain_envelope_active ()
                        _session->add_command (new StatefulDiffCommand (arv->region()));
                }
        }
-
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -5133,15 +5264,15 @@ Editor::toggle_region_lock ()
                return;
        }
 
-       _session->begin_reversible_command (_("toggle region lock"));
-
+       begin_reversible_command (_("toggle region lock"));
+       
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                (*i)->region()->clear_changes ();
                (*i)->region()->set_locked (!(*i)->region()->locked());
                _session->add_command (new StatefulDiffCommand ((*i)->region()));
        }
-
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -5157,15 +5288,15 @@ Editor::toggle_region_video_lock ()
                return;
        }
 
-       _session->begin_reversible_command (_("Toggle Video Lock"));
-
+       begin_reversible_command (_("Toggle Video Lock"));
+       
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                (*i)->region()->clear_changes ();
                (*i)->region()->set_video_locked (!(*i)->region()->video_locked());
                _session->add_command (new StatefulDiffCommand ((*i)->region()));
        }
-
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -5181,16 +5312,16 @@ Editor::toggle_region_lock_style ()
                return;
        }
 
-       _session->begin_reversible_command (_("region lock style"));
-
+       begin_reversible_command (_("region lock style"));
+       
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                (*i)->region()->clear_changes ();
                PositionLockStyle const ns = (*i)->region()->position_lock_style() == AudioTime ? MusicTime : AudioTime;
                (*i)->region()->set_position_lock_style (ns);
                _session->add_command (new StatefulDiffCommand ((*i)->region()));
        }
-
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -5206,15 +5337,15 @@ Editor::toggle_opaque_region ()
                return;
        }
 
-       _session->begin_reversible_command (_("change region opacity"));
-
+       begin_reversible_command (_("change region opacity"));
+       
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                (*i)->region()->clear_changes ();
                (*i)->region()->set_opaque (!(*i)->region()->opaque());
                _session->add_command (new StatefulDiffCommand ((*i)->region()));
        }
-
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -5786,6 +5917,34 @@ Editor::set_punch_from_selection ()
        set_punch_range (start, end,  _("set punch range from selection"));
 }
 
+void
+Editor::set_session_extents_from_selection ()
+{
+       if (_session == 0 || selection->time.empty()) {
+               return;
+       }
+
+       begin_reversible_command (_("set session start/stop from selection"));
+
+       framepos_t start = selection->time[clicked_selection].start;
+       framepos_t end = selection->time[clicked_selection].end;
+
+       Location* loc;
+       if ((loc = _session->locations()->session_range_location()) == 0) {
+               _session->set_session_extents ( start, end );  // this will create a new session range;  no need for UNDO
+       } else {
+               XMLNode &before = loc->get_state();
+
+               _session->set_session_extents ( start, end );
+
+               XMLNode &after = loc->get_state();
+
+               _session->add_command (new MementoCommand<Location>(*loc, &before, &after));
+
+               commit_reversible_command ();
+       }
+}
+
 void
 Editor::set_punch_from_edit_range ()
 {
@@ -5994,8 +6153,8 @@ Editor::split_region_at_transients ()
                return;
        }
 
-       _session->begin_reversible_command (_("split regions"));
-
+       begin_reversible_command (_("split regions"));
+       
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ) {
 
                RegionSelection::iterator tmp;
@@ -6012,8 +6171,8 @@ Editor::split_region_at_transients ()
 
                i = tmp;
        }
-
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 
 }
 
@@ -6201,14 +6360,14 @@ Editor::place_transient()
 
        framepos_t where = get_preferred_edit_position();
 
-       _session->begin_reversible_command (_("place transient"));
-
+       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 ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -6236,8 +6395,8 @@ Editor::snap_regions_to_grid ()
                return;
        }
 
-       _session->begin_reversible_command (_("snap regions to grid"));
-
+       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();
@@ -6260,8 +6419,8 @@ Editor::snap_regions_to_grid ()
                (*i)->thaw();
                used_playlists.pop_front();
        }
-
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -6319,8 +6478,8 @@ Editor::close_region_gaps ()
 
        /* Iterate over the region list and make adjacent regions overlap by crossfade_len_ms */
 
-       _session->begin_reversible_command (_("close region gaps"));
-
+       begin_reversible_command (_("close region gaps"));
+       
        int idx = 0;
        boost::shared_ptr<Region> last_region;
 
@@ -6359,8 +6518,8 @@ Editor::close_region_gaps ()
                (*i)->thaw();
                used_playlists.pop_front();
        }
-
-       _session->commit_reversible_command ();
+       
+       commit_reversible_command ();
 }
 
 void
@@ -6453,7 +6612,7 @@ Editor::playhead_forward_to_grid ()
        framepos_t pos = playhead_cursor->current_frame ();
        if (pos < max_framepos - 1) {
                pos += 2;
-               snap_to_internal (pos, 1, false);
+               snap_to_internal (pos, RoundUpAlways, false);
                _session->request_locate (pos);
        }
 }
@@ -6469,7 +6628,7 @@ Editor::playhead_backward_to_grid ()
        framepos_t pos = playhead_cursor->current_frame ();
        if (pos > 2) {
                pos -= 2;
-               snap_to_internal (pos, -1, false);
+               snap_to_internal (pos, RoundDownAlways, false);
                _session->request_locate (pos);
        }
 }
@@ -6565,6 +6724,7 @@ edit your ardour.rc file to set the\n\
                return;
        }
 
+       // XXX should be using gettext plural forms, maybe?
        if (ntracks > 1) {
                trackstr = _("tracks");
        } else {
@@ -6591,7 +6751,7 @@ edit your ardour.rc file to set the\n\
                }
        } else if (nbusses) {
                prompt  = string_compose (_("Do you really want to remove %1 %2?\n\n"
-                                           "This action cannot be undon, and the session file will be overwritten"),
+                                           "This action cannot be undone, and the session file will be overwritten"),
                                          nbusses, busstr);
        }
 
@@ -6967,7 +7127,7 @@ Editor::toggle_region_mute ()
 
                (*i)->region()->playlist()->clear_changes ();
                (*i)->region()->set_muted (!(*i)->region()->muted ());
-               _session->add_command (new StatefulDiffCommand ((*i)->region()->playlist()));
+               _session->add_command (new StatefulDiffCommand ((*i)->region()));
 
        }