tweak label alignment
[ardour.git] / gtk2_ardour / editor_mouse.cc
index cb9926d3a49cf7adff72e64b94532920d0e54cb4..b2ee2777cfea9845f34853fa41a7eef478f76f88 100644 (file)
 #include <set>
 #include <string>
 #include <algorithm>
+#include <bitset>
 
 #include "pbd/error.h"
 #include "pbd/enumwriter.h"
-#include <gtkmm2ext/utils.h>
-#include <gtkmm2ext/tearoff.h>
 #include "pbd/memento_command.h"
 #include "pbd/basename.h"
+#include "pbd/stateful_diff_command.h"
+
+#include "gtkmm2ext/bindings.h"
+#include "gtkmm2ext/utils.h"
+#include "gtkmm2ext/tearoff.h"
+
+#include "canvas/canvas.h"
+
+#include "ardour/audioregion.h"
+#include "ardour/operations.h"
+#include "ardour/playlist.h"
+#include "ardour/profile.h"
+#include "ardour/region_factory.h"
+#include "ardour/route.h"
+#include "ardour/session.h"
+#include "ardour/types.h"
 
 #include "ardour_ui.h"
 #include "actions.h"
 #include "rgb_macros.h"
 #include "control_point_dialog.h"
 #include "editor_drag.h"
-
-#include "ardour/types.h"
-#include "ardour/profile.h"
-#include "ardour/route.h"
-#include "ardour/audio_track.h"
-#include "ardour/audio_diskstream.h"
-#include "ardour/midi_diskstream.h"
-#include "ardour/playlist.h"
-#include "ardour/audioplaylist.h"
-#include "ardour/audioregion.h"
-#include "ardour/midi_region.h"
-#include "ardour/dB.h"
-#include "ardour/utils.h"
-#include "ardour/region_factory.h"
-#include "ardour/source_factory.h"
-#include "ardour/session.h"
-
-#include <bitset>
+#include "automation_region_view.h"
+#include "edit_note_dialog.h"
+#include "mouse_cursors.h"
+#include "editor_cursors.h"
+#include "verbose_cursor.h"
+#include "note.h"
 
 #include "i18n.h"
 
@@ -81,106 +84,130 @@ using namespace Editing;
 using Gtkmm2ext::Keyboard;
 
 bool
-Editor::mouse_frame (nframes64_t& where, bool& in_track_canvas) const
+Editor::mouse_frame (framepos_t& where, bool& in_track_canvas) const
 {
+        /* gdk_window_get_pointer() has X11's XQueryPointer semantics in that it only
+           pays attentions to subwindows. this means that menu windows are ignored, and 
+           if the pointer is in a menu, the return window from the call will be the
+           the regular subwindow *under* the menu.
+
+           this matters quite a lot if the pointer is moving around in a menu that overlaps
+           the track canvas because we will believe that we are within the track canvas
+           when we are not. therefore, we track enter/leave events for the track canvas
+           and allow that to override the result of gdk_window_get_pointer().
+        */
+
+        if (!within_track_canvas) {
+                return false;
+        }
+
        int x, y;
-       double wx, wy;
-       Gdk::ModifierType mask;
-       Glib::RefPtr<Gdk::Window> canvas_window = const_cast<Editor*>(this)->track_canvas->get_window();
-       Glib::RefPtr<const Gdk::Window> pointer_window;
+       Glib::RefPtr<Gdk::Window> canvas_window = const_cast<Editor*>(this)->_track_canvas->get_window();
 
        if (!canvas_window) {
                return false;
        }
 
-       pointer_window = canvas_window->get_pointer (x, y, mask);
+       Glib::RefPtr<const Gdk::Window> pointer_window = Gdk::Display::get_default()->get_window_at_pointer (x, y);
 
-       if (pointer_window == track_canvas->get_bin_window()) {
-               wx = x;
-               wy = y;
-               in_track_canvas = true;
+       if (!pointer_window) {
+               return false;
+       }
 
-       } else {
+       if (pointer_window != canvas_window && pointer_window != _time_bars_canvas->get_window()) {
                in_track_canvas = false;
-                       return false;
+               return false;
        }
 
+       in_track_canvas = true;
+
        GdkEvent event;
        event.type = GDK_BUTTON_RELEASE;
-       event.button.x = wx;
-       event.button.y = wy;
+       event.button.x = x;
+       event.button.y = y;
+
+       where = window_event_frame (&event, 0, 0);
 
-       where = event_frame (&event, 0, 0);
        return true;
 }
 
-nframes64_t
-Editor::event_frame (GdkEvent const * event, double* pcx, double* pcy) const
+framepos_t
+Editor::window_event_frame (GdkEvent const * event, double* pcx, double* pcy) const
 {
-       double cx, cy;
+       double x;
+       double y;
 
-       if (pcx == 0) {
-               pcx = &cx;
+       if (!gdk_event_get_coords (event, &x, &y)) {
+               return 0;
        }
-       if (pcy == 0) {
-               pcy = &cy;
+
+       /* event coordinates are in window units, so convert to canvas
+        * (i.e. account for scrolling)
+        */
+
+       ArdourCanvas::Duple d = _track_canvas->window_to_canvas (ArdourCanvas::Duple (x, y));
+
+       if (pcx) {
+               *pcx = d.x;
        }
 
-       *pcx = 0;
-       *pcy = 0;
+       if (pcy) {
+               *pcy = d.y;
+       }
 
-       switch (event->type) {
-       case GDK_BUTTON_RELEASE:
-       case GDK_BUTTON_PRESS:
-       case GDK_2BUTTON_PRESS:
-       case GDK_3BUTTON_PRESS:
-               *pcx = event->button.x;
-               *pcy = event->button.y;
-               _trackview_group->w2i(*pcx, *pcy);
-               break;
-       case GDK_MOTION_NOTIFY:
-               *pcx = event->motion.x;
-               *pcy = event->motion.y;
-               _trackview_group->w2i(*pcx, *pcy);
-               break;
-       case GDK_ENTER_NOTIFY:
-       case GDK_LEAVE_NOTIFY:
-               track_canvas->w2c(event->crossing.x, event->crossing.y, *pcx, *pcy);
-               break;
-       case GDK_KEY_PRESS:
-       case GDK_KEY_RELEASE:
-               // track_canvas->w2c(event->key.x, event->key.y, *pcx, *pcy);
-               break;
-       default:
-               warning << string_compose (_("Editor::event_frame() used on unhandled event type %1"), event->type) << endmsg;
-               break;
+       return pixel_to_sample (d.x);
+}
+
+framepos_t
+Editor::canvas_event_frame (GdkEvent const * event, double* pcx, double* pcy) const
+{
+       double x;
+       double y;
+
+       /* event coordinates are already in canvas units */
+
+       if (!gdk_event_get_coords (event, &x, &y)) {
+               cerr << "!NO c COORDS for event type " << event->type << endl;
+               return 0;
+       }
+
+       if (pcx) {
+               *pcx = x;
        }
 
-       /* note that pixel_to_frame() never returns less than zero, so even if the pixel
+       if (pcy) {
+               *pcy = y;
+       }
+
+       /* note that pixel_to_sample() never returns less than zero, so even if the pixel
           position is negative (as can be the case with motion events in particular),
           the frame location is always positive.
        */
 
-       return pixel_to_frame (*pcx);
+       return pixel_to_sample (x);
 }
 
 Gdk::Cursor*
 Editor::which_grabber_cursor ()
 {
-       Gdk::Cursor* c = grabber_cursor;
+       Gdk::Cursor* c = _cursors->grabber;
 
        if (_internal_editing) {
                switch (mouse_mode) {
-               case MouseRange:
-                       c = midi_pencil_cursor;
+               case MouseDraw:
+                       c = _cursors->midi_pencil;
                        break;
 
                case MouseObject:
-                       c = grabber_cursor;
+                       c = _cursors->grabber_note;
                        break;
 
                case MouseTimeFX:
-                       c = midi_resize_cursor;
+                       c = _cursors->midi_resize;
+                       break;
+                       
+               case MouseRange:
+                       c = _cursors->grabber_note;
                        break;
 
                default:
@@ -191,9 +218,13 @@ Editor::which_grabber_cursor ()
 
                switch (_edit_point) {
                case EditAtMouse:
-                       c = grabber_edit_point_cursor;
+                       c = _cursors->grabber_edit_point;
                        break;
                default:
+                       boost::shared_ptr<Movable> m = _movable.lock();
+                       if (m && m->locked()) {
+                               c = _cursors->speaker;
+                       }
                        break;
                }
        }
@@ -202,76 +233,129 @@ Editor::which_grabber_cursor ()
 }
 
 void
-Editor::set_canvas_cursor ()
+Editor::set_current_trimmable (boost::shared_ptr<Trimmable> t)
 {
-       if (_internal_editing) {
+       boost::shared_ptr<Trimmable> st = _trimmable.lock();
 
-               switch (mouse_mode) {
-               case MouseRange:
-                       current_canvas_cursor = midi_pencil_cursor;
-                       break;
+       if (!st || st == t) {
+               _trimmable = t;
+               set_canvas_cursor ();
+       }
+}
 
-               case MouseObject:
-                       current_canvas_cursor = which_grabber_cursor();
-                       break;
+void
+Editor::set_current_movable (boost::shared_ptr<Movable> m)
+{
+       boost::shared_ptr<Movable> sm = _movable.lock();
 
-               case MouseTimeFX:
-                       current_canvas_cursor = midi_resize_cursor;
-                       break;
+       if (!sm || sm != m) {
+               _movable = m;
+               set_canvas_cursor ();
+       }
+}
 
-               default:
-                       return;
+void
+Editor::set_canvas_cursor ()
+{
+       switch (mouse_mode) {
+       case MouseRange:
+               current_canvas_cursor = _cursors->selector;
+               if (_internal_editing) {
+                       current_canvas_cursor = which_grabber_cursor();
                }
+               break;
 
-       } else {
+       case MouseObject:
+               current_canvas_cursor = which_grabber_cursor();
+               break;
 
-               switch (mouse_mode) {
-               case MouseRange:
-                       current_canvas_cursor = selector_cursor;
-                       break;
+       case MouseDraw:
+               current_canvas_cursor = _cursors->midi_pencil;
+               break;
 
-               case MouseObject:
-                       current_canvas_cursor = which_grabber_cursor();
-                       break;
+       case MouseGain:
+               current_canvas_cursor = _cursors->cross_hair;
+               break;
 
-               case MouseGain:
-                       current_canvas_cursor = cross_hair_cursor;
-                       break;
+       case MouseZoom:
+               if (Keyboard::the_keyboard().key_is_down (GDK_Control_L)) {
+                       current_canvas_cursor = _cursors->zoom_out;
+               } else {
+                       current_canvas_cursor = _cursors->zoom_in;
+               }
+               break;
 
-               case MouseZoom:
-                       current_canvas_cursor = zoom_cursor;
-                       break;
+       case MouseTimeFX:
+               current_canvas_cursor = _cursors->time_fx; // just use playhead
+               break;
 
-               case MouseTimeFX:
-                       current_canvas_cursor = time_fx_cursor; // just use playhead
-                       break;
+       case MouseAudition:
+               current_canvas_cursor = _cursors->speaker;
+               break;
+       }
 
-               case MouseAudition:
-                       current_canvas_cursor = speaker_cursor;
+       if (!_internal_editing) {
+               switch (_join_object_range_state) {
+               case JOIN_OBJECT_RANGE_NONE:
+                       break;
+               case JOIN_OBJECT_RANGE_OBJECT:
+                       current_canvas_cursor = which_grabber_cursor ();
+                       break;
+               case JOIN_OBJECT_RANGE_RANGE:
+                       current_canvas_cursor = _cursors->selector;
                        break;
                }
        }
 
-       switch (_join_object_range_state) {
-       case JOIN_OBJECT_RANGE_NONE:
-               break;
-       case JOIN_OBJECT_RANGE_OBJECT:
-               current_canvas_cursor = which_grabber_cursor ();
-               break;
-       case JOIN_OBJECT_RANGE_RANGE:
-               current_canvas_cursor = selector_cursor;
-               break;
-       }
+       /* up-down cursor as a cue that automation can be dragged up and down when in join object/range mode */
+       if (!_internal_editing && get_smart_mode() ) {
+
+               double x, y;
+               get_pointer_position (x, y);
 
-       if (is_drawable()) {
-               track_canvas->get_window()->set_cursor(*current_canvas_cursor);
+               if (x >= 0 && y >= 0) {
+                       
+                       vector<ArdourCanvas::Item const *> items;
+                       
+                       _track_canvas->root()->add_items_at_point (ArdourCanvas::Duple (x,y), items);
+                       
+                       // first item will be the upper most 
+                       
+                       if (!items.empty()) {
+                               const ArdourCanvas::Item* i = items.front();
+                               
+                               if (i && i->parent() && i->parent()->get_data (X_("timeselection"))) {
+                                       pair<TimeAxisView*, int> tvp = trackview_by_y_position (_last_motion_y);
+                                       if (dynamic_cast<AutomationTimeAxisView*> (tvp.first)) {
+                                               current_canvas_cursor = _cursors->up_down;
+                                       }
+                               }
+                       }
+               }
        }
+
+       set_canvas_cursor (current_canvas_cursor, true);
+}
+
+void
+Editor::mouse_mode_object_range_toggled()
+{
+       MouseMode m = mouse_mode;
+       
+       Glib::RefPtr<Action> act = ActionManager::get_action (X_("MouseMode"), X_("set-mouse-mode-range"));
+       assert (act);
+       Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (act);
+       assert (tact);
+       if (tact->get_active())
+               m = MouseObject;  //Smart mode turned to ON, force editing to Object mode
+       
+       set_mouse_mode(m, true);  //call this so the button styles can get updated
 }
 
 void
 Editor::set_mouse_mode (MouseMode m, bool force)
 {
-       if (_drag) {
+       if (_drags->active ()) {
                return;
        }
 
@@ -290,6 +374,10 @@ Editor::set_mouse_mode (MouseMode m, bool force)
                act = ActionManager::get_action (X_("MouseMode"), X_("set-mouse-mode-object"));
                break;
 
+       case MouseDraw:
+               act = ActionManager::get_action (X_("MouseMode"), X_("set-mouse-mode-draw"));
+               break;
+
        case MouseGain:
                act = ActionManager::get_action (X_("MouseMode"), X_("set-mouse-mode-gain"));
                break;
@@ -315,40 +403,102 @@ Editor::set_mouse_mode (MouseMode m, bool force)
        /* go there and back to ensure that the toggled handler is called to set up mouse_mode */
        tact->set_active (false);
        tact->set_active (true);
+
+       //NOTE:  this will result in a call to mouse_mode_toggled which does the heavy lifting
 }
 
 void
 Editor::mouse_mode_toggled (MouseMode m)
 {
-       mouse_mode = m;
+       Glib::RefPtr<Action> act;
+       Glib::RefPtr<ToggleAction> tact;
 
-       instant_save ();
+       switch (m) {
+       case MouseRange:
+               act = ActionManager::get_action (X_("MouseMode"), X_("set-mouse-mode-range"));
+               break;
 
-       if (mouse_mode != MouseRange && _join_object_range_state == JOIN_OBJECT_RANGE_NONE) {
+       case MouseObject:
+               act = ActionManager::get_action (X_("MouseMode"), X_("set-mouse-mode-object"));
+               break;
 
-               /* in all modes except range and joined object/range, hide the range selection,
-                  show the object (region) selection.
-               */
+       case MouseDraw:
+               act = ActionManager::get_action (X_("MouseMode"), X_("set-mouse-mode-draw"));
+               break;
 
-               for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
-                       (*i)->set_should_show_selection (true);
-               }
-               for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
-                       (*i)->hide_selection ();
-               }
+       case MouseGain:
+               act = ActionManager::get_action (X_("MouseMode"), X_("set-mouse-mode-gain"));
+               break;
 
-       } else {
+       case MouseZoom:
+               act = ActionManager::get_action (X_("MouseMode"), X_("set-mouse-mode-zoom"));
+               break;
 
-               /*
-                  in range or object/range mode, show the range selection.
-               */
+       case MouseTimeFX:
+               act = ActionManager::get_action (X_("MouseMode"), X_("set-mouse-mode-timefx"));
+               break;
 
-               for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
-                       (*i)->show_selection (selection->time);
-               }
+       case MouseAudition:
+               act = ActionManager::get_action (X_("MouseMode"), X_("set-mouse-mode-audition"));
+               break;
        }
 
+       assert (act);
+
+       tact = Glib::RefPtr<ToggleAction>::cast_dynamic (act);
+       assert (tact);
+
+       if (!tact->get_active()) {
+               /* this was just the notification that the old mode has been
+                * left. we'll get called again with the new mode active in a
+                * jiffy.
+                */
+               return;
+       }
+
+       switch (m) {
+       case MouseDraw:
+               act = ActionManager::get_action (X_("MouseMode"), X_("toggle-internal-edit"));
+               tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
+               tact->set_active (true);
+               break;
+       default:
+               break;
+       }
+       
+       if (_session && mouse_mode == MouseAudition) {
+               /* stop transport and reset default speed to avoid oddness with
+                  auditioning */
+               _session->request_transport_speed (0.0, true);
+       }
+
+       mouse_mode = m;
+
+       instant_save ();
+
+       //TODO:  set button styles for smart buttons
+/*
+       if ( smart_mode_action->get_active() ) {
+               if( mouse_mode == MouseObject ) { //smart active and object active
+                       smart_mode_button.set_active(1);
+                       smart_mode_button.set_name("smart mode button");
+                       mouse_move_button.set_name("smart mode button");
+               } else {  //smart active but object inactive
+                       smart_mode_button.set_active(0);
+                       smart_mode_button.set_name("smart mode button");
+                       mouse_move_button.set_name("mouse mode button");
+               }
+       } else {
+               smart_mode_button.set_active(0);
+               smart_mode_button.set_name("mouse mode button");
+               mouse_move_button.set_name("mouse mode button");
+       }
+*/
+       
        set_canvas_cursor ();
+       set_gain_envelope_visibility ();
+
+       MouseModeChanged (); /* EMIT SIGNAL */
 }
 
 void
@@ -368,10 +518,15 @@ Editor::step_mouse_mode (bool next)
                break;
 
        case MouseRange:
-               if (next) set_mouse_mode (MouseZoom);
+               if (next) set_mouse_mode (MouseDraw);
                else set_mouse_mode (MouseObject);
                break;
 
+       case MouseDraw:
+               if (next) set_mouse_mode (MouseZoom);
+               else set_mouse_mode (MouseRange);
+               break;
+
        case MouseZoom:
                if (next) {
                        if (Profile->get_sae()) {
@@ -383,7 +538,7 @@ Editor::step_mouse_mode (bool next)
                        if (Profile->get_sae()) {
                                set_mouse_mode (MouseObject);
                        } else {
-                               set_mouse_mode (MouseRange);
+                               set_mouse_mode (MouseDraw);
                        }
                }
                break;
@@ -412,6 +567,22 @@ Editor::step_mouse_mode (bool next)
        }
 }
 
+bool
+Editor::toggle_internal_editing_from_double_click (GdkEvent* event)
+{
+       if (_drags->active()) {
+               _drags->end_grab (event);
+       } 
+
+       ActionManager::do_action ("MouseMode", "toggle-internal-edit");
+
+       /* prevent reversion of edit cursor on button release */
+       
+       pre_press_cursor = 0;
+
+       return true;
+}
+
 void
 Editor::button_selection (ArdourCanvas::Item* /*item*/, GdkEvent* event, ItemType item_type)
 {
@@ -422,16 +593,19 @@ Editor::button_selection (ArdourCanvas::Item* /*item*/, GdkEvent* event, ItemTyp
           region alignment.
 
           note: not dbl-click or triple-click
+
+          Also note that there is no region selection in internal edit mode, otherwise
+          for operations operating on the selection (e.g. cut) it is not obvious whether
+          to cut notes or regions.
        */
 
        if (((mouse_mode != MouseObject) &&
-            (_join_object_range_state != JOIN_OBJECT_RANGE_OBJECT) &&
             (mouse_mode != MouseAudition || item_type != RegionItem) &&
             (mouse_mode != MouseTimeFX || item_type != RegionItem) &&
             (mouse_mode != MouseGain) &&
-            (mouse_mode != MouseRange)) ||
-
-           ((event->type != GDK_BUTTON_PRESS && event->type != GDK_BUTTON_RELEASE) || event->button.button > 3)) {
+            (mouse_mode != MouseDraw)) ||
+           ((event->type != GDK_BUTTON_PRESS && event->type != GDK_BUTTON_RELEASE) || event->button.button > 3) ||
+           (internal_editing() && mouse_mode != MouseTimeFX)) {
 
                return;
        }
@@ -451,59 +625,71 @@ Editor::button_selection (ArdourCanvas::Item* /*item*/, GdkEvent* event, ItemTyp
        Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
        bool press = (event->type == GDK_BUTTON_PRESS);
 
-       // begin_reversible_command (_("select on click"));
-
        switch (item_type) {
        case RegionItem:
-               if (mouse_mode != MouseRange || _join_object_range_state == JOIN_OBJECT_RANGE_OBJECT) {
-                       set_selected_regionview_from_click (press, op, true);
-               } else if (event->type == GDK_BUTTON_PRESS) {
-                       selection->clear_tracks ();
-                       set_selected_track_as_side_effect (true);
-               }
-               if (_join_object_range_state == JOIN_OBJECT_RANGE_OBJECT && !selection->regions.empty()) {
-                       select_range_around_region (selection->regions.front());
+               if (!get_smart_mode() || (_join_object_range_state != JOIN_OBJECT_RANGE_RANGE)) {
+                       if (press) {
+                               if (mouse_mode != MouseRange) {
+                                       set_selected_regionview_from_click (press, op);
+                               } else {
+                                       /* don't change the selection unless the
+                                          clicked track is not currently selected. if
+                                          so, "collapse" the selection to just this
+                                          track
+                                       */
+                                       if (!selection->selected (clicked_axisview)) {
+                                               set_selected_track_as_side_effect (Selection::Set);
+                                       }
+                               }
+                       } else {
+                               if (mouse_mode != MouseRange) {
+                                       set_selected_regionview_from_click (press, op);
+                               }
+                       }
                }
-                       
                break;
 
        case RegionViewNameHighlight:
        case RegionViewName:
-               if (mouse_mode != MouseRange || _join_object_range_state == JOIN_OBJECT_RANGE_OBJECT) {
-                       set_selected_regionview_from_click (press, op, true);
+       case LeftFrameHandle:
+       case RightFrameHandle:
+               if ( mouse_mode != MouseRange ) {
+                       set_selected_regionview_from_click (press, op);
                } else if (event->type == GDK_BUTTON_PRESS) {
-                       set_selected_track_as_side_effect ();
+                       set_selected_track_as_side_effect (op);
                }
                break;
 
-
        case FadeInHandleItem:
        case FadeInItem:
        case FadeOutHandleItem:
        case FadeOutItem:
-               if (mouse_mode != MouseRange || _join_object_range_state == JOIN_OBJECT_RANGE_OBJECT) {
-                       set_selected_regionview_from_click (press, op, true);
+       case StartCrossFadeItem:
+       case EndCrossFadeItem:
+               if ( mouse_mode != MouseRange ) {
+                       set_selected_regionview_from_click (press, op);
                } else if (event->type == GDK_BUTTON_PRESS) {
-                       set_selected_track_as_side_effect ();
+                       set_selected_track_as_side_effect (op);
                }
                break;
 
        case ControlPointItem:
-               set_selected_track_as_side_effect ();
-               if (mouse_mode != MouseRange || _join_object_range_state == JOIN_OBJECT_RANGE_OBJECT) {
-                       set_selected_control_point_from_click (op, false);
+               set_selected_track_as_side_effect (op);
+               if ( mouse_mode != MouseRange ) {
+                       set_selected_control_point_from_click (press, op);
                }
                break;
 
        case StreamItem:
                /* for context click, select track */
                if (event->button.button == 3) {
-                       set_selected_track_as_side_effect ();
+                       selection->clear_tracks ();
+                       set_selected_track_as_side_effect (op);
                }
                break;
 
        case AutomationTrackItem:
-               set_selected_track_as_side_effect (true);
+               set_selected_track_as_side_effect (op);
                break;
 
        default:
@@ -514,12 +700,6 @@ Editor::button_selection (ArdourCanvas::Item* /*item*/, GdkEvent* event, ItemTyp
 bool
 Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_type)
 {
-       if (_drag) {
-               _drag->item()->ungrab (event->button.time);
-               delete _drag;
-               _drag = 0;
-       }
-
        /* single mouse clicks on any of these item types operate
           independent of mouse mode, mostly because they are
           not on the main track canvas or because we want
@@ -528,83 +708,94 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
        switch (item_type) {
        case PlayheadCursorItem:
-               assert (_drag == 0);
-               _drag = new CursorDrag (this, item, true);
-               _drag->start_grab (event);
+               _drags->set (new CursorDrag (this, *playhead_cursor, true), event);
                return true;
 
        case MarkerItem:
                if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask(Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
                        hide_marker (item, event);
                } else {
-                       assert (_drag == 0);
-                       _drag = new MarkerDrag (this, item);
-                       _drag->start_grab (event);
+                       _drags->set (new MarkerDrag (this, item), event);
                }
                return true;
 
        case TempoMarkerItem:
-               assert (_drag == 0);
-               _drag = new TempoMarkerDrag (
-                       this,
-                       item,
-                       Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)
-                       );
-               _drag->start_grab (event);
-               return true;
+       {
+               TempoMarker* m = reinterpret_cast<TempoMarker*> (item->get_data ("marker"));
+               assert (m);
+               if (m->tempo().movable ()) {
+                       _drags->set (
+                               new TempoMarkerDrag (
+                                       this,
+                                       item,
+                                       Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)
+                                       ),
+                               event
+                               );
+                       return true;
+               } else {
+                       return false;
+               }
+       }
 
        case MeterMarkerItem:
-               assert (_drag == 0);
-               _drag = new MeterMarkerDrag (
-                       this,
-                       item,
-                       Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)
-                       );
-               _drag->start_grab (event);
+       {
+               MeterMarker* m = reinterpret_cast<MeterMarker*> (item->get_data ("marker"));
+               assert (m);
+               if (m->meter().movable ()) {
+                       _drags->set (
+                               new MeterMarkerDrag (
+                                       this,
+                                       item,
+                                       Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)
+                                       ),
+                               event
+                               );
+                       return true;
+               } else {
+                       return false;
+               }
+       }
+
+       case VideoBarItem:
+               _drags->set (new VideoTimeLineDrag (this, item), event);
                return true;
+               break;
 
        case MarkerBarItem:
        case TempoBarItem:
        case MeterBarItem:
                if (!Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
-                       assert (_drag == 0);
-                       _drag = new CursorDrag (this, &playhead_cursor->canvas_item, false);
-                       _drag->start_grab (event);
+                       _drags->set (new CursorDrag (this, *playhead_cursor, false), event);
                }
                return true;
                break;
 
 
        case RangeMarkerBarItem:
-               assert (_drag == 0);
                if (!Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
-                       _drag = new CursorDrag (this, &playhead_cursor->canvas_item, false);
+                       _drags->set (new CursorDrag (this, *playhead_cursor, false), event);
                } else {
-                       _drag = new RangeMarkerBarDrag (this, item, RangeMarkerBarDrag::CreateRangeMarker);
+                       _drags->set (new RangeMarkerBarDrag (this, item, RangeMarkerBarDrag::CreateRangeMarker), event);
                }
-               _drag->start_grab (event);
                return true;
                break;
 
        case CdMarkerBarItem:
-               assert (_drag == 0);
                if (!Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
-                       _drag = new CursorDrag (this, &playhead_cursor->canvas_item, false);
+                       _drags->set (new CursorDrag (this, *playhead_cursor, false), event);
                } else {
-                       _drag = new RangeMarkerBarDrag (this, item, RangeMarkerBarDrag::CreateCDMarker);
+                       _drags->set (new RangeMarkerBarDrag (this, item, RangeMarkerBarDrag::CreateCDMarker), event);
                }
-               _drag->start_grab (event);
                return true;
                break;
 
        case TransportMarkerBarItem:
-               assert (_drag == 0);
                if (!Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
-                       _drag = new CursorDrag (this, &playhead_cursor->canvas_item, false);
+                       _drags->set (new CursorDrag (this, *playhead_cursor, false), event);
                } else {
-                       _drag = new RangeMarkerBarDrag (this, item, RangeMarkerBarDrag::CreateTransportMarker);
+                       _drags->set (new RangeMarkerBarDrag (this, item, RangeMarkerBarDrag::CreateTransportMarker), event);
                }
-               _drag->start_grab (event);
                return true;
                break;
 
@@ -620,82 +811,138 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                   over a region.
                */
                if (item_type == StartSelectionTrimItem) {
-                       assert (_drag == 0);
-                       _drag = new SelectionDrag (this, item, SelectionDrag::SelectionStartTrim);
-                       _drag->start_grab (event);
+                       _drags->set (new SelectionDrag (this, item, SelectionDrag::SelectionStartTrim), event);
                } else if (item_type == EndSelectionTrimItem) {
-                       assert (_drag == 0);
-                       _drag = new SelectionDrag (this, item, SelectionDrag::SelectionEndTrim);
-                       _drag->start_grab (event);
+                       _drags->set (new SelectionDrag (this, item, SelectionDrag::SelectionEndTrim), event);
                }
        }
 
        Editing::MouseMode eff = effective_mouse_mode ();
 
+       /* special case: allow drag of region fade in/out in object mode with join object/range enabled */
+       if (item_type == FadeInHandleItem || item_type == FadeOutHandleItem) {
+               eff = MouseObject;
+       }
+
+       /* there is no Range mode when in internal edit mode */
+       if (eff == MouseRange && internal_editing()) {
+               eff = MouseObject;
+       }
+
        switch (eff) {
        case MouseRange:
                switch (item_type) {
                case StartSelectionTrimItem:
-                       assert (_drag == 0);
-                       _drag = new SelectionDrag (this, item, SelectionDrag::SelectionStartTrim);
-                       _drag->start_grab (event);
+                       _drags->set (new SelectionDrag (this, item, SelectionDrag::SelectionStartTrim), event);
                        break;
 
                case EndSelectionTrimItem:
-                       assert (_drag == 0);
-                       _drag = new SelectionDrag (this, item, SelectionDrag::SelectionEndTrim);
-                       _drag->start_grab (event);
+                       _drags->set (new SelectionDrag (this, item, SelectionDrag::SelectionEndTrim), event);
                        break;
 
                case SelectionItem:
-                       if (Keyboard::modifier_state_contains
-                           (event->button.state, Keyboard::ModifierMask(Keyboard::SecondaryModifier))) {
-                               // contains and not equals because I can't use alt as a modifier alone.
+                       if (Keyboard::modifier_state_contains (event->button.state, Keyboard::ModifierMask(Keyboard::PrimaryModifier|Keyboard::SecondaryModifier))) {
                                start_selection_grab (item, event);
-                       } else if (Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
+                               return true;
+                       } else if (Keyboard::modifier_state_equals (event->button.state, Keyboard::SecondaryModifier)) {
                                /* grab selection for moving */
-                               assert (_drag == 0);
-                               _drag = new SelectionDrag (this, item, SelectionDrag::SelectionMove);
-                               _drag->start_grab (event);
+                               _drags->set (new SelectionDrag (this, item, SelectionDrag::SelectionMove), event);
                        } else {
-                               double const y = event->button.y + vertical_adjustment.get_value() - canvas_timebars_vsize;
+                               double const y = event->button.y;
                                pair<TimeAxisView*, int> tvp = trackview_by_y_position (y);
                                if (tvp.first) {
                                        AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*> (tvp.first);
-                                       assert (_drag == 0);
-                                       if (join_object_range_button.get_active() && atv) {
+                                       if ( get_smart_mode() && atv) {
                                                /* smart "join" mode: drag automation */
-                                               _drag = new AutomationRangeDrag (this, atv->base_item(), selection->time);
+                                               _drags->set (new AutomationRangeDrag (this, atv, selection->time), event, _cursors->up_down);
                                        } else {
                                                /* this was debated, but decided the more common action was to
                                                   make a new selection */
-                                               _drag = new SelectionDrag (this, item, SelectionDrag::CreateSelection);
+                                               _drags->set (new SelectionDrag (this, item, SelectionDrag::CreateSelection), event);
                                        }
-                                       _drag->start_grab (event);
                                }
                        }
                        break;
 
+               case StreamItem:
+                       if (internal_editing()) {
+                               if (dynamic_cast<MidiTimeAxisView*> (clicked_axisview)) {
+                                       _drags->set (new RegionCreateDrag (this, item, clicked_axisview), event);
+                                       return true;
+                               } 
+                       } else {
+                               if (Keyboard::modifier_state_equals (event->button.state, Keyboard::RangeSelectModifier)) {
+                                       _drags->set (new SelectionDrag (this, item, SelectionDrag::SelectionExtend), event);
+                               } else {
+                                       _drags->set (new SelectionDrag (this, item, SelectionDrag::CreateSelection), event);
+                               }
+                               return true;
+                       }
+                       break;
+
+               case RegionViewNameHighlight:
+                       if (!clicked_regionview->region()->locked()) {
+                               _drags->set (new TrimDrag (this, item, clicked_regionview, selection->regions.by_layer()), event);
+                               return true;
+                       }
+                       break;
+
                default:
-                       assert (_drag == 0);
-                       _drag = new SelectionDrag (this, item, SelectionDrag::CreateSelection);
-                       _drag->start_grab (event);
+                       if (!internal_editing()) {
+                               if (Keyboard::modifier_state_equals (event->button.state, Keyboard::RangeSelectModifier)) {
+                                       _drags->set (new SelectionDrag (this, item, SelectionDrag::SelectionExtend), event);
+                               } else {
+                                       _drags->set (new SelectionDrag (this, item, SelectionDrag::CreateSelection), event);
+                               }
+                       }
                }
                return true;
                break;
 
+       case MouseDraw:
+               switch (item_type) {
+               case NoteItem:
+                       if (internal_editing()) {
+                               /* trim notes if we're in internal edit mode and near the ends of the note */
+                               NoteBase* cn = reinterpret_cast<NoteBase*>(item->get_data ("notebase"));
+                               assert (cn);
+                               if (cn && cn->big_enough_to_trim() && cn->mouse_near_ends()) {
+                                       _drags->set (new NoteResizeDrag (this, item), event, current_canvas_cursor);
+                               } else {
+                                       _drags->set (new NoteDrag (this, item), event);
+                               }
+                               return true;
+                       }
+                       break;
+               case StreamItem:
+                       if (internal_editing()) {
+                               if (dynamic_cast<MidiTimeAxisView*> (clicked_axisview)) {
+                                       _drags->set (new RegionCreateDrag (this, item, clicked_axisview), event);
+                               }
+                               return true;
+                       }
+                       break;
+
+               default:
+                       break;
+               }
+               break;
+
        case MouseObject:
                switch (item_type) {
                case NoteItem:
                        if (internal_editing()) {
-                               /* Note: we don't get here if not in internal_editing() mode */
-                               assert (_drag == 0);
-                               _drag = new NoteDrag (this, item);
-                               _drag->start_grab (event);
+                               NoteBase* cn = reinterpret_cast<NoteBase*> (item->get_data ("notebase"));
+                               assert (cn);
+                               if (cn->mouse_near_ends()) {
+                                       _drags->set (new NoteResizeDrag (this, item), event, current_canvas_cursor);
+                               } else {
+                                       _drags->set (new NoteDrag (this, item), event);
+                               }
                                return true;
                        }
                        break;
-                       
+
                default:
                        break;
                }
@@ -703,140 +950,186 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                if (Keyboard::modifier_state_contains (event->button.state, Keyboard::ModifierMask(Keyboard::PrimaryModifier|Keyboard::SecondaryModifier)) &&
                    event->type == GDK_BUTTON_PRESS) {
 
-                       assert (_drag == 0);
-                       _drag = new RubberbandSelectDrag (this, item);
-                       _drag->start_grab (event);
+                       _drags->set (new EditorRubberbandSelectDrag (this, item), event);
 
                } else if (event->type == GDK_BUTTON_PRESS) {
 
                        switch (item_type) {
                        case FadeInHandleItem:
                        {
-                               assert (_drag == 0);
-                               RegionSelection s = get_equivalent_regions (selection->regions, RouteGroup::Edit);
-                               _drag = new FadeInDrag (this, item, reinterpret_cast<RegionView*> (item->get_data("regionview")), s);
-                               _drag->start_grab (event);
+                               _drags->set (new FadeInDrag (this, item, reinterpret_cast<RegionView*> (item->get_data("regionview")), selection->regions), event, _cursors->fade_in);
                                return true;
                        }
 
                        case FadeOutHandleItem:
                        {
-                               assert (_drag == 0);
-                               RegionSelection s = get_equivalent_regions (selection->regions, RouteGroup::Edit);
-                               _drag = new FadeOutDrag (this, item, reinterpret_cast<RegionView*> (item->get_data("regionview")), s);
-                               _drag->start_grab (event);
+                               _drags->set (new FadeOutDrag (this, item, reinterpret_cast<RegionView*> (item->get_data("regionview")), selection->regions), event, _cursors->fade_out);
+                               return true;
+                       }
+
+                       case StartCrossFadeItem:
+                       case EndCrossFadeItem:
+                               /* we might allow user to grab inside the fade to trim a region with preserve_fade_anchor.  for not this is not fully implemented */ 
+//                             if (!clicked_regionview->region()->locked()) {
+//                                     _drags->set (new TrimDrag (this, item, clicked_regionview, selection->regions.by_layer(), true), event);
+//                                     return true;
+//                             }
+                               break;
+
+                       case FeatureLineItem:
+                       {
+                               if (Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier)) {
+                                       remove_transient(item);
+                                       return true;
+                               }
+
+                               _drags->set (new FeatureLineDrag (this, item), event);
                                return true;
+                               break;
                        }
 
                        case RegionItem:
+                               if (dynamic_cast<AutomationRegionView*> (clicked_regionview)) {
+                                       /* click on an automation region view; do nothing here and let the ARV's signal handler
+                                          sort it out.
+                                       */
+                                       break;
+                               }
+
+                               if (internal_editing ()) {
+                                       break;
+                               }
+
+                               /* click on a normal region view */
                                if (Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)) {
-                                       start_region_copy_grab (item, event, clicked_regionview);
+                                       add_region_copy_drag (item, event, clicked_regionview);
                                } else if (Keyboard::the_keyboard().key_is_down (GDK_b)) {
-                                       start_region_brush_grab (item, event, clicked_regionview);
+                                       add_region_brush_drag (item, event, clicked_regionview);
                                } else {
-                                       start_region_grab (item, event, clicked_regionview);
+                                       add_region_drag (item, event, clicked_regionview);
                                }
+
+
+//                             if (!internal_editing() && (_join_object_range_state == JOIN_OBJECT_RANGE_RANGE && !selection->regions.empty())) {
+//                                     _drags->add (new SelectionDrag (this, clicked_axisview->get_selection_rect (clicked_selection)->rect, SelectionDrag::SelectionMove));
+//                             }
+
+                               _drags->start_grab (event);
+                               return true;
                                break;
 
                        case RegionViewNameHighlight:
-                       {
-                               assert (_drag == 0);
-                               RegionSelection s = get_equivalent_regions (selection->regions, RouteGroup::Edit);
-                               _drag = new TrimDrag (this, item, clicked_regionview, s.by_layer());
-                               _drag->start_grab (event);
-                               return true;
+                       case LeftFrameHandle:
+                        case RightFrameHandle:
+                               if (!clicked_regionview->region()->locked()) {
+                                       _drags->set (new TrimDrag (this, item, clicked_regionview, selection->regions.by_layer()), event);
+                                       return true;
+                               }
                                break;
-                       }
 
                        case RegionViewName:
                        {
                                /* rename happens on edit clicks */
-                               assert (_drag == 0);
-                               RegionSelection s = get_equivalent_regions (selection->regions, RouteGroup::Edit);
-                               _drag = new TrimDrag (this, clicked_regionview->get_name_highlight(), clicked_regionview, s.by_layer());
-                               _drag->start_grab (event);
+                               _drags->set (new TrimDrag (this, clicked_regionview->get_name_highlight(), clicked_regionview, selection->regions.by_layer()), event);
                                return true;
                                break;
                        }
 
                        case ControlPointItem:
-                               assert (_drag == 0);
-                               _drag = new ControlPointDrag (this, item);
-                               _drag->start_grab (event);
+                               _drags->set (new ControlPointDrag (this, item), event);
                                return true;
                                break;
 
                        case AutomationLineItem:
-                               assert (_drag == 0);
-                               _drag = new LineDrag (this, item);
-                               _drag->start_grab (event);
+                               _drags->set (new LineDrag (this, item), event);
                                return true;
                                break;
 
                        case StreamItem:
                                if (internal_editing()) {
-                                       assert (_drag == 0);
-                                       _drag = new RegionCreateDrag (this, item, clicked_axisview);
-                                       _drag->start_grab (event);
+                                       if (dynamic_cast<MidiTimeAxisView*> (clicked_axisview)) {
+                                               _drags->set (new RegionCreateDrag (this, item, clicked_axisview), event);
+                                       }
                                        return true;
                                } else {
-                                       assert (_drag == 0);
-                                       _drag = new RubberbandSelectDrag (this, item);
-                                       _drag->start_grab (event);
+                                       _drags->set (new EditorRubberbandSelectDrag (this, item), event);
                                }
                                break;
-                               
+
                        case AutomationTrackItem:
-                               assert (_drag == 0);
-                               /* rubberband drag to select automation points */
-                               _drag = new RubberbandSelectDrag (this, item);
-                               _drag->start_grab (event);
+                       {
+                               TimeAxisView* parent = clicked_axisview->get_parent ();
+                               AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*> (clicked_axisview);
+                               assert (atv);
+                               if (parent && dynamic_cast<MidiTimeAxisView*> (parent) && atv->show_regions ()) {
+
+                                       RouteTimeAxisView* p = dynamic_cast<RouteTimeAxisView*> (parent);
+                                       assert (p);
+                                       boost::shared_ptr<Playlist> pl = p->track()->playlist ();
+                                       if (pl->n_regions() == 0) {
+                                               /* Parent has no regions; create one so that we have somewhere to put automation */
+                                               _drags->set (new RegionCreateDrag (this, item, parent), event);
+                                       } else {
+                                               /* See if there's a region before the click that we can extend, and extend it if so */
+                                               framepos_t const t = canvas_event_frame (event);
+                                               boost::shared_ptr<Region> prev = pl->find_next_region (t, End, -1);
+                                               if (!prev) {
+                                                       _drags->set (new RegionCreateDrag (this, item, parent), event);
+                                               } else {
+                                                       prev->set_length (t - prev->position ());
+                                               }
+                                       }
+                               } else {
+                                       /* rubberband drag to select automation points */
+                                       _drags->set (new EditorRubberbandSelectDrag (this, item), event);
+                               }
                                break;
+                       }
 
                        case SelectionItem:
                        {
-                               if (join_object_range_button.get_active()) {
-                                       /* we're in "smart" joined mode, and we've clicked on a Selection; if we're
-                                        * over an automation track, start a drag of its data */
-                                       double const y = event->button.y + vertical_adjustment.get_value() - canvas_timebars_vsize;
+                               if ( get_smart_mode() ) {
+                                       /* we're in "smart" joined mode, and we've clicked on a Selection */
+                                       double const y = event->button.y;
                                        pair<TimeAxisView*, int> tvp = trackview_by_y_position (y);
                                        if (tvp.first) {
+                                               /* if we're over an automation track, start a drag of its data */
                                                AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*> (tvp.first);
                                                if (atv) {
-                                                       assert (_drag == 0);
-                                                       _drag = new AutomationRangeDrag (this, atv->base_item(), selection->time);
-                                                       _drag->start_grab (event);
+                                                       _drags->set (new AutomationRangeDrag (this, atv, selection->time), event, _cursors->up_down);
                                                }
+
+                                               /* if we're over a track and a region, and in the `object' part of a region,
+                                                  put a selection around the region and drag both
+                                               */
+/*                                             RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
+                                               if (rtv && _join_object_range_state == JOIN_OBJECT_RANGE_OBJECT) {
+                                                       boost::shared_ptr<Track> t = boost::dynamic_pointer_cast<Track> (rtv->route ());
+                                                       if (t) {
+                                                               boost::shared_ptr<Playlist> pl = t->playlist ();
+                                                               if (pl) {
+
+                                                                       boost::shared_ptr<Region> r = pl->top_region_at (canvas_event_frame (event));
+                                                                       if (r) {
+                                                                               RegionView* rv = rtv->view()->find_view (r);
+                                                                               clicked_selection = select_range (rv->region()->position(), 
+                                                                                                                 rv->region()->last_frame()+1);
+                                                                               _drags->add (new SelectionDrag (this, item, SelectionDrag::SelectionMove));
+                                                                               list<RegionView*> rvs;
+                                                                               rvs.push_back (rv);
+                                                                               _drags->add (new RegionMoveDrag (this, item, rv, rvs, false, false));
+                                                                               _drags->start_grab (event);
+                                                                               return true;
+                                                                       }
+                                                               }
+                                                       }
+                                               }
+*/
                                        }
                                }
                                break;
                        }
 
-#ifdef WITH_CMT
-                       case ImageFrameHandleStartItem:
-                               imageframe_start_handle_op(item, event) ;
-                               return(true) ;
-                               break ;
-                       case ImageFrameHandleEndItem:
-                               imageframe_end_handle_op(item, event) ;
-                               return(true) ;
-                               break ;
-                       case MarkerViewHandleStartItem:
-                               markerview_item_start_handle_op(item, event) ;
-                               return(true) ;
-                               break ;
-                       case MarkerViewHandleEndItem:
-                               markerview_item_end_handle_op(item, event) ;
-                               return(true) ;
-                               break ;
-                       case MarkerViewItem:
-                               start_markerview_grab(item, event) ;
-                               break ;
-                       case ImageFrameItem:
-                               start_imageframe_grab(item, event) ;
-                               break ;
-#endif
-
                        case MarkerBarItem:
 
                                break;
@@ -850,53 +1143,30 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
        case MouseGain:
                switch (item_type) {
-               case RegionItem:
-                       /* start a grab so that if we finish after moving
-                          we can tell what happened.
-                       */
-                       assert (_drag == 0);
-                       _drag = new RegionGainDrag (this, item);
-                       _drag->start_grab (event, current_canvas_cursor);
-                       break;
-
                case GainLineItem:
-                       assert (_drag == 0);
-                       _drag = new LineDrag (this, item);
-                       _drag->start_grab (event);
+                       _drags->set (new LineDrag (this, item), event);
                        return true;
 
                case ControlPointItem:
-                       assert (_drag == 0);
-                       _drag = new ControlPointDrag (this, item);
-                       _drag->start_grab (event);
+                       _drags->set (new ControlPointDrag (this, item), event);
                        return true;
                        break;
 
-               default:
+               case SelectionItem:
+               {
+                       AudioRegionView* arv = dynamic_cast<AudioRegionView *> (clicked_regionview);
+                       if (arv) {
+                               _drags->set (new AutomationRangeDrag (this, arv, selection->time), event, _cursors->up_down);
+                               _drags->start_grab (event);
+                       }
+                       return true;
                        break;
                }
-               return true;
-               break;
-
-               switch (item_type) {
-               case ControlPointItem:
-                       assert (_drag == 0);
-                       _drag = new ControlPointDrag (this, item);
-                       _drag->start_grab (event);
-                       break;
 
                case AutomationLineItem:
-                       assert (_drag == 0);
-                       _drag = new LineDrag (this, item);
-                       _drag->start_grab (event);
+                       _drags->set (new LineDrag (this, item), event);
                        break;
-
-               case RegionItem:
-                       // XXX need automation mode to identify which
-                       // line to use
-                       // start_line_grab_from_regionview (item, event);
-                       break;
-
+                       
                default:
                        break;
                }
@@ -905,9 +1175,7 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
        case MouseZoom:
                if (event->type == GDK_BUTTON_PRESS) {
-                       assert (_drag == 0);
-                       _drag = new MouseZoomDrag (this, item);
-                       _drag->start_grab (event);
+                       _drags->set (new MouseZoomDrag (this, item), event);
                }
 
                return true;
@@ -915,26 +1183,23 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
        case MouseTimeFX:
                if (internal_editing() && item_type == NoteItem) {
-                       assert (_drag == 0);
-                       _drag = new NoteResizeDrag (this, item);
-                       _drag->start_grab (event);
+                       /* drag notes if we're in internal edit mode */
+                       _drags->set (new NoteResizeDrag (this, item), event, current_canvas_cursor);
                        return true;
-               } else if (!internal_editing() && item_type == RegionItem) {
-                       assert (_drag == 0);
-                       _drag = new TimeFXDrag (this, item, clicked_regionview, selection->regions.by_layer());
-                       _drag->start_grab (event);
+               } else if (clicked_regionview) {
+                       /* do time-FX  */
+                       _drags->set (new TimeFXDrag (this, item, clicked_regionview, selection->regions.by_layer()), event);
                        return true;
                }
                break;
 
        case MouseAudition:
-               _drag = new ScrubDrag (this, item);
-               _drag->start_grab (event);
+               _drags->set (new ScrubDrag (this, item), event);
                scrub_reversals = 0;
                scrub_reverse_distance = 0;
                last_scrub_x = event->button.x;
                scrubbing_direction = 0;
-               track_canvas->get_window()->set_cursor (*transparent_cursor);
+               set_canvas_cursor (_cursors->transparent);
                return true;
                break;
 
@@ -953,17 +1218,21 @@ Editor::button_press_handler_2 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
        case MouseObject:
                switch (item_type) {
                case RegionItem:
+                       if (internal_editing ()) {
+                               /* no region drags in internal edit mode */
+                               return false;
+                       }
+
                        if (Keyboard::modifier_state_contains (event->button.state, Keyboard::CopyModifier)) {
-                               start_region_copy_grab (item, event, clicked_regionview);
+                               add_region_copy_drag (item, event, clicked_regionview);
                        } else {
-                               start_region_grab (item, event, clicked_regionview);
+                               add_region_drag (item, event, clicked_regionview);
                        }
+                       _drags->start_grab (event);
                        return true;
                        break;
                case ControlPointItem:
-                       assert (_drag == 0);
-                       _drag = new ControlPointDrag (this, item);
-                       _drag->start_grab (event);
+                       _drags->set (new ControlPointDrag (this, item), event);
                        return true;
                        break;
 
@@ -973,16 +1242,20 @@ Editor::button_press_handler_2 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
                switch (item_type) {
                case RegionViewNameHighlight:
-                       assert (_drag == 0);
-                       _drag = new TrimDrag (this, item, clicked_regionview, selection->regions.by_layer());
-                       _drag->start_grab (event);
+                        _drags->set (new TrimDrag (this, item, clicked_regionview, selection->regions.by_layer()), event);
+                        return true;
+                        break;
+
+                case LeftFrameHandle:
+                case RightFrameHandle:
+                       if (!internal_editing ()) {
+                               _drags->set (new TrimDrag (this, item, clicked_regionview, selection->regions.by_layer()), event);
+                       }
                        return true;
                        break;
 
                case RegionViewName:
-                       assert (_drag == 0);
-                       _drag = new TrimDrag (this, clicked_regionview->get_name_highlight(), clicked_regionview, selection->regions.by_layer());
-                       _drag->start_grab (event);
+                       _drags->set (new TrimDrag (this, clicked_regionview->get_name_highlight(), clicked_regionview, selection->regions.by_layer()), event);
                        return true;
                        break;
 
@@ -992,6 +1265,9 @@ Editor::button_press_handler_2 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
                break;
 
+       case MouseDraw:
+               return false;
+
        case MouseRange:
                /* relax till release */
                return true;
@@ -1000,9 +1276,9 @@ Editor::button_press_handler_2 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
        case MouseZoom:
                if (Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
-                       temporal_zoom_session();
+                       temporal_zoom_to_frame (false, canvas_event_frame (event));
                } else {
-                       temporal_zoom_to_frame (true, event_frame(event));
+                       temporal_zoom_to_frame (true, canvas_event_frame(event));
                }
                return true;
                break;
@@ -1013,15 +1289,20 @@ Editor::button_press_handler_2 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
        return false;
 }
-
+   
 bool
 Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_type)
 {
+       if (event->type == GDK_2BUTTON_PRESS) {
+               _drags->mark_double_click ();
+               return false;
+       }
+
        if (event->type != GDK_BUTTON_PRESS) {
                return false;
        }
 
-       Glib::RefPtr<Gdk::Window> canvas_window = const_cast<Editor*>(this)->track_canvas->get_window();
+       Glib::RefPtr<Gdk::Window> canvas_window = const_cast<Editor*>(this)->_track_canvas_viewport->get_window();
 
        if (canvas_window) {
                Glib::RefPtr<const Gdk::Window> pointer_window;
@@ -1031,23 +1312,60 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
 
                pointer_window = canvas_window->get_pointer (x, y, mask);
 
-               if (pointer_window == track_canvas->get_bin_window()) {
-                       track_canvas->window_to_world (x, y, wx, wy);
-                       allow_vertical_scroll = true;
-               } else {
-                       allow_vertical_scroll = false;
+               if (pointer_window == _track_canvas->get_window()) {
+                       _track_canvas->window_to_canvas (x, y, wx, wy);
                }
        }
 
-       track_canvas->grab_focus();
+        pre_press_cursor = current_canvas_cursor;
+       
+       _track_canvas->grab_focus();
 
        if (_session && _session->actively_recording()) {
                return true;
        }
 
+       if (internal_editing()) {
+               bool leave_internal_edit_mode = false;
+
+               switch (item_type) {
+               case NoteItem:
+                       break;
+
+               case RegionItem:
+                       if (!dynamic_cast<MidiRegionView*> (clicked_regionview) && !dynamic_cast<AutomationRegionView*> (clicked_regionview)) {
+                               leave_internal_edit_mode = true;
+                       }
+                       break;
+
+               case PlayheadCursorItem:
+               case MarkerItem:
+               case TempoMarkerItem:
+               case MeterMarkerItem:
+               case MarkerBarItem:
+               case TempoBarItem:
+               case MeterBarItem:
+               case RangeMarkerBarItem:
+               case CdMarkerBarItem:
+               case TransportMarkerBarItem:
+               case StreamItem:
+                       /* button press on these events never does anything to
+                          change the editing mode.
+                       */
+                       break;
+
+               default:
+                       break;
+               }
+               
+               if (leave_internal_edit_mode) {
+                       ActionManager::do_action ("MouseMode", "toggle-internal-edit");
+               }
+       }
+
        button_selection (item, event, item_type);
 
-       if (_drag == 0 &&
+       if (!_drags->active () &&
            (Keyboard::is_delete_event (&event->button) ||
             Keyboard::is_context_menu_event (&event->button) ||
             Keyboard::is_edit_event (&event->button))) {
@@ -1056,6 +1374,13 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
                return true;
        }
 
+       //not rolling, range mode click + join_play_range :  locate the PH here
+       if ( !_drags->active () && !_session->transport_rolling() && ( effective_mouse_mode() == MouseRange ) && Config->get_always_play_range() ) {
+               framepos_t where = canvas_event_frame (event);
+               snap_to(where);
+               _session->request_locate (where, false);
+       }
+
        switch (event->button.button) {
        case 1:
                return button_press_handler_1 (item, event, item_type);
@@ -1069,6 +1394,7 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
                break;
 
        default:
+                return button_press_dispatch (&event->button);
                break;
 
        }
@@ -1076,25 +1402,48 @@ Editor::button_press_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemTyp
        return false;
 }
 
+bool
+Editor::button_press_dispatch (GdkEventButton* ev)
+{
+        /* this function is intended only for buttons 4 and above.
+         */
+
+        Gtkmm2ext::MouseButton b (ev->state, ev->button);
+        return button_bindings->activate (b, Gtkmm2ext::Bindings::Press);
+}
+
+bool
+Editor::button_release_dispatch (GdkEventButton* ev)
+{
+        /* this function is intended only for buttons 4 and above.
+         */
+
+        Gtkmm2ext::MouseButton b (ev->state, ev->button);
+        return button_bindings->activate (b, Gtkmm2ext::Bindings::Release);
+}
+
 bool
 Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_type)
 {
-       nframes64_t where = event_frame (event, 0, 0);
+       framepos_t where = canvas_event_frame (event);
        AutomationTimeAxisView* atv = 0;
 
+        if (pre_press_cursor) {
+                set_canvas_cursor (pre_press_cursor);
+                pre_press_cursor = 0;
+        }
+
        /* no action if we're recording */
 
        if (_session && _session->actively_recording()) {
                return true;
        }
 
-       /* first, see if we're finishing a drag ... */
+       /* see if we're finishing a drag */
 
        bool were_dragging = false;
-       if (_drag) {
-               bool const r = _drag->end_grab (event);
-               delete _drag;
-               _drag = 0;
+       if (_drags->active ()) {
+               bool const r = _drags->end_grab (event);
                if (r) {
                        /* grab dragged, so do nothing else */
                        return true;
@@ -1103,14 +1452,14 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                were_dragging = true;
        }
 
-       button_selection (item, event, item_type);
+       update_region_layering_order_editor ();
 
        /* edit events get handled here */
 
-       if (_drag == 0 && Keyboard::is_edit_event (&event->button)) {
+       if (!_drags->active () && Keyboard::is_edit_event (&event->button)) {
                switch (item_type) {
                case RegionItem:
-                       edit_region ();
+                       show_region_properties ();
                        break;
 
                case TempoMarkerItem:
@@ -1138,10 +1487,11 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
        }
 
        /* context menu events get handled here */
-
        if (Keyboard::is_context_menu_event (&event->button)) {
 
-               if (_drag == 0) {
+               context_click_event = *event;
+
+               if (!_drags->active ()) {
 
                        /* no matter which button pops up the context menu, tell the menu
                           widget to use button 1 to drive menu selection.
@@ -1155,22 +1505,32 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                                popup_fade_context_menu (1, event->button.time, item, item_type);
                                break;
 
+                       case StartCrossFadeItem:
+                               popup_xfade_in_context_menu (1, event->button.time, item, item_type);
+                               break;
+
+                       case EndCrossFadeItem:
+                               popup_xfade_out_context_menu (1, event->button.time, item, item_type);
+                               break;
+
                        case StreamItem:
-                               popup_track_context_menu (1, event->button.time, item_type, false, where);
+                               popup_track_context_menu (1, event->button.time, item_type, false);
                                break;
 
                        case RegionItem:
                        case RegionViewNameHighlight:
+                       case LeftFrameHandle:
+                       case RightFrameHandle:
                        case RegionViewName:
-                               popup_track_context_menu (1, event->button.time, item_type, false, where);
+                               popup_track_context_menu (1, event->button.time, item_type, false);
                                break;
 
                        case SelectionItem:
-                               popup_track_context_menu (1, event->button.time, item_type, true, where);
+                               popup_track_context_menu (1, event->button.time, item_type, true);
                                break;
-
+                               
                        case AutomationTrackItem:
-                               popup_track_context_menu (1, event->button.time, item_type, false, where);
+                               popup_track_context_menu (1, event->button.time, item_type, false);
                                break;
 
                        case MarkerBarItem:
@@ -1179,6 +1539,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        case CdMarkerBarItem:
                        case TempoBarItem:
                        case MeterBarItem:
+                       case VideoBarItem:
                                popup_ruler_menu (where, item_type);
                                break;
 
@@ -1187,31 +1548,20 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                                break;
 
                        case TempoMarkerItem:
-                               tm_marker_context_menu (&event->button, item);
+                               tempo_or_meter_marker_context_menu (&event->button, item);
                                break;
 
                        case MeterMarkerItem:
-                               tm_marker_context_menu (&event->button, item);
+                               tempo_or_meter_marker_context_menu (&event->button, item);
                                break;
 
                        case CrossfadeViewItem:
-                               popup_track_context_menu (1, event->button.time, item_type, false, where);
+                               popup_track_context_menu (1, event->button.time, item_type, false);
                                break;
 
-#ifdef WITH_CMT
-                       case ImageFrameItem:
-                               popup_imageframe_edit_menu(1, event->button.time, item, true) ;
-                               break ;
-                       case ImageFrameTimeAxisItem:
-                               popup_imageframe_edit_menu(1, event->button.time, item, false) ;
-                               break ;
-                       case MarkerViewItem:
-                               popup_marker_time_axis_edit_menu(1, event->button.time, item, true) ;
-                               break ;
-                       case MarkerTimeAxisItem:
-                               popup_marker_time_axis_edit_menu(1, event->button.time, item, false) ;
-                               break ;
-#endif
+                       case ControlPointItem:
+                               popup_control_point_context_menu (item, event);
+                               break;
 
                        default:
                                break;
@@ -1225,7 +1575,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
        Editing::MouseMode const eff = effective_mouse_mode ();
 
-       if (_drag == 0 && Keyboard::is_delete_event (&event->button)) {
+       if (!_drags->active () && Keyboard::is_delete_event (&event->button)) {
 
                switch (item_type) {
                case TempoMarkerItem:
@@ -1247,11 +1597,11 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        break;
 
                case ControlPointItem:
-                       if (eff == MouseGain) {
-                               remove_gain_control_point (item, event);
-                       } else {
-                               remove_control_point (item, event);
-                       }
+                       remove_control_point (item);
+                       break;
+
+               case NoteItem:
+                       remove_midi_note (item, event);
                        break;
 
                default:
@@ -1297,7 +1647,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
                case MeterBarItem:
                        if (!_dragging_playhead) {
-                               mouse_add_new_meter_event (pixel_to_frame (event->button.x));
+                               mouse_add_new_meter_event (pixel_to_sample (event->button.x));
                        }
                        return true;
                        break;
@@ -1312,38 +1662,34 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        case AutomationTrackItem:
                                atv = dynamic_cast<AutomationTimeAxisView*>(clicked_axisview);
                                if (atv) {
-                                       atv->add_automation_event (item, event, where, event->button.y);
+                                       atv->add_automation_event (event, where, event->button.y);
                                }
                                return true;
                                break;
-
                        default:
                                break;
                        }
                        break;
 
                case MouseGain:
-                       // Gain only makes sense for audio regions
-
-                       if (!dynamic_cast<AudioRegionView*>(clicked_regionview)) {
-                               break;
-                       }
-
                        switch (item_type) {
                        case RegionItem:
+                       {
                                /* check that we didn't drag before releasing, since
                                   its really annoying to create new control
                                   points when doing this.
                                */
-                               if (were_dragging) {
-                                       dynamic_cast<AudioRegionView*>(clicked_regionview)->add_gain_point_event (item, event);
+                               AudioRegionView* arv = dynamic_cast<AudioRegionView*> (clicked_regionview);
+                               if (!were_dragging && arv) {
+                                       arv->add_gain_point_event (item, event);
                                }
                                return true;
                                break;
+                       }
 
                        case AutomationTrackItem:
                                dynamic_cast<AutomationTimeAxisView*>(clicked_axisview)->
-                                       add_automation_event (item, event, where, event->button.y);
+                                       add_automation_event (event, where, event->button.y);
                                return true;
                                break;
                        default:
@@ -1352,7 +1698,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        break;
 
                case MouseAudition:
-                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                        if (scrubbing_direction == 0) {
                                /* no drag, just a click */
                                switch (item_type) {
@@ -1373,6 +1719,8 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
                }
 
+                /* do any (de)selection operations that should occur on button release */
+                button_selection (item, event, item_type);
                return true;
                break;
 
@@ -1399,8 +1747,10 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
                        }
                        break;
 
+               case MouseDraw:
+                       return true;
+                       
                case MouseRange:
-
                        // x_style_paste (where, 1.0);
                        return true;
                        break;
@@ -1417,6 +1767,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
        default:
                break;
        }
+
        return false;
 }
 
@@ -1426,11 +1777,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        ControlPoint* cp;
        Marker * marker;
        double fraction;
-
-       if (last_item_entered != item) {
-               last_item_entered = item;
-               last_item_entered_n = 0;
-       }
+        bool ret = true;
 
        switch (item_type) {
        case ControlPointItem:
@@ -1447,60 +1794,61 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
 
                        fraction = 1.0 - (cp->get_y() / cp->line().height());
 
-                       if (is_drawable() && dynamic_cast<ScrubDrag*> (_drag) == 0) {
-                               track_canvas->get_window()->set_cursor (*fader_cursor);
+                       if (is_drawable() && !_drags->active ()) {
+                               set_canvas_cursor (_cursors->fader);
                        }
 
-                       last_item_entered_n++;
-                       set_verbose_canvas_cursor (cp->line().get_verbose_cursor_string (fraction), at_x, at_y);
-                       if (last_item_entered_n < 10) {
-                               show_verbose_canvas_cursor ();
-                       }
+                       _verbose_cursor->set (cp->line().get_verbose_cursor_string (fraction), at_x, at_y);
+                       _verbose_cursor->show ();
                }
                break;
 
        case GainLineItem:
                if (mouse_mode == MouseGain) {
                        ArdourCanvas::Line *line = dynamic_cast<ArdourCanvas::Line *> (item);
-                       if (line)
-                               line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_EnteredGainLine.get();
+                       if (line) {
+                               line->set_outline_color (ARDOUR_UI::config()->get_canvasvar_EnteredGainLine());
+                       }
                        if (is_drawable()) {
-                               track_canvas->get_window()->set_cursor (*fader_cursor);
+                               set_canvas_cursor (_cursors->fader);
                        }
                }
                break;
 
        case AutomationLineItem:
                if (mouse_mode == MouseGain || mouse_mode == MouseObject) {
-                       {
-                               ArdourCanvas::Line *line = dynamic_cast<ArdourCanvas::Line *> (item);
-                               if (line)
-                                       line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_EnteredAutomationLine.get();
+                       ArdourCanvas::Line *line = dynamic_cast<ArdourCanvas::Line *> (item);
+                       if (line) {
+                               line->set_outline_color (ARDOUR_UI::config()->get_canvasvar_EnteredAutomationLine());
                        }
                        if (is_drawable()) {
-                               track_canvas->get_window()->set_cursor (*fader_cursor);
+                               set_canvas_cursor (_cursors->fader);
                        }
                }
                break;
 
        case RegionViewNameHighlight:
-               if (is_drawable() && mouse_mode == MouseObject) {
-                       track_canvas->get_window()->set_cursor (*trimmer_cursor);
+               if (is_drawable() && effective_mouse_mode() == MouseObject && entered_regionview) {
+                       set_canvas_cursor_for_region_view (event->crossing.x, entered_regionview);
+                       _over_region_trim_target = true;
                }
                break;
 
+       case LeftFrameHandle:
+       case RightFrameHandle:
+               if (is_drawable() && effective_mouse_mode() == MouseObject && !internal_editing() && entered_regionview) {
+                       set_canvas_cursor_for_region_view (event->crossing.x, entered_regionview);
+               }
+                break;
+
        case StartSelectionTrimItem:
+               if (is_drawable()) {
+                       set_canvas_cursor (_cursors->left_side_trim);
+               }
+               break;
        case EndSelectionTrimItem:
-
-#ifdef WITH_CMT
-       case ImageFrameHandleStartItem:
-       case ImageFrameHandleEndItem:
-       case MarkerViewHandleStartItem:
-       case MarkerViewHandleEndItem:
-#endif
-
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*trimmer_cursor);
+                       set_canvas_cursor (_cursors->right_side_trim);
                }
                break;
 
@@ -1508,10 +1856,10 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                if (is_drawable()) {
                        switch (_edit_point) {
                        case EditAtMouse:
-                               track_canvas->get_window()->set_cursor (*grabber_edit_point_cursor);
+                               set_canvas_cursor (_cursors->grabber_edit_point);
                                break;
                        default:
-                               track_canvas->get_window()->set_cursor (*grabber_cursor);
+                               set_canvas_cursor (_cursors->grabber);
                                break;
                        }
                }
@@ -1523,7 +1871,8 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
 
                if (!reinterpret_cast<RegionView *> (item->get_data ("regionview"))->name_active()) {
                        if (mouse_mode == MouseObject && is_drawable()) {
-                               track_canvas->get_window()->set_cursor (*trimmer_cursor);
+                               set_canvas_cursor_for_region_view (event->crossing.x, entered_regionview);
+                               _over_region_trim_target = true;
                        }
                }
                break;
@@ -1534,17 +1883,17 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                        Gdk::Cursor *cursor;
                        switch (mouse_mode) {
                        case MouseRange:
-                               cursor = selector_cursor;
+                               cursor = _cursors->selector;
                                break;
                        case MouseZoom:
-                               cursor = zoom_cursor;
+                               cursor = _cursors->zoom_in;
                                break;
                        default:
-                               cursor = cross_hair_cursor;
+                               cursor = _cursors->cross_hair;
                                break;
                        }
 
-                       track_canvas->get_window()->set_cursor (*cursor);
+                       set_canvas_cursor (cursor);
 
                        AutomationTimeAxisView* atv;
                        if ((atv = static_cast<AutomationTimeAxisView*>(item->get_data ("trackview"))) != 0) {
@@ -1561,7 +1910,7 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case MeterBarItem:
        case TempoBarItem:
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*timebar_cursor);
+                       set_canvas_cursor (_cursors->timebar);
                }
                break;
 
@@ -1570,22 +1919,44 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                        break;
                }
                entered_marker = marker;
-               marker->set_color_rgba (ARDOUR_UI::config()->canvasvar_EnteredMarker.get());
+               marker->set_color_rgba (ARDOUR_UI::config()->get_canvasvar_EnteredMarker());
                // fall through
        case MeterMarkerItem:
        case TempoMarkerItem:
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*timebar_cursor);
+                       set_canvas_cursor (_cursors->timebar);
                }
                break;
+
        case FadeInHandleItem:
+               if (mouse_mode == MouseObject && !internal_editing()) {
+                       ArdourCanvas::Rectangle *rect = dynamic_cast<ArdourCanvas::Rectangle *> (item);
+                       if (rect) {
+                               rect->set_fill_color (0xBBBBBBAA);
+                       }
+                       set_canvas_cursor (_cursors->fade_in);
+               }
+               break;
+
        case FadeOutHandleItem:
-               if (mouse_mode == MouseObject) {
-                       ArdourCanvas::SimpleRect *rect = dynamic_cast<ArdourCanvas::SimpleRect *> (item);
+               if (mouse_mode == MouseObject && !internal_editing()) {
+                       ArdourCanvas::Rectangle *rect = dynamic_cast<ArdourCanvas::Rectangle *> (item);
                        if (rect) {
-                               rect->property_fill_color_rgba() = 0;
-                               rect->property_outline_pixels() = 1;
+                               rect->set_fill_color (0xBBBBBBAA);
                        }
+                       set_canvas_cursor (_cursors->fade_out);
+               }
+               break;
+       case FeatureLineItem:
+       {
+               ArdourCanvas::Line *line = dynamic_cast<ArdourCanvas::Line *> (item);
+               line->set_outline_color (0xFF0000FF);
+       }
+       break;
+       
+       case SelectionItem:
+               if ( get_smart_mode() ) {
+                       set_canvas_cursor ();
                }
                break;
 
@@ -1613,11 +1984,11 @@ Editor::enter_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                break;
        }
 
-       return false;
+       return ret;
 }
 
 bool
-Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_type)
+Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent*, ItemType item_type)
 {
        AutomationLine* al;
        ControlPoint* cp;
@@ -1625,37 +1996,35 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        Location *loc;
        RegionView* rv;
        bool is_start;
+       bool ret = true;
 
        switch (item_type) {
        case ControlPointItem:
                cp = reinterpret_cast<ControlPoint*>(item->get_data ("control_point"));
                if (cp->line().the_list()->interpolation() != AutomationList::Discrete) {
-                       if (cp->line().npoints() > 1 && !cp->selected()) {
+                       if (cp->line().npoints() > 1 && !cp->get_selected()) {
                                cp->set_visible (false);
                        }
                }
 
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                }
 
-               hide_verbose_canvas_cursor ();
+               _verbose_cursor->hide ();
                break;
 
        case RegionViewNameHighlight:
+       case LeftFrameHandle:
+       case RightFrameHandle:
        case StartSelectionTrimItem:
        case EndSelectionTrimItem:
        case PlayheadCursorItem:
 
-#ifdef WITH_CMT
-       case ImageFrameHandleStartItem:
-       case ImageFrameHandleEndItem:
-       case MarkerViewHandleStartItem:
-       case MarkerViewHandleEndItem:
-#endif
+               _over_region_trim_target = false;
 
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                }
                break;
 
@@ -1664,19 +2033,22 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
                al = reinterpret_cast<AutomationLine*> (item->get_data ("line"));
                {
                        ArdourCanvas::Line *line = dynamic_cast<ArdourCanvas::Line *> (item);
-                       if (line)
-                               line->property_fill_color_rgba() = al->get_line_color();
+                       if (line) {
+                               line->set_outline_color (al->get_line_color());
+                       }
                }
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                }
                break;
 
        case RegionViewName:
                /* see enter_handler() for notes */
+               _over_region_trim_target = false;
+
                if (!reinterpret_cast<RegionView *> (item->get_data ("regionview"))->name_active()) {
                        if (is_drawable() && mouse_mode == MouseObject) {
-                               track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                               set_canvas_cursor (current_canvas_cursor);
                        }
                }
                break;
@@ -1688,7 +2060,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case TempoBarItem:
        case MarkerBarItem:
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                }
                break;
 
@@ -1705,7 +2077,7 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case TempoMarkerItem:
 
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*timebar_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                }
 
                break;
@@ -1714,31 +2086,33 @@ Editor::leave_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType item_
        case FadeOutHandleItem:
                rv = static_cast<RegionView*>(item->get_data ("regionview"));
                {
-                       ArdourCanvas::SimpleRect *rect = dynamic_cast<ArdourCanvas::SimpleRect *> (item);
+                       ArdourCanvas::Rectangle *rect = dynamic_cast<ArdourCanvas::Rectangle *> (item);
                        if (rect) {
-                               rect->property_fill_color_rgba() = rv->get_fill_color();
-                               rect->property_outline_pixels() = 0;
+                               rect->set_fill_color (rv->get_fill_color());
                        }
                }
+               set_canvas_cursor (current_canvas_cursor);
                break;
 
        case AutomationTrackItem:
                if (is_drawable()) {
-                       track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+                       set_canvas_cursor (current_canvas_cursor);
                        clear_entered_track = true;
                        Glib::signal_idle().connect (sigc::mem_fun(*this, &Editor::left_automation_track));
                }
                break;
+       case FeatureLineItem:
+               {
+                       ArdourCanvas::Line *line = dynamic_cast<ArdourCanvas::Line *> (item);
+                       line->set_outline_color (ARDOUR_UI::config()->get_canvasvar_ZeroLine());
+               }
+               break;
 
        default:
                break;
        }
 
-       if (item_type == RegionItem) {
-               update_join_object_range_location (event->crossing.x, event->crossing.y);
-       }
-               
-       return false;
+       return ret;
 }
 
 gint
@@ -1752,19 +2126,19 @@ Editor::left_automation_track ()
 }
 
 void
-Editor::scrub ()
+Editor::scrub (framepos_t frame, double current_x)
 {
        double delta;
 
        if (scrubbing_direction == 0) {
                /* first move */
-               _session->request_locate (_drag->adjusted_current_frame (0), false);
+               _session->request_locate (frame, false);
                _session->request_transport_speed (0.1);
                scrubbing_direction = 1;
 
        } else {
 
-               if (last_scrub_x > _drag->current_pointer_x()) {
+               if (last_scrub_x > current_x) {
 
                        /* pointer moved to the left */
 
@@ -1773,7 +2147,7 @@ Editor::scrub ()
                                /* we reversed direction to go backwards */
 
                                scrub_reversals++;
-                               scrub_reverse_distance += (int) (last_scrub_x - _drag->current_pointer_x());
+                               scrub_reverse_distance += (int) (last_scrub_x - current_x);
 
                        } else {
 
@@ -1782,8 +2156,8 @@ Editor::scrub ()
                                scrub_reversals = 0;
                                scrub_reverse_distance = 0;
 
-                               delta = 0.01 * (last_scrub_x - _drag->current_pointer_x());
-                               _session->request_transport_speed (_session->transport_speed() - delta);
+                               delta = 0.01 * (last_scrub_x - current_x);
+                               _session->request_transport_speed_nonzero (_session->transport_speed() - delta);
                        }
 
                } else {
@@ -1793,7 +2167,7 @@ Editor::scrub ()
                                /* we reversed direction to go forward */
 
                                scrub_reversals++;
-                               scrub_reverse_distance += (int) (_drag->current_pointer_x() - last_scrub_x);
+                               scrub_reverse_distance += (int) (current_x - last_scrub_x);
 
                        } else {
                                /* still moving to the right */
@@ -1801,8 +2175,8 @@ Editor::scrub ()
                                scrub_reversals = 0;
                                scrub_reverse_distance = 0;
 
-                               delta = 0.01 * (_drag->current_pointer_x() - last_scrub_x);
-                               _session->request_transport_speed (_session->transport_speed() + delta);
+                               delta = 0.01 * (current_x - last_scrub_x);
+                               _session->request_transport_speed_nonzero (_session->transport_speed() + delta);
                        }
                }
 
@@ -1827,12 +2201,14 @@ Editor::scrub ()
                }
        }
 
-       last_scrub_x = _drag->current_pointer_x();
+       last_scrub_x = current_x;
 }
 
 bool
 Editor::motion_handler (ArdourCanvas::Item* /*item*/, GdkEvent* event, bool from_autoscroll)
 {
+       _last_motion_y = event->motion.y;
+
        if (event->motion.is_hint) {
                gint x, y;
 
@@ -1845,7 +2221,7 @@ Editor::motion_handler (ArdourCanvas::Item* /*item*/, GdkEvent* event, bool from
                   event might do, its a good tradeoff.
                */
 
-               track_canvas->get_pointer (x, y);
+               _track_canvas->get_pointer (x, y);
        }
 
        if (current_stepping_trackview) {
@@ -1861,13 +2237,18 @@ Editor::motion_handler (ArdourCanvas::Item* /*item*/, GdkEvent* event, bool from
 
        JoinObjectRangeState const old = _join_object_range_state;
        update_join_object_range_location (event->motion.x, event->motion.y);
-       if (_join_object_range_state != old) {
+
+       if (!_internal_editing && _join_object_range_state != old) {
                set_canvas_cursor ();
        }
 
+       if (!_internal_editing && _over_region_trim_target) {
+               set_canvas_cursor_for_region_view (event->motion.x, entered_regionview);
+       }
+
        bool handled = false;
-       if (_drag) {
-               handled = _drag->motion_handler (event, from_autoscroll);
+       if (_drags->active ()) {
+               handled = _drags->motion_handler (event, from_autoscroll);
        }
 
        if (!handled) {
@@ -1878,8 +2259,8 @@ Editor::motion_handler (ArdourCanvas::Item* /*item*/, GdkEvent* event, bool from
        return true;
 }
 
-void
-Editor::remove_gain_control_point (ArdourCanvas::Item*item, GdkEvent* /*event*/)
+bool
+Editor::can_remove_control_point (ArdourCanvas::Item* item)
 {
        ControlPoint* control_point;
 
@@ -1888,18 +2269,24 @@ Editor::remove_gain_control_point (ArdourCanvas::Item*item, GdkEvent* /*event*/)
                /*NOTREACHED*/
        }
 
-       // We shouldn't remove the first or last gain point
-       if (control_point->line().is_last_point(*control_point) ||
-               control_point->line().is_first_point(*control_point)) {
-               return;
+       AutomationLine& line = control_point->line ();
+       if (dynamic_cast<AudioRegionGainLine*> (&line)) {
+               /* we shouldn't remove the first or last gain point in region gain lines */
+               if (line.is_last_point(*control_point) || line.is_first_point(*control_point)) {
+                       return false;
+               }
        }
 
-       control_point->line().remove_point (*control_point);
+       return true;
 }
 
 void
-Editor::remove_control_point (ArdourCanvas::Item* item, GdkEvent* /*event*/)
+Editor::remove_control_point (ArdourCanvas::Item* item)
 {
+       if (!can_remove_control_point (item)) {
+               return;
+       }
+
        ControlPoint* control_point;
 
        if ((control_point = reinterpret_cast<ControlPoint *> (item->get_data ("control_point"))) == 0) {
@@ -1921,7 +2308,6 @@ Editor::edit_control_point (ArdourCanvas::Item* item)
        }
 
        ControlPointDialog d (p);
-       d.set_position (Gtk::WIN_POS_MOUSE);
        ensure_float (d);
 
        if (d.run () != RESPONSE_ACCEPT) {
@@ -1931,6 +2317,34 @@ Editor::edit_control_point (ArdourCanvas::Item* item)
        p->line().modify_point_y (*p, d.get_y_fraction ());
 }
 
+void
+Editor::edit_notes (TimeAxisViewItem& tavi)
+{
+       MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(&tavi);
+
+       if (!mrv) {
+               return;
+       }
+
+       MidiRegionView::Selection const & s = mrv->selection();
+
+       if (s.empty ()) {
+               return;
+       }
+       
+       EditNoteDialog* d = new EditNoteDialog (&(*s.begin())->region_view(), s);
+        d->show_all ();
+       ensure_float (*d);
+
+        d->signal_response().connect (sigc::bind (sigc::mem_fun (*this, &Editor::note_edit_done), d));
+}
+
+void
+Editor::note_edit_done (int r, EditNoteDialog* d)
+{
+        d->done (r);
+        delete d;
+}
 
 void
 Editor::visible_order_range (int* low, int* high) const
@@ -1967,169 +2381,29 @@ Editor::region_view_item_click (AudioRegionView& rv, GdkEventButton* event)
                RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(tv);
                double speed = 1.0;
                if (rtv && rtv->is_track()) {
-                       speed = rtv->get_diskstream()->speed();
+                       speed = rtv->track()->speed();
                }
 
-               nframes64_t where = get_preferred_edit_position();
+               framepos_t where = get_preferred_edit_position();
 
                if (where >= 0) {
 
                        if (Keyboard::modifier_state_equals (event->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::SecondaryModifier))) {
 
-                               align_region (rv.region(), SyncPoint, (nframes64_t) (where * speed));
+                               align_region (rv.region(), SyncPoint, (framepos_t) (where * speed));
 
                        } else if (Keyboard::modifier_state_equals (event->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 
-                               align_region (rv.region(), End, (nframes64_t) (where * speed));
+                               align_region (rv.region(), End, (framepos_t) (where * speed));
 
                        } else {
 
-                               align_region (rv.region(), Start, (nframes64_t) (where * speed));
+                               align_region (rv.region(), Start, (framepos_t) (where * speed));
                        }
                }
        }
 }
 
-void
-Editor::show_verbose_time_cursor (nframes64_t frame, double offset, double xpos, double ypos)
-{
-       char buf[128];
-       Timecode::Time timecode;
-       BBT_Time bbt;
-       int hours, mins;
-       nframes64_t frame_rate;
-       float secs;
-
-       if (_session == 0) {
-               return;
-       }
-
-       AudioClock::Mode m;
-
-       if (Profile->get_sae() || Profile->get_small_screen()) {
-               m = ARDOUR_UI::instance()->primary_clock.mode();
-       } else {
-               m = ARDOUR_UI::instance()->secondary_clock.mode();
-       }
-
-       switch (m) {
-       case AudioClock::BBT:
-               _session->bbt_time (frame, bbt);
-               snprintf (buf, sizeof (buf), "%02" PRIu32 "|%02" PRIu32 "|%02" PRIu32, bbt.bars, bbt.beats, bbt.ticks);
-               break;
-
-       case AudioClock::Timecode:
-               _session->timecode_time (frame, timecode);
-               snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
-               break;
-
-       case AudioClock::MinSec:
-               /* XXX this is copied from show_verbose_duration_cursor() */
-               frame_rate = _session->frame_rate();
-               hours = frame / (frame_rate * 3600);
-               frame = frame % (frame_rate * 3600);
-               mins = frame / (frame_rate * 60);
-               frame = frame % (frame_rate * 60);
-               secs = (float) frame / (float) frame_rate;
-               snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%.4f", hours, mins, secs);
-               break;
-
-       default:
-               snprintf (buf, sizeof(buf), "%" PRIi64, frame);
-               break;
-       }
-
-       if (xpos >= 0 && ypos >=0) {
-               set_verbose_canvas_cursor (buf, xpos + offset, ypos + offset);
-       } else {
-               set_verbose_canvas_cursor (buf, _drag->current_pointer_x() + offset - horizontal_adjustment.get_value(), _drag->current_pointer_y() + offset - vertical_adjustment.get_value() + canvas_timebars_vsize);
-       }
-       show_verbose_canvas_cursor ();
-}
-
-void
-Editor::show_verbose_duration_cursor (nframes64_t start, nframes64_t end, double offset, double xpos, double ypos)
-{
-       char buf[128];
-       Timecode::Time timecode;
-       BBT_Time sbbt;
-       BBT_Time ebbt;
-       int hours, mins;
-       nframes64_t distance, frame_rate;
-       float secs;
-       Meter meter_at_start(_session->tempo_map().meter_at(start));
-
-       if (_session == 0) {
-               return;
-       }
-
-       AudioClock::Mode m;
-
-       if (Profile->get_sae() || Profile->get_small_screen()) {
-               m = ARDOUR_UI::instance()->primary_clock.mode ();
-       } else {
-               m = ARDOUR_UI::instance()->secondary_clock.mode ();
-       }
-
-       switch (m) {
-       case AudioClock::BBT:
-               _session->bbt_time (start, sbbt);
-               _session->bbt_time (end, ebbt);
-
-               /* subtract */
-               /* XXX this computation won't work well if the
-               user makes a selection that spans any meter changes.
-               */
-
-               ebbt.bars -= sbbt.bars;
-               if (ebbt.beats >= sbbt.beats) {
-                       ebbt.beats -= sbbt.beats;
-               } else {
-                       ebbt.bars--;
-                       ebbt.beats =  int(meter_at_start.beats_per_bar()) + ebbt.beats - sbbt.beats;
-               }
-               if (ebbt.ticks >= sbbt.ticks) {
-                       ebbt.ticks -= sbbt.ticks;
-               } else {
-                       ebbt.beats--;
-                       ebbt.ticks = int(Meter::ticks_per_beat) + ebbt.ticks - sbbt.ticks;
-               }
-
-               snprintf (buf, sizeof (buf), "%02" PRIu32 "|%02" PRIu32 "|%02" PRIu32, ebbt.bars, ebbt.beats, ebbt.ticks);
-               break;
-
-       case AudioClock::Timecode:
-               _session->timecode_duration (end - start, timecode);
-               snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
-               break;
-
-       case AudioClock::MinSec:
-               /* XXX this stuff should be elsewhere.. */
-               distance = end - start;
-               frame_rate = _session->frame_rate();
-               hours = distance / (frame_rate * 3600);
-               distance = distance % (frame_rate * 3600);
-               mins = distance / (frame_rate * 60);
-               distance = distance % (frame_rate * 60);
-               secs = (float) distance / (float) frame_rate;
-               snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%.4f", hours, mins, secs);
-               break;
-
-       default:
-               snprintf (buf, sizeof(buf), "%" PRIi64, end - start);
-               break;
-       }
-
-       if (xpos >= 0 && ypos >=0) {
-               set_verbose_canvas_cursor (buf, xpos + offset, ypos + offset);
-       }
-       else {
-               set_verbose_canvas_cursor (buf, _drag->current_pointer_x() + offset, _drag->current_pointer_y() + offset);
-       }
-
-       show_verbose_canvas_cursor ();
-}
-
 void
 Editor::collect_new_region_view (RegionView* rv)
 {
@@ -2154,201 +2428,42 @@ Editor::cancel_selection ()
        clicked_selection = 0;
 }
 
-
-void
-Editor::single_contents_trim (RegionView& rv, nframes64_t frame_delta, bool left_direction, bool swap_direction, bool obey_snap)
-{
-       boost::shared_ptr<Region> region (rv.region());
-
-       if (region->locked()) {
-               return;
-       }
-
-       nframes64_t new_bound;
-
-       double speed = 1.0;
-       TimeAxisView* tvp = clicked_axisview;
-       RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
-
-       if (tv && tv->is_track()) {
-               speed = tv->get_diskstream()->speed();
-       }
-
-       if (left_direction) {
-               if (swap_direction) {
-                       new_bound = (nframes64_t) (region->position()/speed) + frame_delta;
-               } else {
-                       new_bound = (nframes64_t) (region->position()/speed) - frame_delta;
-               }
-       } else {
-               if (swap_direction) {
-                       new_bound = (nframes64_t) (region->position()/speed) - frame_delta;
-               } else {
-                       new_bound = (nframes64_t) (region->position()/speed) + frame_delta;
-               }
-       }
-
-       if (obey_snap) {
-               snap_to (new_bound);
-       }
-       region->trim_start ((nframes64_t) (new_bound * speed), this);
-       rv.region_changed (StartChanged);
-}
-
-void
-Editor::single_start_trim (RegionView& rv, nframes64_t frame_delta, bool left_direction, bool obey_snap, bool no_overlap)
-{
-       boost::shared_ptr<Region> region (rv.region());
-
-       if (region->locked()) {
-               return;
-       }
-
-       nframes64_t new_bound;
-
-       double speed = 1.0;
-       TimeAxisView* tvp = clicked_axisview;
-       RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
-
-       if (tv && tv->is_track()) {
-               speed = tv->get_diskstream()->speed();
-       }
-
-       if (left_direction) {
-               new_bound = (nframes64_t) (region->position()/speed) - frame_delta;
-       } else {
-               new_bound = (nframes64_t) (region->position()/speed) + frame_delta;
-       }
-
-       if (obey_snap) {
-               snap_to (new_bound, (left_direction ? 0 : 1));
-       }
-
-       nframes64_t pre_trim_first_frame = region->first_frame();
-
-       region->trim_front ((nframes64_t) (new_bound * speed), this);
-
-       if (no_overlap) {
-               //Get the next region on the left of this region and shrink/expand it.
-               boost::shared_ptr<Playlist> playlist (region->playlist());
-               boost::shared_ptr<Region> region_left = playlist->find_next_region (pre_trim_first_frame, End, 0);
-
-               bool regions_touching = false;
-
-               if (region_left != 0 && (pre_trim_first_frame == region_left->last_frame() + 1)){
-                   regions_touching = true;
-               }
-
-               //Only trim region on the left if the first frame has gone beyond the left region's last frame.
-               if (region_left != 0 &&
-                       (region_left->last_frame() > region->first_frame() || regions_touching))
-               {
-                       region_left->trim_end(region->first_frame() - 1, this);
-               }
-       }
-
-       rv.region_changed (Change (LengthChanged|PositionChanged|StartChanged));
-}
-
 void
-Editor::single_end_trim (RegionView& rv, nframes64_t frame_delta, bool left_direction, bool obey_snap, bool no_overlap)
+Editor::cancel_time_selection ()
 {
-       boost::shared_ptr<Region> region (rv.region());
-
-       if (region->locked()) {
-               return;
-       }
-
-       nframes64_t new_bound;
-
-       double speed = 1.0;
-       TimeAxisView* tvp = clicked_axisview;
-       RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
-
-       if (tv && tv->is_track()) {
-               speed = tv->get_diskstream()->speed();
-       }
-
-       if (left_direction) {
-               new_bound = (nframes64_t) ((region->last_frame() + 1)/speed) - frame_delta;
-       } else {
-               new_bound = (nframes64_t) ((region->last_frame() + 1)/speed) + frame_delta;
-       }
-
-       if (obey_snap) {
-               snap_to (new_bound);
-       }
-
-       nframes64_t pre_trim_last_frame = region->last_frame();
-
-       region->trim_end ((nframes64_t) (new_bound * speed), this);
-
-       if (no_overlap) {
-               //Get the next region on the right of this region and shrink/expand it.
-               boost::shared_ptr<Playlist> playlist (region->playlist());
-               boost::shared_ptr<Region> region_right = playlist->find_next_region (pre_trim_last_frame, Start, 1);
-
-               bool regions_touching = false;
-
-               if (region_right != 0 && (pre_trim_last_frame == region_right->first_frame() - 1)){
-                   regions_touching = true;
-               }
-
-               //Only trim region on the right if the last frame has gone beyond the right region's first frame.
-               if (region_right != 0 &&
-                       (region_right->first_frame() < region->last_frame() || regions_touching))
-               {
-                       region_right->trim_front(region->last_frame() + 1, this);
-               }
-
-               rv.region_changed (Change (LengthChanged|PositionChanged|StartChanged));
-       }
-       else {
-               rv.region_changed (LengthChanged);
+    for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+               (*i)->hide_selection ();
        }
-}
-
+       selection->time.clear ();
+       clicked_selection = 0;
+}      
 
 void
-Editor::point_trim (GdkEvent* event)
+Editor::point_trim (GdkEvent* event, framepos_t new_bound)
 {
        RegionView* rv = clicked_regionview;
 
-       nframes64_t new_bound = _drag->adjusted_current_frame (event);
-
-       snap_to_with_modifier (new_bound, event);
-
        /* Choose action dependant on which button was pressed */
        switch (event->button.button) {
        case 1:
-               begin_reversible_command (_("Start point trim"));
+               begin_reversible_command (_("start point trim"));
 
                if (selection->selected (rv)) {
                        for (list<RegionView*>::const_iterator i = selection->regions.by_layer().begin();
                             i != selection->regions.by_layer().end(); ++i)
                        {
-                               if ( (*i) == NULL){
-                                   cerr << "region view contains null region" << endl;
-                               }
-
                                if (!(*i)->region()->locked()) {
-                                       boost::shared_ptr<Playlist> pl = (*i)->region()->playlist();
-                                       XMLNode &before = pl->get_state();
-
-                                       (*i)->region()->trim_front (new_bound, this);
-
-                                       XMLNode &after = pl->get_state();
-                                       _session->add_command(new MementoCommand<Playlist>(*pl.get(), &before, &after));
+                                       (*i)->region()->clear_changes ();
+                                       (*i)->region()->trim_front (new_bound);
+                                       _session->add_command(new StatefulDiffCommand ((*i)->region()));
                                }
                        }
 
                } else {
                        if (!rv->region()->locked()) {
-                               boost::shared_ptr<Playlist> pl = rv->region()->playlist();
-                               XMLNode &before = pl->get_state();
-                               rv->region()->trim_front (new_bound, this);
-                               XMLNode &after = pl->get_state();
-                               _session->add_command(new MementoCommand<Playlist>(*pl.get(), &before, &after));
+                               rv->region()->clear_changes ();
+                               rv->region()->trim_front (new_bound);
+                               _session->add_command(new StatefulDiffCommand (rv->region()));
                        }
                }
 
@@ -2363,22 +2478,18 @@ Editor::point_trim (GdkEvent* event)
                        for (list<RegionView*>::const_iterator i = selection->regions.by_layer().begin(); i != selection->regions.by_layer().end(); ++i)
                        {
                                if (!(*i)->region()->locked()) {
-                                       boost::shared_ptr<Playlist> pl = (*i)->region()->playlist();
-                                       XMLNode &before = pl->get_state();
-                                       (*i)->region()->trim_end (new_bound, this);
-                                       XMLNode &after = pl->get_state();
-                                       _session->add_command(new MementoCommand<Playlist>(*pl.get(), &before, &after));
+                                       (*i)->region()->clear_changes();
+                                       (*i)->region()->trim_end (new_bound);
+                                       _session->add_command(new StatefulDiffCommand ((*i)->region()));
                                }
                        }
 
                } else {
 
                        if (!rv->region()->locked()) {
-                               boost::shared_ptr<Playlist> pl = rv->region()->playlist();
-                               XMLNode &before = pl->get_state();
-                               rv->region()->trim_end (new_bound, this);
-                               XMLNode &after = pl->get_state();
-                               _session->add_command (new MementoCommand<Playlist>(*pl.get(), &before, &after));
+                               rv->region()->clear_changes ();
+                               rv->region()->trim_end (new_bound);
+                               _session->add_command (new StatefulDiffCommand (rv->region()));
                        }
                }
 
@@ -2390,24 +2501,6 @@ Editor::point_trim (GdkEvent* event)
        }
 }
 
-void
-Editor::thaw_region_after_trim (RegionView& rv)
-{
-       boost::shared_ptr<Region> region (rv.region());
-
-       if (region->locked()) {
-               return;
-       }
-
-       region->thaw (_("trimmed region"));
-
-       AudioRegionView* arv = dynamic_cast<AudioRegionView*>(&rv);
-
-       if (arv) {
-               arv->unhide_envelope ();
-       }
-}
-
 void
 Editor::hide_marker (ArdourCanvas::Item* item, GdkEvent* /*event*/)
 {
@@ -2425,16 +2518,13 @@ Editor::hide_marker (ArdourCanvas::Item* item, GdkEvent* /*event*/)
 
 
 void
-Editor::reposition_zoom_rect (nframes64_t start, nframes64_t end)
+Editor::reposition_zoom_rect (framepos_t start, framepos_t end)
 {
-       double x1 = frame_to_pixel (start);
-       double x2 = frame_to_pixel (end);
-       double y2 = full_canvas_height - 1.0;
-
-       zoom_rect->property_x1() = x1;
-       zoom_rect->property_y1() = 1.0;
-       zoom_rect->property_x2() = x2;
-       zoom_rect->property_y2() = y2;
+       double x1 = sample_to_pixel (start);
+       double x2 = sample_to_pixel (end);
+       double y2 = _full_canvas_height - 1.0;
+
+       zoom_rect->set (ArdourCanvas::Rect (x1, 1.0, x2, y2));
 }
 
 
@@ -2464,7 +2554,7 @@ Editor::mouse_rename_region (ArdourCanvas::Item* /*item*/, GdkEvent* /*event*/)
 
 
 void
-Editor::mouse_brush_insert_region (RegionView* rv, nframes64_t pos)
+Editor::mouse_brush_insert_region (RegionView* rv, framepos_t pos)
 {
        /* no brushing without a useful snap setting */
 
@@ -2496,16 +2586,16 @@ Editor::mouse_brush_insert_region (RegionView* rv, nframes64_t pos)
        }
 
        boost::shared_ptr<Playlist> playlist = rtv->playlist();
-       double speed = rtv->get_diskstream()->speed();
+       double speed = rtv->track()->speed();
 
-       XMLNode &before = playlist->get_state();
-       playlist->add_region (RegionFactory::create (rv->region()), (nframes64_t) (pos * speed));
-       XMLNode &after = playlist->get_state();
-       _session->add_command(new MementoCommand<Playlist>(*playlist.get(), &before, &after));
+       playlist->clear_changes ();
+       boost::shared_ptr<Region> new_region (RegionFactory::create (rv->region(), true));
+       playlist->add_region (new_region, (framepos_t) (pos * speed));
+       _session->add_command (new StatefulDiffCommand (playlist));
 
-       // playlist is frozen, so we have to update manually
+       // playlist is frozen, so we have to update manually XXX this is disgusting
 
-       playlist->Modified(); /* EMIT SIGNAL */
+       playlist->RegionAdded (new_region); /* EMIT SIGNAL */
 }
 
 gint
@@ -2519,57 +2609,53 @@ Editor::track_height_step_timeout ()
 }
 
 void
-Editor::start_region_grab (ArdourCanvas::Item* item, GdkEvent* event, RegionView* region_view)
+Editor::add_region_drag (ArdourCanvas::Item* item, GdkEvent*, RegionView* region_view)
 {
        assert (region_view);
 
-       _region_motion_group->raise_to_top ();
+       if (!region_view->region()->playlist()) {
+               return;
+       }
 
-       assert (_drag == 0);
+       _region_motion_group->raise_to_top ();
 
        if (Config->get_edit_mode() == Splice) {
-               _drag = new RegionSpliceDrag (this, item, region_view, selection->regions.by_layer());
+               _drags->add (new RegionSpliceDrag (this, item, region_view, selection->regions.by_layer()));
        } else {
-               RegionSelection s = get_equivalent_regions (selection->regions, RouteGroup::Edit);
-               _drag = new RegionMoveDrag (this, item, region_view, s.by_layer(), false, false);
+               _drags->add (new RegionMoveDrag (this, item, region_view, selection->regions.by_layer(), false, false));
        }
-
-       _drag->start_grab (event);
-
-       begin_reversible_command (_("move region(s)"));
-
-       /* sync the canvas to what we think is its current state */
-       update_canvas_now();
 }
 
 void
-Editor::start_region_copy_grab (ArdourCanvas::Item* item, GdkEvent* event, RegionView* region_view)
+Editor::add_region_copy_drag (ArdourCanvas::Item* item, GdkEvent*, RegionView* region_view)
 {
        assert (region_view);
-       assert (_drag == 0);
+
+       if (!region_view->region()->playlist()) {
+               return;
+       }
 
        _region_motion_group->raise_to_top ();
 
-       RegionSelection s = get_equivalent_regions (selection->regions, RouteGroup::Edit);
-       _drag = new RegionMoveDrag (this, item, region_view, s.by_layer(), false, true);
-       _drag->start_grab(event);
+       _drags->add (new RegionMoveDrag (this, item, region_view, selection->regions.by_layer(), false, true));
 }
 
 void
-Editor::start_region_brush_grab (ArdourCanvas::Item* item, GdkEvent* event, RegionView* region_view)
+Editor::add_region_brush_drag (ArdourCanvas::Item* item, GdkEvent*, RegionView* region_view)
 {
        assert (region_view);
-       assert (_drag == 0);
+
+       if (!region_view->region()->playlist()) {
+               return;
+       }
 
        if (Config->get_edit_mode() == Splice) {
                return;
        }
 
-       RegionSelection s = get_equivalent_regions (selection->regions, RouteGroup::Edit);
-       _drag = new RegionMoveDrag (this, item, region_view, s.by_layer(), true, false);
-       _drag->start_grab (event);
+       _drags->add (new RegionMoveDrag (this, item, region_view, selection->regions.by_layer(), true, false));
 
-       begin_reversible_command (_("Drag region brush"));
+       begin_reversible_command (Operations::drag_region_brush);
 }
 
 /** Start a grab where a time range is selected, track(s) are selected, and the
@@ -2610,14 +2696,13 @@ Editor::start_selection_grab (ArdourCanvas::Item* /*item*/, GdkEvent* event)
           creating the new region and another for moving it.
        */
 
-       begin_reversible_command (_("selection grab"));
+       begin_reversible_command (Operations::selection_grab);
 
        boost::shared_ptr<Playlist> playlist = clicked_axisview->playlist();
 
-       XMLNode *before = &(playlist->get_state());
+       playlist->clear_changes ();
        clicked_routeview->playlist()->add_region (region, selection->time[clicked_selection].start);
-       XMLNode *after = &(playlist->get_state());
-       _session->add_command(new MementoCommand<Playlist>(*playlist, before, after));
+       _session->add_command(new StatefulDiffCommand (playlist));
 
        commit_reversible_command ();
 
@@ -2633,88 +2718,101 @@ Editor::start_selection_grab (ArdourCanvas::Item* /*item*/, GdkEvent* event)
        */
        selection->set (latest_regionviews);
 
-       assert (_drag == 0);
-       _drag = new RegionMoveDrag (this, latest_regionviews.front()->get_canvas_group(), latest_regionviews.front(), latest_regionviews, false, false);
-       _drag->start_grab (event);
+       _drags->set (new RegionMoveDrag (this, latest_regionviews.front()->get_canvas_group(), latest_regionviews.front(), latest_regionviews, false, false), event);
 }
 
 void
-Editor::break_drag ()
+Editor::escape ()
 {
-       if (_drag) {
-               _drag->break_drag ();
+       if (_drags->active ()) {
+               _drags->abort ();
+       } else {
+               selection->clear ();
        }
 }
 
 void
 Editor::set_internal_edit (bool yn)
 {
-       _internal_editing = yn;
+       if (_internal_editing == yn) {
+               return;
+       }
 
+       _internal_editing = yn;
+       
        if (yn) {
-               mouse_select_button.set_image (*(manage (new Image (::get_icon("midi_tool_pencil")))));
-               mouse_select_button.get_image ()->show ();
+                pre_internal_mouse_mode = mouse_mode;
+               pre_internal_snap_type = _snap_type;
+               pre_internal_snap_mode = _snap_mode;
 
-               for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
-                       MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (*i);
-                       if (mtv) {
-                               mtv->start_step_editing ();
-                       }
-               }
-               start_step_editing ();
+                for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+                        (*i)->enter_internal_edit_mode ();
+                }
 
-       } else {
+               set_snap_to (internal_snap_type);
+               set_snap_mode (internal_snap_mode);
 
-               mouse_select_button.set_image (*(manage (new Image (::get_icon("tool_range")))));
-               mouse_select_button.get_image ()->show ();
-               stop_step_editing ();
+       } else {
 
-               for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
-                       MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (*i);
-                       if (mtv) {
-                               mtv->stop_step_editing ();
-                       }
-               }
-       }
+               internal_snap_mode = _snap_mode;
+               internal_snap_type = _snap_type;
 
-       set_canvas_cursor ();
+                for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+                        (*i)->leave_internal_edit_mode ();
+                }
 
+                if (mouse_mode == MouseDraw && pre_internal_mouse_mode != MouseDraw) {
+                        /* we were drawing .. flip back to something sensible */
+                        set_mouse_mode (pre_internal_mouse_mode);
+                }
 
+               set_snap_to (pre_internal_snap_type);
+               set_snap_mode (pre_internal_snap_mode);
+       }
+       
+       set_canvas_cursor ();
 }
 
 /** Update _join_object_range_state which indicate whether we are over the top or bottom half of a region view,
  *  used by the `join object/range' tool mode.
  */
 void
-Editor::update_join_object_range_location (double x, double y)
+Editor::update_join_object_range_location (double /*x*/, double y)
 {
-       if (join_object_range_button.get_active() == false || (mouse_mode != MouseRange && mouse_mode != MouseObject)) {
+       /* XXX: actually, this decides based on whether the mouse is in the top
+          or bottom half of a the waveform part RouteTimeAxisView;
+
+          Note that entered_{track,regionview} is not always setup (e.g. if
+          the mouse is over a TimeSelection), and to get a Region
+          that we're over requires searching the playlist.
+       */
+
+       if ( !get_smart_mode() ) {
                _join_object_range_state = JOIN_OBJECT_RANGE_NONE;
                return;
        }
 
-       if (entered_regionview) {
+       if (mouse_mode == MouseObject) {
+               _join_object_range_state = JOIN_OBJECT_RANGE_OBJECT;
+       } else if (mouse_mode == MouseRange) {
+               _join_object_range_state = JOIN_OBJECT_RANGE_RANGE;
+       }
 
-               double cx = x;
-               double cy = y;
-               entered_regionview->get_canvas_group()->w2i (cx, cy);
-               
-               double x1;
-               double y1;
-               double x2;
-               double y2;
-               entered_regionview->get_canvas_group()->get_bounds (x1, y1, x2, y2);
-               
-               bool const top_half = cy < (y2 - y1) / 2;
-               
-               _join_object_range_state = top_half ? JOIN_OBJECT_RANGE_RANGE : JOIN_OBJECT_RANGE_OBJECT;
-               
-       } else {
+       /* XXX: maybe we should make entered_track work in all cases, rather than resorting to this */
+       pair<TimeAxisView*, int> tvp = trackview_by_y_position (y);
+
+       if (tvp.first) {
+
+               RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
+               if (rtv) {
+
+                       double cx = 0;
+                       double cy = y;
+                       rtv->canvas_display()->canvas_to_item (cx, cy);
 
-               if (mouse_mode == MouseObject) {
-                       _join_object_range_state = JOIN_OBJECT_RANGE_OBJECT;
-               } else if (mouse_mode == MouseRange) {
-                       _join_object_range_state = JOIN_OBJECT_RANGE_RANGE;
+                       double const c = cy / (rtv->view()->child_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE);
+
+                       _join_object_range_state = c <= 0.5 ? JOIN_OBJECT_RANGE_RANGE : JOIN_OBJECT_RANGE_OBJECT;
                }
        }
 }
@@ -2730,3 +2828,61 @@ Editor::effective_mouse_mode () const
 
        return mouse_mode;
 }
+
+void
+Editor::remove_midi_note (ArdourCanvas::Item* item, GdkEvent *)
+{
+       NoteBase* e = reinterpret_cast<NoteBase*> (item->get_data ("notebase"));
+       assert (e);
+
+       e->region_view().delete_note (e->note ());
+}
+
+void
+Editor::set_canvas_cursor_for_region_view (double x, RegionView* rv)
+{
+       /* XXX: this check should not be necessary */
+       if (rv == 0) {
+               return;
+       }
+
+       assert (rv);
+
+       ArdourCanvas::Group* g = rv->get_canvas_group ();
+       ArdourCanvas::Group* p = g->parent ();
+
+       /* Compute x in region view parent coordinates */
+       double dy = 0;
+       p->canvas_to_item (x, dy);
+
+       boost::optional<ArdourCanvas::Rect> item_bbox = g->bounding_box ();
+       assert (item_bbox);
+       ArdourCanvas::Rect parent_bbox = g->item_to_parent (item_bbox.get ());
+
+       /* Halfway across the region */
+       double const h = (parent_bbox.x0 + parent_bbox.x1) / 2;
+
+       Trimmable::CanTrim ct = rv->region()->can_trim ();
+       if (x <= h) {
+               if (ct & Trimmable::FrontTrimEarlier) {
+                       set_canvas_cursor (_cursors->left_side_trim);
+               } else {
+                       set_canvas_cursor (_cursors->left_side_trim_right_only);
+               }
+       } else {
+               if (ct & Trimmable::EndTrimLater) {
+                       set_canvas_cursor (_cursors->right_side_trim);
+               } else {
+                       set_canvas_cursor (_cursors->right_side_trim_left_only);
+               }
+       }
+}
+
+/** Obtain the pointer position in canvas coordinates */
+void
+Editor::get_pointer_position (double& x, double& y) const
+{
+       int px, py;
+       _track_canvas->get_pointer (px, py);
+       _track_canvas->window_to_canvas (px, py, x, y);
+}