Per-region MIDI CC "automation".
[ardour.git] / gtk2_ardour / crossfade_edit.cc
index d999c823ac291c7ce3ead083a3050c454d951373..8e9c4f07dd15b9b362dce7539922e1e5e85f704d 100644 (file)
@@ -15,7 +15,6 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id$
 */
 
 #include <cmath>
 #include <gtkmm/image.h>
 #include <gtkmm/scrolledwindow.h>
 
+#include <libgnomecanvasmm/line.h>
+
 #include <ardour/automation_event.h>
 #include <ardour/curve.h>
 #include <ardour/crossfade.h>
 #include <ardour/session.h>
 #include <ardour/auditioner.h>
 #include <ardour/audioplaylist.h>
+#include <ardour/audiosource.h>
 #include <ardour/playlist_templates.h>
+#include <ardour/region_factory.h>
 
 #include <gtkmm2ext/gtk_ui.h>
 
 #include "ardour_ui.h"
 #include "crossfade_edit.h"
 #include "rgb_macros.h"
-#include "canvas-simplerect.h"
-#include "canvas-waveview.h"
 #include "keyboard.h"
 #include "utils.h"
 #include "gui_thread.h"
+#include "canvas_impl.h"
+#include "simplerect.h"
+#include "waveview.h"
 
 using namespace std;
 using namespace ARDOUR;
+using namespace PBD;
 using namespace Gtk;
 using namespace sigc;
 using namespace Editing;
@@ -58,19 +63,15 @@ const double CrossfadeEditor::canvas_border = 10;
 CrossfadeEditor::Presets* CrossfadeEditor::fade_in_presets = 0;
 CrossfadeEditor::Presets* CrossfadeEditor::fade_out_presets = 0;
 
-#include "crossfade_xpms.h"
-
 CrossfadeEditor::Half::Half ()
        : line (0), 
-         normative_curve (0.0, 1.0, 1.0, true),
-         gain_curve (0.0, 2.0, 1.0, true)
+         normative_curve (Parameter(GainAutomation), 0.0, 1.0, 1.0), // FIXME: GainAutomation?
+         gain_curve (Parameter(GainAutomation), 0.0, 2.0, 1.0)
 {
 }
 
-CrossfadeEditor::CrossfadeEditor (Session& s, Crossfade& xf, double my, double mxy)
-       : ArdourDialog (_("crossfade editor")),
-         cancel_button (_("Cancel")),
-         ok_button (_("OK")),
+CrossfadeEditor::CrossfadeEditor (Session& s, boost::shared_ptr<Crossfade> xf, double my, double mxy)
+       : ArdourDialog (_("ardour: x-fade edit")),
          xfade (xf),
          session (s),
          clear_button (_("Clear")),
@@ -93,12 +94,10 @@ CrossfadeEditor::CrossfadeEditor (Session& s, Crossfade& xf, double my, double m
          select_in_button (_("Fade In")),
          select_out_button (_("Fade Out"))
 {
-       set_wmclass ("ardour_automationedit", "Ardour");
+       set_wmclass (X_("ardour_automationedit"), "Ardour");
        set_name ("CrossfadeEditWindow");
-       set_title (_("ardour: x-fade edit"));
        set_position (Gtk::WIN_POS_MOUSE);
 
-       add (vpacker);
        add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 
        RadioButtonGroup sel_but_group = select_in_button.get_group();
@@ -106,6 +105,12 @@ CrossfadeEditor::CrossfadeEditor (Session& s, Crossfade& xf, double my, double m
        select_out_button.set_mode (false);
        select_in_button.set_mode (false);
 
+       get_action_area()->set_layout(BUTTONBOX_SPREAD);
+       get_action_area()->pack_start(clear_button);
+       get_action_area()->pack_start(revert_button);
+       cancel_button = add_button ("Cancel", RESPONSE_CANCEL);
+       ok_button = add_button ("OK", RESPONSE_ACCEPT);
+
        if (fade_in_presets == 0) {
                build_presets ();
        }
@@ -113,71 +118,38 @@ CrossfadeEditor::CrossfadeEditor (Session& s, Crossfade& xf, double my, double m
        point_grabbed = false;
        toplevel = 0;
 
-       _canvas = gnome_canvas_new_aa ();
-
-       canvas = Glib::wrap (_canvas);
+       canvas = new ArdourCanvas::CanvasAA ();
        canvas->signal_size_allocate().connect (mem_fun(*this, &CrossfadeEditor::canvas_allocation));
        canvas->set_size_request (425, 200);
-
-       toplevel = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS(_canvas)),
-                                       gnome_canvas_simplerect_get_type(),
-                                       "x1", 0.0,
-                                       "y1", 0.0,
-                                       "x2", 10.0,
-                                       "y2", 10.0,
-                                       "fill", (gboolean) TRUE,
-                                       "fill_color_rgba", (guint32) color_map[cCrossfadeEditorBase],
-                                       "outline_pixels", 0,
-                                       NULL);
-
-       gtk_signal_connect (GTK_OBJECT(toplevel),
-                           "event",
-                           (GtkSignalFunc) _canvas_event,
-                           this);
-
-       fade[Out].line = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS(_canvas)),
-                                             gnome_canvas_line_get_type (),
-                                             "width_pixels", (guint) 1,
-                                             "fill_color_rgba", color_map[cCrossfadeEditorLine],
-                                             NULL);
-
-       fade[Out].shading = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS(_canvas)),
-                                                gnome_canvas_polygon_get_type(),
-                                                "fill_color_rgba", color_map[cCrossfadeEditorLineShading],
-                                                NULL);
        
-       fade[In].line = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS(_canvas)),
-                                            gnome_canvas_line_get_type (),
-                                            "width_pixels", (guint) 1,
-                                            "fill_color_rgba", color_map[cCrossfadeEditorLine],
-                                            NULL);
+       toplevel = new ArdourCanvas::SimpleRect (*(canvas->root()));
+       toplevel->property_x1() =  0.0;
+       toplevel->property_y1() =  0.0;
+       toplevel->property_x2() =  10.0;
+       toplevel->property_y2() =  10.0;
+       toplevel->property_fill() =  true;
+       toplevel->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CrossfadeEditorBase.get();
+       toplevel->property_outline_pixels() =  0;
+       toplevel->signal_event().connect (mem_fun (*this, &CrossfadeEditor::canvas_event));
        
-       fade[In].shading = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS(_canvas)),
-                                               gnome_canvas_polygon_get_type(),
-                                               "fill_color_rgba", color_map[cCrossfadeEditorLineShading],
-                                               NULL);
-
-       gtk_signal_connect (GTK_OBJECT(fade[In].shading),
-                           "event",
-                           (GtkSignalFunc) _canvas_event,
-                           this);
-
-
-       gtk_signal_connect (GTK_OBJECT(fade[Out].shading),
-                           "event",
-                           (GtkSignalFunc) _canvas_event,
-                           this);
-
-       gtk_signal_connect (GTK_OBJECT(fade[In].line),
-                           "event",
-                           (GtkSignalFunc) _curve_event,
-                           this);
-
-       gtk_signal_connect (GTK_OBJECT(fade[Out].line),
-                           "event",
-                           (GtkSignalFunc) _curve_event,
-                           this);
+       fade[Out].line = new ArdourCanvas::Line (*(canvas->root()));
+       fade[Out].line->property_width_pixels() = 1;
+       fade[Out].line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CrossfadeEditorLine.get();
+               
+       fade[Out].shading = new ArdourCanvas::Polygon (*(canvas->root()));
+       fade[Out].shading->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CrossfadeEditorLineShading.get();
 
+       fade[In].line = new ArdourCanvas::Line (*(canvas->root()));
+       fade[In].line->property_width_pixels() = 1;
+       fade[In].line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CrossfadeEditorLine.get();
+               
+       fade[In].shading = new ArdourCanvas::Polygon (*(canvas->root()));
+       fade[In].shading->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CrossfadeEditorLineShading.get();
+       
+       fade[In].shading->signal_event().connect (mem_fun (*this, &CrossfadeEditor::canvas_event));
+       fade[In].line->signal_event().connect (mem_fun (*this, &CrossfadeEditor::curve_event));
+       fade[Out].shading->signal_event().connect (mem_fun (*this, &CrossfadeEditor::canvas_event));
+       fade[Out].line->signal_event().connect (mem_fun (*this, &CrossfadeEditor::curve_event));
 
        select_in_button.set_name (X_("CrossfadeEditCurveButton"));
        select_out_button.set_name (X_("CrossfadeEditCurveButton"));
@@ -220,7 +192,7 @@ CrossfadeEditor::CrossfadeEditor (Session& s, Crossfade& xf, double my, double m
 
        for (list<Preset*>::iterator i = fade_in_presets->begin(); i != fade_in_presets->end(); ++i) {
 
-               pxmap = manage (new Image (Gdk::Pixbuf::create_from_xpm_data((*i)->xpm)));
+               pxmap = manage (new Image (::get_icon ((*i)->image_name)));
                pbutton = manage (new Button);
                pbutton->add (*pxmap);
                pbutton->set_name ("CrossfadeEditButton");
@@ -241,7 +213,7 @@ CrossfadeEditor::CrossfadeEditor (Session& s, Crossfade& xf, double my, double m
 
        for (list<Preset*>::iterator i = fade_out_presets->begin(); i != fade_out_presets->end(); ++i) {
 
-               pxmap = manage (new Image (Gdk::Pixbuf::create_from_xpm_data((*i)->xpm)));
+               pxmap = manage (new Image (::get_icon ((*i)->image_name)));
                pbutton = manage (new Button);
                pbutton->add (*pxmap);
                pbutton->set_name ("CrossfadeEditButton");
@@ -259,8 +231,8 @@ CrossfadeEditor::CrossfadeEditor (Session& s, Crossfade& xf, double my, double m
 
        clear_button.set_name ("CrossfadeEditButton");
        revert_button.set_name ("CrossfadeEditButton");
-       ok_button.set_name ("CrossfadeEditButton");
-       cancel_button.set_name ("CrossfadeEditButton");
+       ok_button->set_name ("CrossfadeEditButton");
+       cancel_button->set_name ("CrossfadeEditButton");
        preroll_button.set_name ("CrossfadeEditButton");
        postroll_button.set_name ("CrossfadeEditButton");
        audition_both_button.set_name ("CrossfadeEditAuditionButton");
@@ -277,21 +249,6 @@ CrossfadeEditor::CrossfadeEditor (Session& s, Crossfade& xf, double my, double m
        audition_left_button.signal_toggled().connect (mem_fun(*this, &CrossfadeEditor::audition_left_toggled));
        audition_left_dry_button.signal_toggled().connect (mem_fun(*this, &CrossfadeEditor::audition_left_dry_toggled));
 
-       action_box.set_border_width (7);
-       action_box.set_spacing (5);
-       action_box.set_homogeneous (false);
-       action_box.pack_end (cancel_button, false, false);
-       action_box.pack_end (ok_button, false, false);
-       action_box.pack_end (revert_button, false, false);
-       action_box.pack_end (clear_button, false, false);
-
-       Frame* edit_frame = manage (new Frame (_("Edit")));
-       edit_frame->set_name (X_("CrossfadeEditFrame"));
-       edit_frame->add (action_box);
-
-       Gtk::HBox* action_center_box = manage (new HBox);
-       action_center_box->pack_start (*edit_frame, true, false);
-
        roll_box.pack_start (preroll_button, false, false);
        roll_box.pack_start (postroll_button, false, false);
 
@@ -304,17 +261,14 @@ CrossfadeEditor::CrossfadeEditor (Session& s, Crossfade& xf, double my, double m
        vpacker2->set_spacing (7);
        vpacker2->pack_start (*acbox, false, false);
        vpacker2->pack_start (*rcenter_box, false, false);
-       vpacker2->pack_start (*action_center_box, false, false);
 
        curve_button_box.set_spacing (7);
        curve_button_box.pack_start (fade_out_table, false, false, 12);
        curve_button_box.pack_start (*vpacker2, false, false, 12);
        curve_button_box.pack_start (fade_in_table, false, false, 12);
        
-       vpacker.set_border_width (12);
-       vpacker.set_spacing (5);
-       vpacker.pack_start (*canvas_frame, true, true);
-       vpacker.pack_start (curve_button_box, false, false);
+       get_vbox()->pack_start (*canvas_frame, true, true);
+       get_vbox()->pack_start (curve_button_box, false, false);
 
        /* button to allow hackers to check the actual curve values */
 
@@ -323,16 +277,17 @@ CrossfadeEditor::CrossfadeEditor (Session& s, Crossfade& xf, double my, double m
 //     vpacker.pack_start (*foobut, false, false);
 
        current = In;
-       set (xfade.fade_in(), In);
+       set (xfade->fade_in(), In);
 
        current = Out;
-       set (xfade.fade_out(), Out);
+       set (xfade->fade_out(), Out);
 
        curve_select_clicked (In);
 
-       xfade.StateChanged.connect (mem_fun(*this, &CrossfadeEditor::xfade_changed));
+       xfade->StateChanged.connect (mem_fun(*this, &CrossfadeEditor::xfade_changed));
 
        session.AuditionActive.connect (mem_fun(*this, &CrossfadeEditor::audition_state_changed));
+       show_all_children();
 }
 
 CrossfadeEditor::~CrossfadeEditor()
@@ -371,10 +326,10 @@ CrossfadeEditor::audition_state_changed (bool yn)
 }
 
 void
-CrossfadeEditor::set (const ARDOUR::Curve& curve, WhichFade which)
+CrossfadeEditor::set (const ARDOUR::AutomationList& curve, WhichFade which)
 {
        double firstx, endx;
-       ARDOUR::Curve::const_iterator the_end;
+       ARDOUR::AutomationList::const_iterator the_end;
 
        for (list<Point*>::iterator i = fade[which].points.begin(); i != fade[which].points.end(); ++i) {
                        delete *i;
@@ -394,7 +349,7 @@ CrossfadeEditor::set (const ARDOUR::Curve& curve, WhichFade which)
        firstx = (*curve.const_begin())->when;
        endx = (*the_end)->when;
 
-       for (ARDOUR::Curve::const_iterator i = curve.const_begin(); i != curve.const_end(); ++i) {
+       for (ARDOUR::AutomationList::const_iterator i = curve.const_begin(); i != curve.const_end(); ++i) {
                
                double xfract = ((*i)->when - firstx) / (endx - firstx);
                double yfract = ((*i)->value - miny) / (maxy - miny);
@@ -416,15 +371,63 @@ CrossfadeEditor::set (const ARDOUR::Curve& curve, WhichFade which)
        swap (which, current);
 }
 
-gint                
-CrossfadeEditor::_canvas_event (GnomeCanvasItem* item, GdkEvent* event, gpointer data)
+bool
+CrossfadeEditor::curve_event (GdkEvent* event)
 {
-       CrossfadeEditor* ed = static_cast<CrossfadeEditor*> (data);
-       return ed->canvas_event (item, event);
+       /* treat it like a toplevel event */
+
+       return canvas_event (event);
 }
 
-gint
-CrossfadeEditor::canvas_event (GnomeCanvasItem* item, GdkEvent* event)
+bool
+CrossfadeEditor::point_event (GdkEvent* event, Point* point)
+{
+
+       if (point->curve != fade[current].line) {
+               return FALSE;
+       }
+
+       switch (event->type) {
+       case GDK_BUTTON_PRESS:
+               point_grabbed = true;
+               break;
+       case GDK_BUTTON_RELEASE:
+               point_grabbed = false;
+
+               if (Keyboard::is_delete_event (&event->button)) {
+                       fade[current].points.remove (point);
+                       delete point;
+               }
+
+               redraw ();
+               break;
+
+       case GDK_MOTION_NOTIFY:
+               if (point_grabbed) {
+                       double new_x, new_y;
+
+                       /* can't drag first or last points horizontally */
+
+                       if (point == fade[current].points.front() || point == fade[current].points.back()) {
+                               new_x = point->x;
+                       } else {
+                               new_x = (event->motion.x - canvas_border)/effective_width();
+                       }
+
+                       new_y = 1.0 - ((event->motion.y - canvas_border)/effective_height());
+                       point->move_to (x_coordinate (new_x), y_coordinate (new_y), 
+                                       new_x, new_y);
+                       redraw ();
+               }
+               break;
+       default:
+               break;
+       }
+       return TRUE;
+}
+
+bool
+CrossfadeEditor::canvas_event (GdkEvent* event)
 {
        switch (event->type) {
        case GDK_BUTTON_PRESS:
@@ -440,7 +443,7 @@ CrossfadeEditor::canvas_event (GnomeCanvasItem* item, GdkEvent* event)
 
 CrossfadeEditor::Point::~Point()
 {
-       gtk_object_destroy (GTK_OBJECT(box));
+       delete box;
 }
 
 CrossfadeEditor::Point*
@@ -448,20 +451,15 @@ CrossfadeEditor::make_point ()
 {
        Point* p = new Point;
 
-       p->box = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS(_canvas)),
-                                     gnome_canvas_simplerect_get_type(),
-                                     "fill", (gboolean) TRUE,
-                                     "fill_color_rgba", color_map[cCrossfadeEditorPointFill],
-                                     "outline_color_rgba", color_map[cCrossfadeEditorPointOutline],
-                                     "outline_pixels", (gint) 1,
-                                     NULL);
+       p->box = new ArdourCanvas::SimpleRect (*(canvas->root()));
+       p->box->property_fill() = true;
+       p->box->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CrossfadeEditorPointFill.get();
+       p->box->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_CrossfadeEditorPointOutline.get();
+       p->box->property_outline_pixels() = 1;
 
        p->curve = fade[current].line;
 
-       gtk_object_set_data (GTK_OBJECT(p->box), "point", p);
-       gtk_signal_connect (GTK_OBJECT(p->box), "event", 
-                           (GtkSignalFunc) _point_event, 
-                           this);
+       p->box->signal_event().connect (bind (mem_fun (*this, &CrossfadeEditor::point_event), p));
        
        return p;
 }
@@ -496,12 +494,12 @@ CrossfadeEditor::Point::move_to (double nx, double ny, double xfract, double yfr
        double x1 = nx - half_size;
        double x2 = nx + half_size;
 
-       gnome_canvas_item_set (box,
-                            "x1", x1,
-                            "x2", x2,
-                            "y1", ny - half_size,
-                            "y2", ny + half_size,
-                            NULL);
+       box->property_x1() = x1;
+       box->property_x2() = x2;
+
+       box->property_y1() = ny - half_size;
+       box->property_y2() = ny + half_size;
+
        x = xfract;
        y = yfract;
 }
@@ -510,17 +508,15 @@ void
 CrossfadeEditor::canvas_allocation (Gtk::Allocation& alloc)
 {
        if (toplevel) {
-               gnome_canvas_item_set (toplevel,
-                                    "x1", 0.0,
-                                    "y1", 0.0,
-                                    "x2", (double) _canvas->allocation.width + canvas_border,
-                                    "y2", (double) _canvas->allocation.height + canvas_border,
-                                    NULL);
+               toplevel->property_x1() = 0.0;
+               toplevel->property_y1() = 0.0;
+               toplevel->property_x2() = (double) canvas->get_allocation().get_width() + canvas_border;
+               toplevel->property_y2() = (double) canvas->get_allocation().get_height() + canvas_border;
        }
-
-       gnome_canvas_set_scroll_region (GNOME_CANVAS(_canvas), 0.0, 0.0,
-                                     _canvas->allocation.width,
-                                     _canvas->allocation.height);
+       
+       canvas->set_scroll_region (0.0, 0.0, 
+                                  canvas->get_allocation().get_width(), 
+                                  canvas->get_allocation().get_height());
 
        Point* end = make_point ();
        PointSorter cmp;
@@ -579,135 +575,62 @@ CrossfadeEditor::canvas_allocation (Gtk::Allocation& alloc)
        redraw ();
        current = old_current;
 
-       double spu = xfade.length() / (double) effective_width();
+       double spu = xfade->length() / (double) effective_width();
 
        if (fade[In].waves.empty()) {
-               make_waves (xfade.in(), In);
+               make_waves (xfade->in(), In);
        }
 
        if (fade[Out].waves.empty()) {
-               make_waves (xfade.out(), Out);
+               make_waves (xfade->out(), Out);
        }
 
        double ht;
-       vector<GnomeCanvasItem*>::iterator i;
+       vector<ArdourCanvas::WaveView*>::iterator i;
        uint32_t n;
 
-       ht = _canvas->allocation.height / xfade.in().n_channels();
+       ht = canvas->get_allocation().get_height() / xfade->in()->n_channels();
 
        for (n = 0, i = fade[In].waves.begin(); i != fade[In].waves.end(); ++i, ++n) {
                double yoff;
 
                yoff = n * ht;
 
-               gnome_canvas_item_set ((*i),
-                                    "y", yoff,
-                                    "height", ht,
-                                    "samples_per_unit", spu,
-                                    NULL);
+               (*i)->property_y() = yoff;
+               (*i)->property_height() = ht;
+               (*i)->property_samples_per_unit() = spu;
        }
 
-       ht = _canvas->allocation.height / xfade.out().n_channels();
+       ht = canvas->get_allocation().get_height() / xfade->out()->n_channels();
 
        for (n = 0, i = fade[Out].waves.begin(); i != fade[Out].waves.end(); ++i, ++n) {
                double yoff;
 
                yoff = n * ht;
 
-               gnome_canvas_item_set ((*i),
-                                    "y", yoff,
-                                    "height", ht,
-                                    "samples_per_unit", spu,
-                                    NULL);
-       }
-
-}
-
-gint
-CrossfadeEditor::_point_event (GnomeCanvasItem* item, GdkEvent* event, gpointer data)
-{
-       CrossfadeEditor* ed = static_cast<CrossfadeEditor*> (data);
-       return ed->point_event (item, event);
-}
-
-gint
-CrossfadeEditor::point_event (GnomeCanvasItem* item, GdkEvent* event)
-{
-       Point* point = static_cast<Point*> (gtk_object_get_data (GTK_OBJECT (item), "point"));
-
-       if (point->curve != fade[current].line) {
-               return FALSE;
-       }
-
-       switch (event->type) {
-       case GDK_BUTTON_PRESS:
-               point_grabbed = true;
-               break;
-       case GDK_BUTTON_RELEASE:
-               point_grabbed = false;
-
-               if (Keyboard::is_delete_event (&event->button)) {
-                       fade[current].points.remove (point);
-                       delete point;
-               }
-
-               redraw ();
-               break;
-
-       case GDK_MOTION_NOTIFY:
-               if (point_grabbed) {
-                       double new_x, new_y;
-
-                       /* can't drag first or last points horizontally */
-
-                       if (point == fade[current].points.front() || point == fade[current].points.back()) {
-                               new_x = point->x;
-                       } else {
-                               new_x = (event->motion.x - canvas_border)/effective_width();
-                       }
-
-                       new_y = 1.0 - ((event->motion.y - canvas_border)/effective_height());
-                       point->move_to (x_coordinate (new_x), y_coordinate (new_y), 
-                                       new_x, new_y);
-                       redraw ();
-               }
-               break;
-       default:
-               break;
+               (*i)->property_y() = yoff;
+               (*i)->property_height() = ht;
+               (*i)->property_samples_per_unit() = spu;
        }
-       return TRUE;
-}
 
-gint
-CrossfadeEditor::_curve_event (GnomeCanvasItem* item, GdkEvent* event, gpointer data)
-{
-       CrossfadeEditor* ed = static_cast<CrossfadeEditor*> (data);
-       return ed->curve_event (item, event);
 }
 
-gint
-CrossfadeEditor::curve_event (GnomeCanvasItem* item, GdkEvent* event)
-{
-       /* treat it like a toplevel event */
-
-       return canvas_event (item, event);
-}
 
 void
 CrossfadeEditor::xfade_changed (Change ignored)
 {
-       set (xfade.fade_in(), In);
-       set (xfade.fade_out(), Out);
+       set (xfade->fade_in(), In);
+       set (xfade->fade_out(), Out);
 }
 
 void
 CrossfadeEditor::redraw ()
 {
-       if (_canvas->allocation.width < 2) {
+       if (canvas->get_allocation().get_width() < 2) {
                return;
        }
 
-       jack_nframes_t len = xfade.length ();
+       nframes_t len = xfade->length ();
 
        fade[current].normative_curve.clear ();
        fade[current].gain_curve.clear ();
@@ -720,10 +643,18 @@ CrossfadeEditor::redraw ()
        size_t npoints = (size_t) effective_width();
        float vec[npoints];
 
-       fade[current].normative_curve.get_vector (0, 1.0, vec, npoints);
+       fade[current].normative_curve.curve().get_vector (0, 1.0, vec, npoints);
        
-       GnomeCanvasPoints* pts = get_canvas_points ("xfade edit1", npoints);
-       GnomeCanvasPoints* spts = get_canvas_points ("xfade edit2", npoints + 3);
+       ArdourCanvas::Points pts;
+       ArdourCanvas::Points spts;
+
+       while (pts.size() < npoints) {
+               pts.push_back (Gnome::Art::Point (0,0));
+       }
+
+       while (spts.size() < npoints + 3) {
+               spts.push_back (Gnome::Art::Point (0,0));
+       }
 
        /* the shade coordinates *MUST* be in anti-clockwise order.
         */
@@ -732,66 +663,77 @@ CrossfadeEditor::redraw ()
 
                /* lower left */
 
-               spts->coords[0] = canvas_border;
-               spts->coords[1] = effective_height() + canvas_border;
+               spts[0].set_x (canvas_border);
+               spts[0].set_y (effective_height() + canvas_border);
 
                /* lower right */
 
-               spts->coords[2] = effective_width() + canvas_border;
-               spts->coords[3] = effective_height() + canvas_border;
+               spts[1].set_x (effective_width() + canvas_border);
+               spts[1].set_y (effective_height() + canvas_border);
 
                /* upper right */
 
-               spts->coords[4] = effective_width() + canvas_border;
-               spts->coords[5] = canvas_border;
+               spts[2].set_x (effective_width() + canvas_border);
+               spts[2].set_y (canvas_border);
 
                
        } else {
 
                /*  upper left */
                
-               spts->coords[0] = canvas_border;
-               spts->coords[1] = canvas_border;
+               spts[0].set_x (canvas_border);
+               spts[0].set_y (canvas_border);
 
                /* lower left */
 
-               spts->coords[2] = canvas_border;
-               spts->coords[3] = effective_height() + canvas_border;
+               spts[1].set_x (canvas_border);
+               spts[1].set_y (effective_height() + canvas_border);
 
                /* lower right */
 
-               spts->coords[4] = effective_width() + canvas_border;
-               spts->coords[5] = effective_height() + canvas_border;
+               spts[2].set_x (effective_width() + canvas_border);
+               spts[2].set_y (effective_height() + canvas_border);
 
        }
 
-       size_t last_spt = ((npoints + 3) * 2) - 2;
+       size_t last_spt = (npoints + 3) - 1;
 
        for (size_t i = 0; i < npoints; ++i) {
 
                double y = vec[i];
                
-               pts->coords[i*2] = canvas_border + i;
-               pts->coords[(i*2)+1] = y_coordinate (y);
+               pts[i].set_x (canvas_border + i);
+               pts[i].set_y  (y_coordinate (y));
 
-               spts->coords[last_spt - (i*2)] = canvas_border + i;
-               spts->coords[last_spt - (i*2) + 1] = pts->coords[(i*2)+1];
+               spts[last_spt - i].set_x (canvas_border + i);
+               spts[last_spt - i].set_y (pts[i].get_y());
        }
 
-       gnome_canvas_item_set (fade[current].line, "points", pts, NULL);
-       gnome_canvas_item_set (fade[current].shading, "points", spts, NULL);
-
-       gnome_canvas_points_unref (pts);
-       gnome_canvas_points_unref (spts);
+       fade[current].line->property_points() = pts;
+       fade[current].shading->property_points() = spts;
 
-       for (vector<GnomeCanvasItem*>::iterator i = fade[current].waves.begin(); i != fade[current].waves.end(); ++i) {
-               gnome_canvas_item_set ((*i), "gain_src", &fade[current].gain_curve, NULL);
+       for (vector<ArdourCanvas::WaveView*>::iterator i = fade[current].waves.begin(); i != fade[current].waves.end(); ++i) {
+               (*i)->property_gain_src() = &fade[current].gain_curve;
        }
 }
 
 void
 CrossfadeEditor::apply_preset (Preset *preset)
 {
+  
+       WhichFade wf =  find(fade_in_presets->begin(), fade_in_presets->end(), preset) != fade_in_presets->end() ? In : Out;
+       
+       if (current != wf) {
+         
+               if (wf == In) {
+                       select_in_button.clicked();
+               } else {
+                       select_out_button.clicked();
+               }
+               
+               curve_select_clicked (wf);
+       }  
+       
        for (list<Point*>::iterator i = fade[current].points.begin(); i != fade[current].points.end(); ++i) {
                delete *i;
        }
@@ -811,19 +753,19 @@ CrossfadeEditor::apply_preset (Preset *preset)
 void
 CrossfadeEditor::apply ()
 {
-       _apply_to (&xfade);
+       _apply_to (xfade);
 }
 
 void
-CrossfadeEditor::_apply_to (Crossfade* xf)
+CrossfadeEditor::_apply_to (boost::shared_ptr<Crossfade> xf)
 {
-       ARDOUR::Curve& in (xf->fade_in());
-       ARDOUR::Curve& out (xf->fade_out());
+       ARDOUR::AutomationList& in (xf->fade_in());
+       ARDOUR::AutomationList& out (xf->fade_out());
 
        /* IN */
 
 
-       ARDOUR::Curve::const_iterator the_end = in.const_end();
+       ARDOUR::AutomationList::const_iterator the_end = in.const_end();
        --the_end;
 
        double firstx = (*in.begin())->when;
@@ -866,12 +808,12 @@ CrossfadeEditor::_apply_to (Crossfade* xf)
 }
 
 void
-CrossfadeEditor::setup (Crossfade* xfade)
+CrossfadeEditor::setup (boost::shared_ptr<Crossfade> xfade)
 {
        _apply_to (xfade);
        xfade->set_active (true);
-       xfade->fade_in().solve ();
-       xfade->fade_out().solve ();
+       xfade->fade_in().curve().solve ();
+       xfade->fade_out().curve().solve ();
 }
 
 void
@@ -889,8 +831,10 @@ CrossfadeEditor::clear ()
 void
 CrossfadeEditor::reset ()
 {
-       set (xfade.fade_in(),  In);
-       set (xfade.fade_out(), Out);
+       set (xfade->fade_in(),  In);
+       set (xfade->fade_out(), Out);
+
+        curve_select_clicked (current);
 }
 
 void
@@ -902,8 +846,8 @@ CrossfadeEditor::build_presets ()
        fade_out_presets = new Presets;
 
        /* FADE OUT */
-
-       p = new Preset (hiin_xpm);
+       // p = new Preset ("hiin.xpm");
+       p = new Preset ("crossfade_in_fast-cut");
        p->push_back (PresetPoint (0, 0));
        p->push_back (PresetPoint (0.0207373, 0.197222));
        p->push_back (PresetPoint (0.0645161, 0.525));
@@ -914,7 +858,8 @@ CrossfadeEditor::build_presets ()
        p->push_back (PresetPoint (1, 1));
        fade_in_presets->push_back (p);
        
-       p = new Preset (loin_xpm);
+       // p = new Preset ("loin.xpm");
+       p = new Preset ("crossfade_in_transition");
        p->push_back (PresetPoint (0, 0));
        p->push_back (PresetPoint (0.389401, 0.0333333));
        p->push_back (PresetPoint (0.629032, 0.0861111));
@@ -924,7 +869,8 @@ CrossfadeEditor::build_presets ()
        p->push_back (PresetPoint (1, 1));
        fade_in_presets->push_back (p);
 
-       p = new Preset (regin_xpm);
+       // p = new Preset ("regin.xpm");
+       p = new Preset ("crossfade_in_constant");
        p->push_back (PresetPoint (0, 0));
        p->push_back (PresetPoint (0.0737327, 0.308333));
        p->push_back (PresetPoint (0.246544, 0.658333));
@@ -934,7 +880,8 @@ CrossfadeEditor::build_presets ()
        p->push_back (PresetPoint (1, 1));
        fade_in_presets->push_back (p);
 
-       p = new Preset (regin2_xpm);
+       // p = new Preset ("regin2.xpm");
+       p = new Preset ("crossfade_in_slow-cut");
        p->push_back (PresetPoint (0, 0));
        p->push_back (PresetPoint (0.304147, 0.0694444));
        p->push_back (PresetPoint (0.529954, 0.152778));
@@ -944,14 +891,25 @@ CrossfadeEditor::build_presets ()
        p->push_back (PresetPoint (1, 1));
        fade_in_presets->push_back (p);
 
-       p = new Preset (linin_xpm);
+       // p = new Preset ("linin.xpm");
+       p = new Preset ("crossfade_in_dipped");
        p->push_back (PresetPoint (0, 0));
        p->push_back (PresetPoint (1, 1));
        fade_in_presets->push_back (p);
 
+       p = new Preset ("crossfade_in_default");
+       p->push_back (PresetPoint (0, 0));
+       p->push_back (PresetPoint (0.1, 0.01));
+       p->push_back (PresetPoint (0.2, 0.03));
+       p->push_back (PresetPoint (0.8, 0.97));
+       p->push_back (PresetPoint (0.9, 0.99));
+       p->push_back (PresetPoint (1, 1));
+       fade_in_presets->push_back (p);
+       
        /* FADE OUT */
 
-       p = new Preset (hiout_xpm);
+       // p = new Preset ("hiout.xpm");
+       p = new Preset ("crossfade_out_fast-cut");
        p->push_back (PresetPoint (0, 1));
        p->push_back (PresetPoint (0.305556, 1));
        p->push_back (PresetPoint (0.548611, 0.991736));
@@ -961,7 +919,8 @@ CrossfadeEditor::build_presets ()
        p->push_back (PresetPoint (1, 0));
        fade_out_presets->push_back (p);
        
-       p = new Preset (regout_xpm);
+       // p = new Preset ("regout.xpm");
+       p = new Preset ("crossfade_out_constant");
        p->push_back (PresetPoint (0, 1));
        p->push_back (PresetPoint (0.228111, 0.988889));
        p->push_back (PresetPoint (0.347926, 0.972222));
@@ -971,7 +930,8 @@ CrossfadeEditor::build_presets ()
        p->push_back (PresetPoint (1, 0));
        fade_out_presets->push_back (p);
 
-       p = new Preset (loout_xpm);
+       // p = new Preset ("loout.xpm");
+       p = new Preset ("crossfade_out_transition");
        p->push_back (PresetPoint (0, 1));
        p->push_back (PresetPoint (0.023041, 0.697222));
        p->push_back (PresetPoint (0.0553,   0.483333));
@@ -981,7 +941,8 @@ CrossfadeEditor::build_presets ()
        p->push_back (PresetPoint (1, 0));
        fade_out_presets->push_back (p);
 
-       p = new Preset (regout2_xpm);
+       // p = new Preset ("regout2.xpm");
+       p = new Preset ("crossfade_out_slow-fade");
        p->push_back (PresetPoint (0, 1));
        p->push_back (PresetPoint (0.080645, 0.730556));
        p->push_back (PresetPoint (0.277778, 0.289256));
@@ -990,8 +951,18 @@ CrossfadeEditor::build_presets ()
        p->push_back (PresetPoint (1, 0));
        fade_out_presets->push_back (p);
 
-       p = new Preset (linout_xpm);
+       // p = new Preset ("linout.xpm");
+       p = new Preset ("crossfade_out_dipped");
+       p->push_back (PresetPoint (0, 1));
+       p->push_back (PresetPoint (1, 0));
+       fade_out_presets->push_back (p);
+       
+       p = new Preset ("crossfade_out_default");
        p->push_back (PresetPoint (0, 1));
+       p->push_back (PresetPoint (0.1, 0.99));
+       p->push_back (PresetPoint (0.2, 0.97));
+       p->push_back (PresetPoint (0.8, 0.03));
+       p->push_back (PresetPoint (0.9, 0.01));
        p->push_back (PresetPoint (1, 0));
        fade_out_presets->push_back (p);
 }
@@ -1000,67 +971,51 @@ void
 CrossfadeEditor::curve_select_clicked (WhichFade wf)
 {
        current = wf;
-
+       
        if (wf == In) {
-
-               for (vector<GnomeCanvasItem*>::iterator i = fade[In].waves.begin(); i != fade[In].waves.end(); ++i) {
-                       gnome_canvas_item_set ((*i), "wave_color", color_map[cSelectedCrossfadeEditorWave], NULL);
+               
+               for (vector<ArdourCanvas::WaveView*>::iterator i = fade[In].waves.begin(); i != fade[In].waves.end(); ++i) {
+                       (*i)->property_wave_color() = ARDOUR_UI::config()->canvasvar_SelectedCrossfadeEditorWave.get();
                }
 
-               for (vector<GnomeCanvasItem*>::iterator i = fade[Out].waves.begin(); i != fade[Out].waves.end(); ++i) {
-                       gnome_canvas_item_set ((*i), "wave_color", color_map[cCrossfadeEditorWave], NULL);
+               for (vector<ArdourCanvas::WaveView*>::iterator i = fade[Out].waves.begin(); i != fade[Out].waves.end(); ++i) {
+                       (*i)->property_wave_color() = ARDOUR_UI::config()->canvasvar_CrossfadeEditorWave.get();
                }
 
-               gnome_canvas_item_set (fade[In].line, "fill_color_rgba", color_map[cSelectedCrossfadeEditorLine], NULL);
-               gnome_canvas_item_set (fade[Out].line, "fill_color_rgba", color_map[cCrossfadeEditorLine], NULL);
-               gnome_canvas_item_hide (fade[Out].shading);
-               gnome_canvas_item_show (fade[In].shading);
+               fade[In].line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedCrossfadeEditorLine.get();
+               fade[Out].line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CrossfadeEditorLine.get();
+               fade[Out].shading->hide();
+               fade[In].shading->show();
 
                for (list<Point*>::iterator i = fade[Out].points.begin(); i != fade[Out].points.end(); ++i) {
-                       gnome_canvas_item_hide ((*i)->box);
+                       (*i)->box->hide();
                }
 
                for (list<Point*>::iterator i = fade[In].points.begin(); i != fade[In].points.end(); ++i) {
-                       gnome_canvas_item_show ((*i)->box);
-               }
-
-               for (vector<Button*>::iterator i = fade_out_buttons.begin(); i != fade_out_buttons.end(); ++i) {
-                       (*i)->set_sensitive (false);
-               }
-
-               for (vector<Button*>::iterator i = fade_in_buttons.begin(); i != fade_in_buttons.end(); ++i) {
-                       (*i)->set_sensitive (true);
+                       (*i)->box->show ();
                }
 
        } else {
 
-               for (vector<GnomeCanvasItem*>::iterator i = fade[In].waves.begin(); i != fade[In].waves.end(); ++i) {
-                       gnome_canvas_item_set ((*i), "wave_color", color_map[cCrossfadeEditorWave], NULL);
+               for (vector<ArdourCanvas::WaveView*>::iterator i = fade[In].waves.begin(); i != fade[In].waves.end(); ++i) {
+                       (*i)->property_wave_color() = ARDOUR_UI::config()->canvasvar_CrossfadeEditorWave.get();
                }
 
-               for (vector<GnomeCanvasItem*>::iterator i = fade[Out].waves.begin(); i != fade[Out].waves.end(); ++i) {
-                       gnome_canvas_item_set ((*i), "wave_color", color_map[cSelectedCrossfadeEditorWave], NULL);
+               for (vector<ArdourCanvas::WaveView*>::iterator i = fade[Out].waves.begin(); i != fade[Out].waves.end(); ++i) {
+                       (*i)->property_wave_color() = ARDOUR_UI::config()->canvasvar_SelectedCrossfadeEditorWave.get();
                }
 
-               gnome_canvas_item_set (fade[Out].line, "fill_color_rgba", color_map[cSelectedCrossfadeEditorLine], NULL);
-               gnome_canvas_item_set (fade[In].line, "fill_color_rgba", color_map[cCrossfadeEditorLine], NULL);
-               gnome_canvas_item_hide (fade[In].shading);
-               gnome_canvas_item_show (fade[Out].shading);
+               fade[Out].line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedCrossfadeEditorLine.get();
+               fade[In].line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CrossfadeEditorLine.get();
+               fade[In].shading->hide();
+               fade[Out].shading->show();
 
                for (list<Point*>::iterator i = fade[In].points.begin(); i != fade[In].points.end(); ++i) {
-                       gnome_canvas_item_hide ((*i)->box);
+                       (*i)->box->hide();
                }
                
                for (list<Point*>::iterator i = fade[Out].points.begin(); i != fade[Out].points.end(); ++i) {
-                       gnome_canvas_item_show ((*i)->box);
-               }
-
-               for (vector<Button*>::iterator i = fade_out_buttons.begin(); i != fade_out_buttons.end(); ++i) {
-                       (*i)->set_sensitive (true);
-               }
-
-               for (vector<Button*>::iterator i = fade_in_buttons.begin(); i != fade_in_buttons.end(); ++i) {
-                       (*i)->set_sensitive (false);
+                       (*i)->box->show();
                }
 
        }
@@ -1081,80 +1036,78 @@ CrossfadeEditor::y_coordinate (double& yfract) const
        yfract = min (1.0, yfract);
        yfract = max (0.0, yfract);
 
-       return (_canvas->allocation.height - (canvas_border)) - (yfract * effective_height());
+       return (canvas->get_allocation().get_height() - (canvas_border)) - (yfract * effective_height());
 }
 
 void
-CrossfadeEditor::make_waves (AudioRegion& region, WhichFade which)
+CrossfadeEditor::make_waves (boost::shared_ptr<AudioRegion> region, WhichFade which)
 {
        gdouble ht;
-       uint32_t nchans = region.n_channels();
+       uint32_t nchans = region->n_channels();
        guint32 color;
        double spu;
 
        if (which == In) {
-               color = color_map[cSelectedCrossfadeEditorWave];
+               color = ARDOUR_UI::config()->canvasvar_SelectedCrossfadeEditorWave.get();
        } else {
-               color = color_map[cCrossfadeEditorWave];
+               color = ARDOUR_UI::config()->canvasvar_CrossfadeEditorWave.get();
        }
 
-       ht = _canvas->allocation.height / (double) nchans;
-       spu = xfade.length() / (double) effective_width();
+       ht = canvas->get_allocation().get_height() / (double) nchans;
+       spu = xfade->length() / (double) effective_width();
 
        for (uint32_t n = 0; n < nchans; ++n) {
                
                gdouble yoff = n * ht;
                
-               if (region.source(n).peaks_ready (bind (mem_fun(*this, &CrossfadeEditor::peaks_ready), &region, which))) {
+               if (region->audio_source(n)->peaks_ready (bind (mem_fun(*this, &CrossfadeEditor::peaks_ready), region, which), peaks_ready_connection)) {
+                       WaveView* waveview = new WaveView (*(canvas->root()));
+
+                       waveview->property_data_src() = region.get();
+                       waveview->property_cache_updater() =  true;
+                       waveview->property_cache() = WaveView::create_cache();
+                       waveview->property_channel() = n;
+                       waveview->property_length_function() = (void*) region_length_from_c;
+                       waveview->property_sourcefile_length_function() = (void*) sourcefile_length_from_c;
+                       waveview->property_peak_function() = (void*) region_read_peaks_from_c;
+                       waveview->property_gain_function() = (void*) curve_get_vector_from_c;
+                       waveview->property_gain_src() = &fade[which].gain_curve;
+                       waveview->property_x() = canvas_border;
+                       waveview->property_y() = yoff;
+                       waveview->property_height() = ht;
+                       waveview->property_samples_per_unit() = spu;
+                       waveview->property_amplitude_above_axis() = 2.0;
+                       waveview->property_wave_color() = color;
                        
-                       GnomeCanvasItem *wave = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS(_canvas)),
-                                                                  gnome_canvas_waveview_get_type (),
-                                                                  "data_src", (gpointer) &region,
-                                                                  "cache_updater", (gboolean) TRUE,
-                                                                  "cache", gnome_canvas_waveview_cache_new (),
-                                                                  "channel", (guint32) n,
-                                                                  "length_function", (gpointer) region_length_from_c,
-                                                                  "sourcefile_length_function", (gpointer) sourcefile_length_from_c,
-                                                                  "peak_function", (gpointer) region_read_peaks_from_c,
-                                                                  "gain_function", (gpointer) curve_get_vector_from_c,
-                                                                  "gain_src", &fade[which].gain_curve,
-                                                                  "x", (double) canvas_border,
-                                                                  "y", yoff,
-                                                                  "height", ht,
-                                                                  "samples_per_unit", spu,
-                                                                  "amplitude_above_axis", 2.0,
-                                                                  "wave_color", color,
-                                                                  NULL);
-                       
-                       gnome_canvas_item_lower_to_bottom (wave);
-                       fade[which].waves.push_back (wave);
+                       waveview->lower_to_bottom();
+                       fade[which].waves.push_back (waveview);
                }
        }
 
-       gnome_canvas_item_lower_to_bottom (toplevel);
+       toplevel->lower_to_bottom();
 }
 
 void
-CrossfadeEditor::peaks_ready (AudioRegion* r, WhichFade which)
+CrossfadeEditor::peaks_ready (boost::shared_ptr<AudioRegion> r, WhichFade which)
 {
        /* this should never be called, because the peak files for an xfade
           will be ready by the time we want them. but our API forces us
           to provide this, so ..
        */
-
-       make_waves (*r, which);
+       peaks_ready_connection.disconnect ();
+       make_waves (r, which);
 }
 
 void
 CrossfadeEditor::audition_both ()
 {
-       AudioPlaylist& pl (session.the_auditioner().prepare_playlist());
-       jack_nframes_t preroll;
-       jack_nframes_t postroll;
-       jack_nframes_t length;
-       jack_nframes_t left_start_offset;
-       jack_nframes_t right_length;
-       jack_nframes_t left_length;
+       AudioPlaylist& pl (session.the_auditioner()->prepare_playlist());
+       nframes_t preroll;
+       nframes_t postroll;
+       nframes_t length;
+       nframes_t left_start_offset;
+       nframes_t right_length;
+       nframes_t left_length;
 
        if (preroll_button.get_active()) {
                preroll = ARDOUR_UI::instance()->preroll_clock.current_duration ();
@@ -1168,29 +1121,29 @@ CrossfadeEditor::audition_both ()
                postroll = 0;
        }
 
-       if ((left_start_offset = xfade.out().length() - xfade.length()) >= preroll) {
+       if ((left_start_offset = xfade->out()->length() - xfade->length()) >= preroll) {
                left_start_offset -= preroll;
        } 
 
        length = 0;
 
-       if ((left_length = xfade.length()) < xfade.out().length() - left_start_offset) {
+       if ((left_length = xfade->length()) < xfade->out()->length() - left_start_offset) {
                length += postroll;
        }
 
-       right_length = xfade.length();
+       right_length = xfade->length();
 
-       if (xfade.in().length() - right_length < postroll) {
+       if (xfade->in()->length() - right_length < postroll) {
                right_length += postroll;
        }
 
-       AudioRegion* left = new AudioRegion (xfade.out(), left_start_offset, left_length, "xfade out", 
-                                            0, Region::DefaultFlags, false);
-       AudioRegion* right = new AudioRegion (xfade.in(), 0, right_length, "xfade in", 
-                                             0, Region::DefaultFlags, false);
+       boost::shared_ptr<AudioRegion> left (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (xfade->out(), left_start_offset, left_length, "xfade out", 
+                                                                                                             0, Region::DefaultFlags, false)));
+       boost::shared_ptr<AudioRegion> right (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (xfade->in(), 0, right_length, "xfade in", 
+                                                                                                              0, Region::DefaultFlags, false)));
        
-       pl.add_region (*left, 0);
-       pl.add_region (*right, 1+preroll);
+       pl.add_region (left, 0);
+       pl.add_region (right, 1+preroll);
 
        /* there is only one ... */
 
@@ -1202,24 +1155,24 @@ CrossfadeEditor::audition_both ()
 void
 CrossfadeEditor::audition_left_dry ()
 {
-       AudioRegion* left = new AudioRegion (xfade.out(), xfade.out().length() - xfade.length(), xfade.length(), "xfade left", 
-                                            0, Region::DefaultFlags, false);
+       boost::shared_ptr<AudioRegion> left (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (xfade->out(), xfade->out()->length() - xfade->length(), xfade->length(), "xfade left", 
+                                                                                                             0, Region::DefaultFlags, false)));
        
-       session.audition_region (*left);
+       session.audition_region (left);
 }
 
 void
 CrossfadeEditor::audition_left ()
 {
-       AudioPlaylist& pl (session.the_auditioner().prepare_playlist());
+       AudioPlaylist& pl (session.the_auditioner()->prepare_playlist());
 
-       AudioRegion* left = new AudioRegion (xfade.out(), xfade.out().length() - xfade.length(), xfade.length(), "xfade left", 
-                                            0, Region::DefaultFlags, false);
-       AudioRegion* right = new AudioRegion (xfade.in(), 0, xfade.length(), "xfade in", 
-                                             0, Region::DefaultFlags, false);
+       boost::shared_ptr<AudioRegion> left (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (xfade->out(), xfade->out()->length() - xfade->length(), xfade->length(), "xfade left", 
+                                                                                                             0, Region::DefaultFlags, false)));
+       boost::shared_ptr<AudioRegion> right (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (xfade->in(), 0, xfade->length(), "xfade in", 
+                                                                                                              0, Region::DefaultFlags, false)));
 
-       pl.add_region (*left, 0);
-       pl.add_region (*right, 1);
+       pl.add_region (left, 0);
+       pl.add_region (right, 1);
 
        right->set_muted (true);
 
@@ -1235,23 +1188,23 @@ CrossfadeEditor::audition_left ()
 void
 CrossfadeEditor::audition_right_dry ()
 {
-       AudioRegion* right = new AudioRegion (xfade.in(), 0, xfade.length(), "xfade in", 
-                                             0, Region::DefaultFlags, false);
-       session.audition_region (*right);
+       boost::shared_ptr<AudioRegion> right (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (xfade->in(), 0, xfade->length(), "xfade in", 
+                                                                                                              0, Region::DefaultFlags, false)));
+       session.audition_region (right);
 }
 
 void
 CrossfadeEditor::audition_right ()
 {
-       AudioPlaylist& pl (session.the_auditioner().prepare_playlist());
+       AudioPlaylist& pl (session.the_auditioner()->prepare_playlist());
 
-       AudioRegion* left = new AudioRegion (xfade.out(), xfade.out().length() - xfade.length(), xfade.length(), "xfade out", 
-                                            0, Region::DefaultFlags, false);
-       AudioRegion* right = new AudioRegion (xfade.out(), 0, xfade.length(), "xfade out", 
-                                             0, Region::DefaultFlags, false);
+       boost::shared_ptr<AudioRegion> left (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (xfade->out(), xfade->out()->length() - xfade->length(), xfade->length(), "xfade out", 
+                                                                                                             0, Region::DefaultFlags, false)));
+                                            boost::shared_ptr<AudioRegion> right (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (xfade->out(), 0, xfade->length(), "xfade out", 
+                                                                                                              0, Region::DefaultFlags, false)));
 
-       pl.add_region (*left, 0);
-       pl.add_region (*right, 1);
+       pl.add_region (left, 0);
+       pl.add_region (right, 1);
        
        left->set_muted (true);