change all frame_to_pixel and pixel_to_frame to sample_to_pixel and pixel_to_sample
[ardour.git] / gtk2_ardour / audio_region_view.cc
index f675bf9eed0fa15d1c6db6d9cc8a2f79867a386b..4926d48d13d376376c09fdab4efe37c6838c9060 100644 (file)
@@ -1,7 +1,7 @@
 /*
-    Copyright (C) 2001-2006 Paul Davis 
+    Copyright (C) 2001-2006 Paul Davis
 
-    This program is free software; you can redistribute it and/or modify
+    This program is free software; you can r>edistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
 #include <cassert>
 #include <algorithm>
 
+#include <boost/scoped_array.hpp>
+
 #include <gtkmm.h>
 
 #include <gtkmm2ext/gtk_ui.h>
 
-#include <ardour/playlist.h>
-#include <ardour/audioregion.h>
-#include <ardour/audiosource.h>
-#include <ardour/audio_diskstream.h>
-#include <pbd/memento_command.h>
+#include "ardour/playlist.h"
+#include "ardour/audioregion.h"
+#include "ardour/audiosource.h"
+#include "ardour/profile.h"
+#include "ardour/session.h"
+
+#include "pbd/memento_command.h"
+#include "pbd/stacktrace.h"
+
+#include "evoral/Curve.hpp"
+
+#include "canvas/rectangle.h"
+#include "canvas/polygon.h"
+#include "canvas/poly_line.h"
+#include "canvas/line.h"
+#include "canvas/pixbuf.h"
 
 #include "streamview.h"
 #include "audio_region_view.h"
 #include "audio_time_axis.h"
-#include "simplerect.h"
-#include "simpleline.h"
-#include "waveview.h"
 #include "public_editor.h"
 #include "audio_region_editor.h"
+#include "audio_streamview.h"
 #include "region_gain_line.h"
+#include "control_point.h"
 #include "ghostregion.h"
 #include "audio_time_axis.h"
 #include "utils.h"
 #include "rgb_macros.h"
 #include "gui_thread.h"
+#include "ardour_ui.h"
 
 #include "i18n.h"
 
-using namespace sigc;
+#define MUTED_ALPHA 10
+
+using namespace std;
 using namespace ARDOUR;
 using namespace PBD;
 using namespace Editing;
 using namespace ArdourCanvas;
 
 static const int32_t sync_mark_width = 9;
+static double const handle_size = 6; /* height of fade handles */
 
-AudioRegionView::AudioRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, AudioRegion& r, double spu,
-                                 Gdk::Color& basic_color)
+AudioRegionView::AudioRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<AudioRegion> r, double spu,
+                                 Gdk::Color const & basic_color)
        : RegionView (parent, tv, r, spu, basic_color)
        , sync_mark(0)
-       , zero_line(0)
        , fade_in_shape(0)
        , fade_out_shape(0)
        , fade_in_handle(0)
        , fade_out_handle(0)
-       , gain_line(0)
+       , start_xfade_in (0)
+       , start_xfade_out (0)
+       , start_xfade_rect (0)
+       , _start_xfade_visible (false)
+       , end_xfade_in (0)
+       , end_xfade_out (0)
+       , end_xfade_rect (0)
+       , _end_xfade_visible (false)
        , _amplitude_above_axis(1.0)
-       , _flags(0)
        , fade_color(0)
 {
+       Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&AudioRegionView::parameter_changed, this, _1), gui_context());
 }
 
-AudioRegionView::AudioRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, AudioRegion& r, double spu, 
-                                 Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
-       : RegionView (parent, tv, r, spu, basic_color, visibility)
+AudioRegionView::AudioRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<AudioRegion> r, double spu,
+                                 Gdk::Color const & basic_color, bool recording, TimeAxisViewItem::Visibility visibility)
+       : RegionView (parent, tv, r, spu, basic_color, recording, visibility)
        , sync_mark(0)
-       , zero_line(0)
        , fade_in_shape(0)
        , fade_out_shape(0)
        , fade_in_handle(0)
        , fade_out_handle(0)
-       , gain_line(0)
+       , start_xfade_in (0)
+       , start_xfade_out (0)
+       , start_xfade_rect (0)
+       , _start_xfade_visible (false)
+       , end_xfade_in (0)
+       , end_xfade_out (0)
+       , end_xfade_rect (0)
+       , _end_xfade_visible (false)
        , _amplitude_above_axis(1.0)
-       , _flags(0)
        , fade_color(0)
 {
+       Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&AudioRegionView::parameter_changed, this, _1), gui_context());
+}
+
+AudioRegionView::AudioRegionView (const AudioRegionView& other, boost::shared_ptr<AudioRegion> other_region)
+       : RegionView (other, boost::shared_ptr<Region> (other_region))
+       , fade_in_shape(0)
+       , fade_out_shape(0)
+       , fade_in_handle(0)
+       , fade_out_handle(0)
+       , start_xfade_in (0)
+       , start_xfade_out (0)
+       , start_xfade_rect (0)
+       , _start_xfade_visible (false)
+       , end_xfade_in (0)
+       , end_xfade_out (0)
+       , end_xfade_rect (0)
+       , _end_xfade_visible (false)
+       , _amplitude_above_axis (other._amplitude_above_axis)
+       , fade_color(0)
+{
+       Gdk::Color c;
+       int r,g,b,a;
+
+       UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
+       c.set_rgb_p (r/255.0, g/255.0, b/255.0);
+
+       init (c, true);
+
+       Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&AudioRegionView::parameter_changed, this, _1), gui_context());
 }
 
 void
-AudioRegionView::init (Gdk::Color& basic_color, bool wfd)
+AudioRegionView::init (Gdk::Color const & basic_color, bool wfd)
 {
        // FIXME: Some redundancy here with RegionView::init.  Need to figure out
        // where order is important and where it isn't...
-       
-       RegionView::init(basic_color, wfd);
 
-       XMLNode *node;
+       RegionView::init (basic_color, wfd);
 
        _amplitude_above_axis = 1.0;
-       zero_line             = 0;
-       _flags                = 0;
-
-       if ((node = _region.extra_xml ("GUI")) != 0) {
-               set_flags (node);
-       } else {
-               _flags = WaveformVisible;
-               store_flags ();
-       }
-
-       if (trackview.editor.new_regionviews_display_gain()) {
-               _flags |= EnvelopeVisible;
-       }
 
        compute_colors (basic_color);
 
        create_waves ();
 
-       fade_in_shape = new ArdourCanvas::Polygon (*group);
-       fade_in_shape->property_fill_color_rgba() = fade_color;
+       fade_in_shape = new ArdourCanvas::Polygon (group);
+       fade_in_shape->set_fill_color (fade_color);
        fade_in_shape->set_data ("regionview", this);
-       
-       fade_out_shape = new ArdourCanvas::Polygon (*group);
-       fade_out_shape->property_fill_color_rgba() = fade_color;
-       fade_out_shape->set_data ("regionview", this);
 
+       fade_out_shape = new ArdourCanvas::Polygon (group);
+       fade_out_shape->set_fill_color (fade_color);
+       fade_out_shape->set_data ("regionview", this);
 
-       {
-               uint32_t r,g,b,a;
-               UINT_TO_RGBA(fill_color,&r,&g,&b,&a);
-       
+       if (!_recregion) {
+               fade_in_handle = new ArdourCanvas::Rectangle (group);
+               fade_in_handle->set_fill_color (UINT_RGBA_CHANGE_A (fill_color, 0));
+               fade_in_handle->set_outline_color (RGBA_TO_UINT (0, 0, 0, 0));
 
-               fade_in_handle = new ArdourCanvas::SimpleRect (*group);
-               fade_in_handle->property_fill_color_rgba() = RGBA_TO_UINT(r,g,b,0);
-               fade_in_handle->property_outline_pixels() = 0;
-               fade_in_handle->property_y1() = 2.0;
-               fade_in_handle->property_y2() = 7.0;
-               
                fade_in_handle->set_data ("regionview", this);
-               
-               fade_out_handle = new ArdourCanvas::SimpleRect (*group);
-               fade_out_handle->property_fill_color_rgba() = RGBA_TO_UINT(r,g,b,0);
-               fade_out_handle->property_outline_pixels() = 0;
-               fade_out_handle->property_y1() = 2.0;
-               fade_out_handle->property_y2() = 7.0;
-               
+
+               fade_out_handle = new ArdourCanvas::Rectangle (group);
+               fade_out_handle->set_fill_color (UINT_RGBA_CHANGE_A (fill_color, 0));
+               fade_out_handle->set_outline_color (RGBA_TO_UINT (0, 0, 0, 0));
+
                fade_out_handle->set_data ("regionview", this);
        }
 
-       string foo = _region.name();
-       foo += ':';
-       foo += "gain";
-
-       gain_line = new AudioRegionGainLine (foo, trackview.session(), *this, *group, audio_region().envelope());
+       setup_fade_handle_positions ();
 
-       if (!(_flags & EnvelopeVisible)) {
-               gain_line->hide ();
-       } else {
-               gain_line->show ();
+       if (!trackview.session()->config.get_show_region_fades()) {
+               set_fade_visibility (false);
        }
 
-       reset_width_dependent_items ((double) _region.length() / samples_per_unit);
+       const string line_name = _region->name() + ":gain";
 
+       if (!Profile->get_sae()) {
+               gain_line.reset (new AudioRegionGainLine (line_name, *this, *group, audio_region()->envelope()));
+       }
+       
+       update_envelope_visibility ();
        gain_line->reset ();
 
-       set_height (trackview.height);
+       set_height (trackview.current_height());
 
        region_muted ();
        region_sync_changed ();
-       region_resized (BoundsChanged);
-       set_waveview_data_src();
+
+       region_resized (ARDOUR::bounds_change);
+
+       for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
+               (*i)->set_duration (_region->length() / frames_per_pixel);
+       }
+
        region_locked ();
        envelope_active_changed ();
        fade_in_active_changed ();
        fade_out_active_changed ();
 
-       _region.StateChanged.connect (mem_fun(*this, &AudioRegionView::region_changed));
+       reset_width_dependent_items (_pixel_width);
+
+       fade_in_shape->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_fade_in_event), fade_in_shape, this));
+       if (fade_in_handle) {
+               fade_in_handle->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_fade_in_handle_event), fade_in_handle, this));
+       }
+
+       fade_out_shape->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_fade_out_event), fade_out_shape, this));
 
-       fade_in_shape->signal_event().connect (bind (mem_fun (PublicEditor::instance(), &PublicEditor::canvas_fade_in_event), fade_in_shape, this));
-       fade_in_handle->signal_event().connect (bind (mem_fun (PublicEditor::instance(), &PublicEditor::canvas_fade_in_handle_event), fade_in_handle, this));
-       fade_out_shape->signal_event().connect (bind (mem_fun (PublicEditor::instance(), &PublicEditor::canvas_fade_out_event), fade_out_shape, this));
-       fade_out_handle->signal_event().connect (bind (mem_fun (PublicEditor::instance(), &PublicEditor::canvas_fade_out_handle_event), fade_out_handle, this));
+       if (fade_out_handle) {
+               fade_out_handle->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_fade_out_handle_event), fade_out_handle, this));
+       }
 
        set_colors ();
 
+       setup_waveform_visibility ();
+       setup_waveform_shape ();
+       setup_waveform_scale ();
+
        /* XXX sync mark drag? */
 }
 
@@ -192,49 +238,52 @@ AudioRegionView::~AudioRegionView ()
 
        RegionViewGoingAway (this); /* EMIT_SIGNAL */
 
-       for (vector<GnomeCanvasWaveViewCache *>::iterator cache = wave_caches.begin(); cache != wave_caches.end() ; ++cache) {
-               gnome_canvas_waveview_cache_destroy (*cache);
+       for (vector<ScopedConnection*>::iterator i = _data_ready_connections.begin(); i != _data_ready_connections.end(); ++i) {
+               delete *i;
        }
 
-       /* all waveviews etc will be destroyed when the group is destroyed */
-
-       if (gain_line) {
-               delete gain_line;
+       for (list<std::pair<framepos_t, ArdourCanvas::Line*> >::iterator i = feature_lines.begin(); i != feature_lines.end(); ++i) {
+               delete ((*i).second);
        }
+
+       /* all waveviews etc will be destroyed when the group is destroyed */
 }
 
-ARDOUR::AudioRegion&
+boost::shared_ptr<ARDOUR::AudioRegion>
 AudioRegionView::audio_region() const
 {
        // "Guaranteed" to succeed...
-       return dynamic_cast<AudioRegion&>(_region);
+       return boost::dynamic_pointer_cast<AudioRegion>(_region);
 }
 
 void
-AudioRegionView::region_changed (Change what_changed)
+AudioRegionView::region_changed (const PropertyChange& what_changed)
 {
-       ENSURE_GUI_THREAD (bind (mem_fun(*this, &AudioRegionView::region_changed), what_changed));
+       ENSURE_GUI_THREAD (*this, &AudioRegionView::region_changed, what_changed);
 
-       RegionView::region_changed(what_changed);
+       RegionView::region_changed (what_changed);
 
-       if (what_changed & AudioRegion::ScaleAmplitudeChanged) {
+       if (what_changed.contains (ARDOUR::Properties::scale_amplitude)) {
                region_scale_amplitude_changed ();
        }
-       if (what_changed & AudioRegion::FadeInChanged) {
+       if (what_changed.contains (ARDOUR::Properties::fade_in)) {
                fade_in_changed ();
        }
-       if (what_changed & AudioRegion::FadeOutChanged) {
+       if (what_changed.contains (ARDOUR::Properties::fade_out)) {
                fade_out_changed ();
        }
-       if (what_changed & AudioRegion::FadeInActiveChanged) {
+       if (what_changed.contains (ARDOUR::Properties::fade_in_active)) {
                fade_in_active_changed ();
        }
-       if (what_changed & AudioRegion::FadeOutActiveChanged) {
+       if (what_changed.contains (ARDOUR::Properties::fade_out_active)) {
                fade_out_active_changed ();
        }
-       if (what_changed & AudioRegion::EnvelopeActiveChanged) {
+       if (what_changed.contains (ARDOUR::Properties::envelope_active)) {
                envelope_active_changed ();
        }
+       if (what_changed.contains (ARDOUR::Properties::valid_transients)) {
+               transients_changed ();
+       }
 }
 
 void
@@ -249,55 +298,31 @@ AudioRegionView::fade_out_changed ()
        reset_fade_out_shape ();
 }
 
-void
-AudioRegionView::set_fade_in_active (bool yn)
-{
-       audio_region().set_fade_in_active (yn);
-}
-
-void
-AudioRegionView::set_fade_out_active (bool yn)
-{
-       audio_region().set_fade_out_active (yn);
-}
-
 void
 AudioRegionView::fade_in_active_changed ()
 {
-       uint32_t r,g,b,a;
-       uint32_t col;
-       UINT_TO_RGBA(fade_color,&r,&g,&b,&a);
-
-       if (audio_region().fade_in_active()) {
-               col = RGBA_TO_UINT(r,g,b,120);
-               fade_in_shape->property_fill_color_rgba() = col;
-               fade_in_shape->property_width_pixels() = 0;
-               fade_in_shape->property_outline_color_rgba() = RGBA_TO_UINT(r,g,b,0);
-       } else { 
-               col = RGBA_TO_UINT(r,g,b,0);
-               fade_in_shape->property_fill_color_rgba() = col;
-               fade_in_shape->property_width_pixels() = 1;
-               fade_in_shape->property_outline_color_rgba() = RGBA_TO_UINT(r,g,b,255);
+       if (audio_region()->fade_in_active()) {
+               /* XXX: make a themable colour */
+               fade_in_shape->set_fill_color (RGBA_TO_UINT (45, 45, 45, 90));
+               fade_in_shape->set_outline_width (1);
+       } else {
+               /* XXX: make a themable colour */
+               fade_in_shape->set_fill_color (RGBA_TO_UINT (45, 45, 45, 20));
+               fade_in_shape->set_outline_width (1);
        }
 }
 
 void
 AudioRegionView::fade_out_active_changed ()
 {
-       uint32_t r,g,b,a;
-       uint32_t col;
-       UINT_TO_RGBA(fade_color,&r,&g,&b,&a);
-
-       if (audio_region().fade_out_active()) {
-               col = RGBA_TO_UINT(r,g,b,120);
-               fade_out_shape->property_fill_color_rgba() = col;
-               fade_out_shape->property_width_pixels() = 0;
-               fade_out_shape->property_outline_color_rgba() = RGBA_TO_UINT(r,g,b,0);
-       } else { 
-               col = RGBA_TO_UINT(r,g,b,0);
-               fade_out_shape->property_fill_color_rgba() = col;
-               fade_out_shape->property_width_pixels() = 1;
-               fade_out_shape->property_outline_color_rgba() = RGBA_TO_UINT(r,g,b,255);
+       if (audio_region()->fade_out_active()) {
+               /* XXX: make a themable colour */
+               fade_out_shape->set_fill_color (RGBA_TO_UINT (45, 45, 45, 90));
+               fade_out_shape->set_outline_width (1);
+       } else {
+               /* XXX: make a themable colour */
+               fade_out_shape->set_fill_color (RGBA_TO_UINT (45, 45, 45, 20));
+               fade_out_shape->set_outline_width (1);
        }
 }
 
@@ -305,35 +330,23 @@ AudioRegionView::fade_out_active_changed ()
 void
 AudioRegionView::region_scale_amplitude_changed ()
 {
-       ENSURE_GUI_THREAD (mem_fun(*this, &AudioRegionView::region_scale_amplitude_changed));
+       ENSURE_GUI_THREAD (*this, &AudioRegionView::region_scale_amplitude_changed)
 
        for (uint32_t n = 0; n < waves.size(); ++n) {
-               // force a reload of the cache
-               waves[n]->property_data_src() = &_region;
+               waves[n]->rebuild ();
        }
 }
 
 void
 AudioRegionView::region_renamed ()
 {
-       // FIXME: ugly duplication with RegionView...
-       
-       string str;
-
-       if (_region.locked()) {
-               str += '>';
-               str += _region.name();
-               str += '<';
-       } else {
-               str = _region.name();
-       }
+       std::string str = RegionView::make_name ();
 
-       // ... because of this
-       if (audio_region().speed_mismatch (trackview.session().frame_rate())) {
+       if (audio_region()->speed_mismatch (trackview.session()->frame_rate())) {
                str = string ("*") + str;
        }
 
-       if (_region.muted()) {
+       if (_region->muted()) {
                str = string ("!") + str;
        }
 
@@ -342,22 +355,44 @@ AudioRegionView::region_renamed ()
 }
 
 void
-AudioRegionView::region_resized (Change what_changed)
+AudioRegionView::region_resized (const PropertyChange& what_changed)
 {
+       AudioGhostRegion* agr;
+
        RegionView::region_resized(what_changed);
+       PropertyChange interesting_stuff;
 
-       if (what_changed & Change (StartChanged|LengthChanged)) {
+       interesting_stuff.add (ARDOUR::Properties::start);
+       interesting_stuff.add (ARDOUR::Properties::length);
 
-               for (uint32_t n = 0; n < waves.size(); ++n) {
-                       waves[n]->property_region_start() = _region.start();
+       if (what_changed.contains (interesting_stuff)) {
+
+               for (uint32_t n = 0; n < waves.size(); ++n) {
+                       waves[n]->region_resized ();
+                       waves[n]->set_region_start (region()->start ());
                }
-               
-               for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 
-                       for (vector<WaveView*>::iterator w = (*i)->waves.begin(); w != (*i)->waves.end(); ++w) {
-                               (*w)->property_region_start() = _region.start();
-                       }
-               }
+               for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
+                       if ((agr = dynamic_cast<AudioGhostRegion*>(*i)) != 0) {
+
+                               for (vector<WaveView*>::iterator w = agr->waves.begin(); w != agr->waves.end(); ++w) {
+                                       (*w)->region_resized ();
+                                       (*w)->set_region_start (region()->start ());
+                               }
+                       }
+               }
+
+               /* hide transient lines that extend beyond the region end */
+
+               list<std::pair<framepos_t, ArdourCanvas::Line*> >::iterator l;
+
+               for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
+                       if (l->first > _region->length() - 1) {
+                               l->second->hide();
+                       } else {
+                               l->second->show();
+                       }
+               }
        }
 }
 
@@ -367,23 +402,33 @@ AudioRegionView::reset_width_dependent_items (double pixel_width)
        RegionView::reset_width_dependent_items(pixel_width);
        assert(_pixel_width == pixel_width);
 
-       if (zero_line) {
-               zero_line->property_x2() = pixel_width - 1.0;
-       }
-
        if (fade_in_handle) {
-               if (pixel_width <= 6.0) {
+               if (pixel_width <= 6.0 || _height < 5.0 || !trackview.session()->config.get_show_region_fades()) {
                        fade_in_handle->hide();
                        fade_out_handle->hide();
-               } else {
-                       if (_height < 5.0) {
-                               fade_in_handle->hide();
-                               fade_out_handle->hide();
-                       } else {
-                               fade_in_handle->show();
-                               fade_out_handle->show();
-                       }
                }
+               else {
+                       fade_in_handle->show();
+                       fade_out_handle->show();
+               }
+       }
+
+       AnalysisFeatureList analysis_features = _region->transients();
+       AnalysisFeatureList::const_iterator i;
+
+       list<std::pair<framepos_t, ArdourCanvas::Line*> >::iterator l;
+
+       for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
+
+               float x_pos = trackview.editor().sample_to_pixel (*i);
+
+               (*l).second->set (ArdourCanvas::Duple (x_pos, 2.0),
+                                 ArdourCanvas::Duple (x_pos, _height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 1));
+
+               (*l).first = *i;
+
+               (*l).second->set (ArdourCanvas::Duple (x_pos, 2.0),
+                                 ArdourCanvas::Duple (x_pos, _height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 1));
        }
 
        reset_fade_shapes ();
@@ -395,69 +440,79 @@ AudioRegionView::region_muted ()
        RegionView::region_muted();
 
        for (uint32_t n=0; n < waves.size(); ++n) {
-               if (_region.muted()) {
-                       waves[n]->property_wave_color() = color_map[cMutedWaveForm];
+               if (_region->muted()) {
+                       waves[n]->set_outline_color (UINT_RGBA_CHANGE_A(ARDOUR_UI::config()->canvasvar_WaveForm.get(), MUTED_ALPHA));
                } else {
-                       waves[n]->property_wave_color() = color_map[cWaveForm];
+                       waves[n]->set_outline_color (ARDOUR_UI::config()->canvasvar_WaveForm.get());
                }
        }
 }
 
+void
+AudioRegionView::setup_fade_handle_positions()
+{
+       /* position of fade handle offset from the top of the region view */
+       double const handle_pos = 2;
+
+       if (fade_in_handle) {
+               fade_in_handle->set_y0 (handle_pos);
+               fade_in_handle->set_y1 (handle_pos + handle_size);
+       }
+
+       if (fade_out_handle) {
+               fade_out_handle->set_y0 (handle_pos);
+               fade_out_handle->set_y1 (handle_pos + handle_size);
+       }
+}
+
 void
 AudioRegionView::set_height (gdouble height)
 {
-       RegionView::set_height(height);
-       
+       RegionView::set_height (height);
+
        uint32_t wcnt = waves.size();
 
-       for (uint32_t n=0; n < wcnt; ++n) {
+       for (uint32_t n = 0; n < wcnt; ++n) {
                gdouble ht;
 
-               if ((height) <= NAME_HIGHLIGHT_THRESH) {
-                       ht = ((height-2*wcnt) / (double) wcnt);
+               if (height < NAME_HIGHLIGHT_THRESH) {
+                       ht = ((height - 2 * wcnt) / (double) wcnt);
                } else {
-                       ht = (((height-2*wcnt) - NAME_HIGHLIGHT_SIZE) / (double) wcnt);
+                       ht = (((height - 2 * wcnt) - NAME_HIGHLIGHT_SIZE) / (double) wcnt);
                }
-               
-               gdouble yoff = n * (ht+1);
-               
-               waves[n]->property_height() = ht;
-               waves[n]->property_y() = yoff + 2;
+
+               gdouble yoff = n * (ht + 1);
+
+               waves[n]->set_height (ht);
+               waves[n]->set_y_position (yoff + 2);
        }
 
        if (gain_line) {
-               if ((height/wcnt) < NAME_HIGHLIGHT_SIZE) {
+
+               if ((height/wcnt) < NAME_HIGHLIGHT_THRESH) {
                        gain_line->hide ();
                } else {
-                       if (_flags & EnvelopeVisible) {
-                               gain_line->show ();
-                       }
+                       update_envelope_visibility ();
                }
-               gain_line->set_height ((uint32_t) rint (height - NAME_HIGHLIGHT_SIZE));
+
+               gain_line->set_height ((uint32_t) rint (height - NAME_HIGHLIGHT_SIZE) - 2);
        }
 
-       manage_zero_line ();
        reset_fade_shapes ();
-       
-       if (name_text) {
-               name_text->raise_to_top();
-       }
-}
 
-void
-AudioRegionView::manage_zero_line ()
-{
-       if (!zero_line) {
-               return;
+       /* Update hights for any active feature lines */
+       list<std::pair<framepos_t, ArdourCanvas::Line*> >::iterator l;
+
+       for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
+
+               float pos_x = trackview.editor().sample_to_pixel((*l).first);
+
+               (*l).second->set (ArdourCanvas::Duple (pos_x, 2.0),
+                                 ArdourCanvas::Duple (pos_x, _height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 1));
        }
 
-       if (_height >= 100) {
-               gdouble wave_midpoint = (_height - NAME_HIGHLIGHT_SIZE) / 2.0;
-               zero_line->property_y1() = wave_midpoint;
-               zero_line->property_y2() = wave_midpoint;
-               zero_line->show();
-       } else {
-               zero_line->hide();
+       if (name_pixbuf) {
+               name_pixbuf->raise_to_top();
        }
 }
 
@@ -471,59 +526,54 @@ AudioRegionView::reset_fade_shapes ()
 void
 AudioRegionView::reset_fade_in_shape ()
 {
-       reset_fade_in_shape_width ((jack_nframes_t) audio_region().fade_in().back()->when);
+       reset_fade_in_shape_width (audio_region(), (framecnt_t) audio_region()->fade_in()->back()->when);
 }
-       
+
 void
-AudioRegionView::reset_fade_in_shape_width (jack_nframes_t width)
+AudioRegionView::reset_fade_in_shape_width (boost::shared_ptr<AudioRegion> ar, framecnt_t width)
 {
        if (fade_in_handle == 0) {
                return;
        }
 
+       fade_in_handle->show ();
+
        /* smallest size for a fade is 64 frames */
 
-       width = std::max ((jack_nframes_t) 64, width);
+       width = std::max ((framecnt_t) 64, width);
 
        Points* points;
-       double pwidth = width / samples_per_unit;
+
+       /* round here to prevent little visual glitches with sub-pixel placement */
+       double const pwidth = rint (width / frames_per_pixel);
        uint32_t npoints = std::min (gdk_screen_width(), (int) pwidth);
-       double h; 
-       
-       if (_height < 5) {
-               fade_in_shape->hide();
-               fade_in_handle->hide();
-               return;
-       }
+       double h;
+
+       double const handle_center = pwidth;
+
+       /* Put the fade in handle so that its left side is at the end-of-fade line */
+       fade_in_handle->set_x0 (handle_center);
+       fade_in_handle->set_x1 (handle_center + handle_size);
 
-       double handle_center;
-       handle_center = pwidth;
-       
-       if (handle_center > 7.0) {
-               handle_center -= 3.0;
-       } else {
-               handle_center = 3.0;
-       }
-       
-       fade_in_handle->property_x1() =  handle_center - 3.0;
-       fade_in_handle->property_x2() =  handle_center + 3.0;
-       
        if (pwidth < 5) {
+               hide_start_xfade();
                fade_in_shape->hide();
                return;
        }
 
-       fade_in_shape->show();
+       if (trackview.session()->config.get_show_region_fades()) {
+               fade_in_shape->show();
+       }
 
        float curve[npoints];
-       audio_region().fade_in().get_vector (0, audio_region().fade_in().back()->when, curve, npoints);
+       audio_region()->fade_in()->curve().get_vector (0, audio_region()->fade_in()->back()->when, curve, npoints);
 
-       points = get_canvas_points ("fade in shape", npoints+3);
+       points = get_canvas_points ("fade in shape", npoints + 3);
 
-       if (_height > NAME_HIGHLIGHT_THRESH) {
-               h = _height - NAME_HIGHLIGHT_SIZE;
+       if (_height >= NAME_HIGHLIGHT_THRESH) {
+               h = _height - NAME_HIGHLIGHT_SIZE - 2;
        } else {
-               h = _height;
+               h = _height - 2;
        }
 
        /* points *MUST* be in anti-clockwise order */
@@ -532,124 +582,153 @@ AudioRegionView::reset_fade_in_shape_width (jack_nframes_t width)
        double xdelta = pwidth/npoints;
 
        for (pi = 0, pc = 0; pc < npoints; ++pc) {
-               (*points)[pi].set_x(1 + (pc * xdelta));
-               (*points)[pi++].set_y(2 + (h - (curve[pc] * h)));
+               (*points)[pi].x = 1 + (pc * xdelta);
+               (*points)[pi++].y = 2 + (h - (curve[pc] * h));
        }
-       
+
        /* fold back */
 
-       (*points)[pi].set_x(pwidth);
-       (*points)[pi++].set_y(2);
+       (*points)[pi].x = pwidth;
+       (*points)[pi++].y = 2;
 
-       (*points)[pi].set_x(1);
-       (*points)[pi++].set_y(2);
+       (*points)[pi].x = 1;
+       (*points)[pi++].y = 2;
 
        /* connect the dots ... */
 
        (*points)[pi] = (*points)[0];
-       
-       fade_in_shape->property_points() = *points;
+
+       fade_in_shape->set (*points);
        delete points;
+
+       redraw_start_xfade_to ( ar, width);
+
+       /* ensure trim handle stays on top */
+       if (frame_handle_start) {
+               frame_handle_start->raise_to_top();
+       }
+
 }
 
 void
 AudioRegionView::reset_fade_out_shape ()
 {
-       reset_fade_out_shape_width ((jack_nframes_t) audio_region().fade_out().back()->when);
+       reset_fade_out_shape_width (audio_region(), (framecnt_t) audio_region()->fade_out()->back()->when);
 }
 
 void
-AudioRegionView::reset_fade_out_shape_width (jack_nframes_t width)
-{      
+AudioRegionView::reset_fade_out_shape_width (boost::shared_ptr<AudioRegion> ar, framecnt_t width)
+{
        if (fade_out_handle == 0) {
                return;
        }
 
+       fade_out_handle->show ();
+
        /* smallest size for a fade is 64 frames */
 
-       width = std::max ((jack_nframes_t) 64, width);
+       width = std::max ((framecnt_t) 64, width);
 
        Points* points;
-       double pwidth = width / samples_per_unit;
+
+       /* round here to prevent little visual glitches with sub-pixel placement */
+       double const pwidth = rint (width / frames_per_pixel);
        uint32_t npoints = std::min (gdk_screen_width(), (int) pwidth);
        double h;
 
-       if (_height < 5) {
-               fade_out_shape->hide();
-               fade_out_handle->hide();
-               return;
-       }
+       double const handle_center = (_region->length() - width) / frames_per_pixel;
 
-       double handle_center;
-       handle_center = (_region.length() - width) / samples_per_unit;
-       
-       if (handle_center > 7.0) {
-               handle_center -= 3.0;
-       } else {
-               handle_center = 3.0;
-       }
-       
-       fade_out_handle->property_x1() =  handle_center - 3.0;
-       fade_out_handle->property_x2() =  handle_center + 3.0;
+       /* Put the fade out handle so that its right side is at the end-of-fade line;
+        * it's `one out' for precise pixel accuracy.
+        */
+       fade_out_handle->set_x0 (handle_center - 5);
+       fade_out_handle->set_x1 (handle_center + 1);
 
        /* don't show shape if its too small */
-       
+
        if (pwidth < 5) {
+               hide_end_xfade();
                fade_out_shape->hide();
                return;
-       } 
-       
-       fade_out_shape->show();
+       }
+
+       if (trackview.session()->config.get_show_region_fades()) {
+               fade_out_shape->show();
+       }
 
        float curve[npoints];
-       audio_region().fade_out().get_vector (0, audio_region().fade_out().back()->when, curve, npoints);
+       audio_region()->fade_out()->curve().get_vector (0, audio_region()->fade_out()->back()->when, curve, npoints);
 
-       if (_height > NAME_HIGHLIGHT_THRESH) {
-               h = _height - NAME_HIGHLIGHT_SIZE;
+       if (_height >= NAME_HIGHLIGHT_THRESH) {
+               h = _height - NAME_HIGHLIGHT_SIZE - 2;
        } else {
-               h = _height;
+               h = _height - 2;
        }
 
        /* points *MUST* be in anti-clockwise order */
 
-       points = get_canvas_points ("fade out shape", npoints+3);
+       points = get_canvas_points ("fade out shape", npoints + 3);
 
        uint32_t pi, pc;
        double xdelta = pwidth/npoints;
 
        for (pi = 0, pc = 0; pc < npoints; ++pc) {
-               (*points)[pi].set_x(_pixel_width - 1 - pwidth + (pc*xdelta));
-               (*points)[pi++].set_y(2 + (h - (curve[pc] * h)));
+               (*points)[pi].x = _pixel_width - pwidth + (pc * xdelta);
+               (*points)[pi++].y = 2 + (h - (curve[pc] * h));
        }
-       
+
        /* fold back */
 
-       (*points)[pi].set_x(_pixel_width);
-       (*points)[pi++].set_y(h);
+       (*points)[pi].x = _pixel_width;
+       (*points)[pi++].y = h;
 
-       (*points)[pi].set_x(_pixel_width);
-       (*points)[pi++].set_y(2);
+       (*points)[pi].x = _pixel_width;
+       (*points)[pi++].y = 2;
 
        /* connect the dots ... */
 
        (*points)[pi] = (*points)[0];
 
-       fade_out_shape->property_points() = *points;
+       fade_out_shape->set (*points);
        delete points;
+
+       redraw_end_xfade_to (ar, width);
+
+       /* ensure trim handle stays on top */
+       if (frame_handle_end) {
+               frame_handle_end->raise_to_top();
+       }
+
+}
+
+framepos_t
+AudioRegionView::get_fade_in_shape_width ()
+{
+       return audio_region()->fade_in()->back()->when;
+}
+
+framepos_t
+AudioRegionView::get_fade_out_shape_width ()
+{
+       return audio_region()->fade_out()->back()->when;
 }
 
+
 void
-AudioRegionView::set_samples_per_unit (gdouble spu)
+AudioRegionView::set_frames_per_pixel (gdouble fpp)
 {
-       RegionView::set_samples_per_unit (spu);
+       RegionView::set_frames_per_pixel (fpp);
 
-       for (uint32_t n=0; n < waves.size(); ++n) {
-               waves[n]->property_samples_per_unit() = spu;
+       if (Config->get_show_waveforms ()) {
+               for (uint32_t n = 0; n < waves.size(); ++n) {
+                       waves[n]->set_frames_per_pixel (fpp);
+               }
        }
 
        if (gain_line) {
                gain_line->reset ();
        }
+
        reset_fade_shapes ();
 }
 
@@ -662,66 +741,52 @@ AudioRegionView::set_amplitude_above_axis (gdouble spp)
 }
 
 void
-AudioRegionView::compute_colors (Gdk::Color& basic_color)
+AudioRegionView::compute_colors (Gdk::Color const & basic_color)
 {
-       RegionView::compute_colors(basic_color);
-       
-       uint32_t r, g, b, a;
+       RegionView::compute_colors (basic_color);
 
        /* gain color computed in envelope_active_changed() */
 
-       UINT_TO_RGBA (fill_color, &r, &g, &b, &a);
-       fade_color = RGBA_TO_UINT(r,g,b,120);
+       fade_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 }
 
 void
 AudioRegionView::set_colors ()
 {
        RegionView::set_colors();
-       
+
        if (gain_line) {
-               gain_line->set_line_color (audio_region().envelope_active() ? color_map[cGainLine] : color_map[cGainLineInactive]);
+               gain_line->set_line_color (audio_region()->envelope_active() ? ARDOUR_UI::config()->canvasvar_GainLine.get() : ARDOUR_UI::config()->canvasvar_GainLineInactive.get());
        }
 
        for (uint32_t n=0; n < waves.size(); ++n) {
-               if (_region.muted()) {
-                       waves[n]->property_wave_color() = color_map[cMutedWaveForm];
+               if (_region->muted()) {
+                       waves[n]->set_outline_color (UINT_RGBA_CHANGE_A(ARDOUR_UI::config()->canvasvar_WaveForm.get(), MUTED_ALPHA));
                } else {
-                       waves[n]->property_wave_color() = color_map[cWaveForm];
+                       waves[n]->set_outline_color (ARDOUR_UI::config()->canvasvar_WaveForm.get());
                }
-       }
-}
-
-void
-AudioRegionView::show_region_editor ()
-{
-       if (editor == 0) {
-               editor = new AudioRegionEditor (trackview.session(), audio_region(), *this);
-               // GTK2FIX : how to ensure float without realizing
-               // editor->realize ();
-               // trackview.editor.ensure_float (*editor);
-       } 
 
-       editor->show_all ();
-       editor->get_window()->raise();
+               waves[n]->property_clip_color() = ARDOUR_UI::config()->canvasvar_WaveFormClip.get();
+               waves[n]->property_zero_color() = ARDOUR_UI::config()->canvasvar_ZeroLine.get();
+       }
 }
 
 void
-AudioRegionView::set_waveform_visible (bool yn)
+AudioRegionView::setup_waveform_visibility ()
 {
-       if (((_flags & WaveformVisible) != yn)) {
-               if (yn) {
-                       for (uint32_t n=0; n < waves.size(); ++n) {
-                               waves[n]->show();
-                       }
-                       _flags |= WaveformVisible;
-               } else {
-                       for (uint32_t n=0; n < waves.size(); ++n) {
-                               waves[n]->hide();
-                       }
-                       _flags &= ~WaveformVisible;
+       if (Config->get_show_waveforms ()) {
+               for (uint32_t n = 0; n < waves.size(); ++n) {
+                       /* make sure the zoom level is correct, since we don't update
+                          this when waveforms are hidden.
+                       */
+                       // CAIROCANVAS
+                       //waves[n]->set_frames_per_pixel (_frames_per_pixel);
+                       waves[n]->show();
+               }
+       } else {
+               for (uint32_t n = 0; n < waves.size(); ++n) {
+                       waves[n]->hide();
                }
-               store_flags ();
        }
 }
 
@@ -736,107 +801,124 @@ AudioRegionView::temporarily_hide_envelope ()
 void
 AudioRegionView::unhide_envelope ()
 {
-       if (gain_line && (_flags & EnvelopeVisible)) {
-               gain_line->show ();
-       }
+       update_envelope_visibility ();
 }
 
 void
-AudioRegionView::set_envelope_visible (bool yn)
+AudioRegionView::update_envelope_visibility ()
 {
-       if (gain_line && ((_flags & EnvelopeVisible) != yn)) {
-               if (yn) {
-                       gain_line->show ();
-                       _flags |= EnvelopeVisible;
-               } else {
-                       gain_line->hide ();
-                       _flags &= ~EnvelopeVisible;
-               }
-               store_flags ();
+       if (!gain_line) {
+               return;
+       }
+
+       if (Config->get_show_region_gain() || trackview.editor().current_mouse_mode() == Editing::MouseGain) {
+               gain_line->add_visibility (AutomationLine::Line);
+       } else {
+               gain_line->hide ();
        }
 }
 
 void
 AudioRegionView::create_waves ()
 {
-       bool create_zero_line = true;
-
+       // cerr << "AudioRegionView::create_waves() called on " << this << endl;//DEBUG
        RouteTimeAxisView& atv (*(dynamic_cast<RouteTimeAxisView*>(&trackview))); // ick
 
-       if (!atv.get_diskstream()) {
+       if (!atv.track()) {
                return;
        }
 
-       uint32_t nchans = atv.get_diskstream()->n_channels();
-       
+       ChanCount nchans = atv.track()->n_channels();
+
+       // cerr << "creating waves for " << _region->name() << " with wfd = " << wait_for_data
+       //              << " and channels = " << nchans.n_audio() << endl;
+
        /* in tmp_waves, set up null pointers for each channel so the vector is allocated */
-       for (uint32_t n = 0; n < nchans; ++n) {
+       for (uint32_t n = 0; n < nchans.n_audio(); ++n) {
                tmp_waves.push_back (0);
        }
-       
-       for (uint32_t n = 0; n < nchans; ++n) {
-               
-               if (n >= audio_region().n_channels()) {
+
+       for (vector<ScopedConnection*>::iterator i = _data_ready_connections.begin(); i != _data_ready_connections.end(); ++i) {
+               delete *i;
+       }
+
+       _data_ready_connections.clear ();
+
+       for (uint32_t i = 0; i < nchans.n_audio(); ++i) {
+               _data_ready_connections.push_back (0);
+       }
+
+       for (uint32_t n = 0; n < nchans.n_audio(); ++n) {
+
+               if (n >= audio_region()->n_channels()) {
                        break;
                }
-               
-               wave_caches.push_back (WaveView::create_cache ());
+
+               // cerr << "\tchannel " << n << endl;
 
                if (wait_for_data) {
-                       if (audio_region().audio_source(n).peaks_ready (bind (mem_fun(*this, &AudioRegionView::peaks_ready_handler), n), data_ready_connection)) {
+                       if (audio_region()->audio_source(n)->peaks_ready (boost::bind (&AudioRegionView::peaks_ready_handler, this, n), &_data_ready_connections[n], gui_context())) {
+                               // cerr << "\tData is ready\n";
                                create_one_wave (n, true);
                        } else {
-                               create_zero_line = false;
+                               // cerr << "\tdata is not ready\n";
+                               // we'll get a PeaksReady signal from the source in the future
+                               // and will call create_one_wave(n) then.
                        }
+
                } else {
+                       // cerr << "\tdon't delay, display today!\n";
                        create_one_wave (n, true);
                }
-       }
 
-       if (create_zero_line) {
-               zero_line = new ArdourCanvas::SimpleLine (*group);
-               zero_line->property_x1() = (gdouble) 1.0;
-               zero_line->property_x2() = (gdouble) (_region.length() / samples_per_unit) - 1.0;
-               zero_line->property_color_rgba() = (guint) color_map[cZeroLine];
-               manage_zero_line ();
        }
 }
 
 void
-AudioRegionView::create_one_wave (uint32_t which, bool direct)
+AudioRegionView::create_one_wave (uint32_t which, bool /*direct*/)
 {
+       //cerr << "AudioRegionView::create_one_wave() called which: " << which << " this: " << this << endl;//DEBUG
        RouteTimeAxisView& atv (*(dynamic_cast<RouteTimeAxisView*>(&trackview))); // ick
-       uint32_t nchans = atv.get_diskstream()->n_channels();
+       uint32_t nchans = atv.track()->n_channels().n_audio();
        uint32_t n;
-       uint32_t nwaves = std::min (nchans, audio_region().n_channels());
+       uint32_t nwaves = std::min (nchans, audio_region()->n_channels());
        gdouble ht;
 
-       if (trackview.height < NAME_HIGHLIGHT_SIZE) {
-               ht = ((trackview.height) / (double) nchans);
+       if (trackview.current_height() < NAME_HIGHLIGHT_THRESH) {
+               ht = ((trackview.current_height()) / (double) nchans);
        } else {
-               ht = ((trackview.height - NAME_HIGHLIGHT_SIZE) / (double) nchans);
+               ht = ((trackview.current_height() - NAME_HIGHLIGHT_SIZE) / (double) nchans);
        }
 
        gdouble yoff = which * ht;
 
-       WaveView *wave = new WaveView(*group);
-
-       wave->property_data_src() = (gpointer) &_region;
-       wave->property_cache() =  wave_caches[which];
-       wave->property_cache_updater() = true;
-       wave->property_channel() =  which;
-       wave->property_length_function() = (gpointer) region_length_from_c;
-       wave->property_sourcefile_length_function() = (gpointer) sourcefile_length_from_c;
-       wave->property_peak_function() =  (gpointer) region_read_peaks_from_c;
-       wave->property_x() =  0.0;
-       wave->property_y() =  yoff;
-       wave->property_height() =  (double) ht;
-       wave->property_samples_per_unit() =  samples_per_unit;
+       WaveView *wave = new WaveView (group, audio_region ());
+
+       wave->set_channel (which);
+       wave->set_x_position (0);
+       wave->set_y_position (yoff);
+       wave->set_height (ht);
+       wave->set_frames_per_pixel (frames_per_pixel);
        wave->property_amplitude_above_axis() =  _amplitude_above_axis;
-       wave->property_wave_color() = _region.muted() ? color_map[cMutedWaveForm] : color_map[cWaveForm];
-       wave->property_region_start() = _region.start();
 
-       if (!(_flags & WaveformVisible)) {
+       if (_recregion) {
+               wave->set_outline_color (_region->muted() ? UINT_RGBA_CHANGE_A(ARDOUR_UI::config()->canvasvar_RecWaveForm.get(), MUTED_ALPHA) : ARDOUR_UI::config()->canvasvar_RecWaveForm.get());
+               wave->set_fill_color (ARDOUR_UI::config()->canvasvar_RecWaveFormFill.get());
+       } else {
+               wave->set_outline_color (_region->muted() ? UINT_RGBA_CHANGE_A(ARDOUR_UI::config()->canvasvar_WaveForm.get(), MUTED_ALPHA) : ARDOUR_UI::config()->canvasvar_WaveForm.get());
+               wave->set_fill_color (ARDOUR_UI::config()->canvasvar_WaveFormFill.get());
+       }
+
+       wave->property_clip_color() = ARDOUR_UI::config()->canvasvar_WaveFormClip.get();
+       wave->property_zero_color() = ARDOUR_UI::config()->canvasvar_ZeroLine.get();
+       // CAIROCANVAS
+       // wave->property_zero_line() = true;
+
+       wave->set_region_start (_region->start());
+       wave->property_rectified() = Config->get_waveform_shape() == Rectified;
+       wave->property_logscaled() = Config->get_waveform_scale() == Logarithmic;
+
+       if (!Config->get_show_waveforms ()) {
                wave->hide();
        }
 
@@ -851,15 +933,15 @@ AudioRegionView::create_one_wave (uint32_t which, bool direct)
        } else {
                /* n-channel track, >n-channel source */
        }
-       
+
        /* see if we're all ready */
-       
+
        for (n = 0; n < nchans; ++n) {
                if (tmp_waves[n] == 0) {
                        break;
                }
        }
-       
+
        if (n == nwaves && waves.empty()) {
                /* all waves are ready */
                tmp_waves.resize(nwaves);
@@ -867,31 +949,23 @@ AudioRegionView::create_one_wave (uint32_t which, bool direct)
                waves = tmp_waves;
                tmp_waves.clear ();
 
-               if (!zero_line) {
-                       zero_line = new ArdourCanvas::SimpleLine (*group);
-                       zero_line->property_x1() = (gdouble) 1.0;
-                       zero_line->property_x2() = (gdouble) (_region.length() / samples_per_unit) - 1.0;
-                       zero_line->property_color_rgba() = (guint) color_map[cZeroLine];
-                       manage_zero_line ();
-               }
+               /* all waves created, don't hook into peaks ready anymore */
+               delete _data_ready_connections[which];
+               _data_ready_connections[which] = 0;
        }
 }
 
 void
 AudioRegionView::peaks_ready_handler (uint32_t which)
 {
-       Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun(*this, &AudioRegionView::create_one_wave), which, false));
-
-       if (!waves.empty()) {
-               /* all waves created, don't hook into peaks ready anymore */
-               data_ready_connection.disconnect ();            
-       }
+       Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&AudioRegionView::create_one_wave, this, which, false));
+       // cerr << "AudioRegionView::peaks_ready_handler() called on " << which << " this: " << this << endl;
 }
 
 void
 AudioRegionView::add_gain_point_event (ArdourCanvas::Item *item, GdkEvent *ev)
 {
-       if (gain_line == 0) {
+       if (!gain_line) {
                return;
        }
 
@@ -899,197 +973,142 @@ AudioRegionView::add_gain_point_event (ArdourCanvas::Item *item, GdkEvent *ev)
 
        /* don't create points that can't be seen */
 
-       set_envelope_visible (true);
-       
+       update_envelope_visibility ();
+
        x = ev->button.x;
        y = ev->button.y;
 
-       item->w2i (x, y);
+       item->canvas_to_item (x, y);
 
-       jack_nframes_t fx = trackview.editor.pixel_to_frame (x);
+       framepos_t fx = trackview.editor().pixel_to_sample (x);
 
-       if (fx > _region.length()) {
+       if (fx > _region->length()) {
                return;
        }
 
        /* compute vertical fractional position */
 
-       y = 1.0 - (y / (trackview.height - NAME_HIGHLIGHT_SIZE));
-       
+       y = 1.0 - (y / (_height - NAME_HIGHLIGHT_SIZE));
+
        /* map using gain line */
 
-       gain_line->view_to_model_y (y);
+       gain_line->view_to_model_coord (x, y);
 
-       trackview.session().begin_reversible_command (_("add gain control point"));
-       XMLNode &before = audio_region().envelope().get_state();
+       /* XXX STATEFUL: can't convert to stateful diff until we
+          can represent automation data with it.
+       */
 
+       trackview.session()->begin_reversible_command (_("add gain control point"));
+       XMLNode &before = audio_region()->envelope()->get_state();
 
-       if (!audio_region().envelope_active()) {
-               XMLNode &before = audio_region().get_state();
-               audio_region().set_envelope_active(true);
-               XMLNode &after = audio_region().get_state();
-               trackview.session().add_command (new MementoCommand<AudioRegion>(audio_region(), before, after));
+       if (!audio_region()->envelope_active()) {
+               XMLNode &region_before = audio_region()->get_state();
+               audio_region()->set_envelope_active(true);
+               XMLNode &region_after = audio_region()->get_state();
+               trackview.session()->add_command (new MementoCommand<AudioRegion>(*(audio_region().get()), &region_before, &region_after));
        }
 
-       audio_region().envelope().add (fx, y);
-       
-       XMLNode &after = audio_region().envelope().get_state();
-       trackview.session().add_command (new MementoCommand<Curve>(audio_region().envelope(), before, after));
-       trackview.session().commit_reversible_command ();
+       audio_region()->envelope()->add (fx, y);
+
+       XMLNode &after = audio_region()->envelope()->get_state();
+       trackview.session()->add_command (new MementoCommand<AutomationList>(*audio_region()->envelope().get(), &before, &after));
+       trackview.session()->commit_reversible_command ();
 }
 
 void
-AudioRegionView::remove_gain_point_event (ArdourCanvas::Item *item, GdkEvent *ev)
+AudioRegionView::remove_gain_point_event (ArdourCanvas::Item *item, GdkEvent */*ev*/)
 {
-        ControlPoint *cp = reinterpret_cast<ControlPoint *> (item->get_data ("control_point"));
-       audio_region().envelope().erase (cp->model);
+       ControlPoint *cp = reinterpret_cast<ControlPoint *> (item->get_data ("control_point"));
+       audio_region()->envelope()->erase (cp->model());
 }
 
 void
-AudioRegionView::store_flags()
+AudioRegionView::setup_waveform_shape ()
 {
-       XMLNode *node = new XMLNode ("GUI");
-
-       node->add_property ("waveform-visible", (_flags & WaveformVisible) ? "yes" : "no");
-       node->add_property ("envelope-visible", (_flags & EnvelopeVisible) ? "yes" : "no");
-
-       _region.add_extra_xml (*node);
+       for (vector<WaveView *>::iterator wave = waves.begin(); wave != waves.end() ; ++wave) {
+               (*wave)->property_rectified() = Config->get_waveform_shape() == Rectified;
+       }
 }
 
 void
-AudioRegionView::set_flags (XMLNode* node)
+AudioRegionView::setup_waveform_scale ()
 {
-       XMLProperty *prop;
-
-       if ((prop = node->property ("waveform-visible")) != 0) {
-               if (prop->value() == "yes") {
-                       _flags |= WaveformVisible;
-               }
-       }
-
-       if ((prop = node->property ("envelope-visible")) != 0) {
-               if (prop->value() == "yes") {
-                       _flags |= EnvelopeVisible;
-               }
+       for (vector<WaveView *>::iterator wave = waves.begin(); wave != waves.end() ; ++wave) {
+               (*wave)->property_logscaled() = Config->get_waveform_scale() == Logarithmic;
        }
 }
-       
-void
-AudioRegionView::set_waveform_shape (WaveformShape shape)
-{
-       bool yn;
-
-       /* this slightly odd approach is to leave the door open to 
-          other "shapes" such as spectral displays, etc.
-       */
 
-       switch (shape) {
-       case Rectified:
-               yn = true;
-               break;
-
-       default:
-               yn = false;
-               break;
-       }
-
-       if (yn != (bool) (_flags & WaveformRectified)) {
-               for (vector<WaveView *>::iterator wave = waves.begin(); wave != waves.end() ; ++wave) {
-                       (*wave)->property_rectified() = yn;
-               }
-
-               if (zero_line) {
-                       if (yn) {
-                               zero_line->hide();
-                       } else {
-                               zero_line->show();
-                       }
-               }
-
-               if (yn) {
-                       _flags |= WaveformRectified;
-               } else {
-                       _flags &= ~WaveformRectified;
-               }
-       }
-}
 
 GhostRegion*
-AudioRegionView::add_ghost (AutomationTimeAxisView& atv)
+AudioRegionView::add_ghost (TimeAxisView& tv)
 {
        RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
        assert(rtv);
 
-       double unit_position = _region.position () / samples_per_unit;
-       GhostRegion* ghost = new GhostRegion (atv, unit_position);
+       double unit_position = _region->position () / frames_per_pixel;
+       AudioGhostRegion* ghost = new AudioGhostRegion (tv, trackview, unit_position);
        uint32_t nchans;
-       
-       nchans = rtv->get_diskstream()->n_channels();
+
+       nchans = rtv->track()->n_channels().n_audio();
 
        for (uint32_t n = 0; n < nchans; ++n) {
-               
-               if (n >= audio_region().n_channels()) {
+
+               if (n >= audio_region()->n_channels()) {
                        break;
                }
-               
-               WaveView *wave = new WaveView(*ghost->group);
-
-               wave->property_data_src() =  &_region;
-               wave->property_cache() =  wave_caches[n];
-               wave->property_cache_updater() = false;
-               wave->property_channel() = n;
-               wave->property_length_function() = (gpointer)region_length_from_c;
-               wave->property_sourcefile_length_function() = (gpointer) sourcefile_length_from_c;
-               wave->property_peak_function() =  (gpointer) region_read_peaks_from_c;
-               wave->property_x() =  0.0;
-               wave->property_samples_per_unit() =  samples_per_unit;
+
+               WaveView *wave = new WaveView (ghost->group, audio_region());
+
+               wave->set_channel (n);
+               wave->set_x_position (0);
+               wave->set_frames_per_pixel (frames_per_pixel);
                wave->property_amplitude_above_axis() =  _amplitude_above_axis;
-               wave->property_wave_color() = color_map[cGhostTrackWave];
-               wave->property_region_start() = _region.start();
+               wave->set_region_start (_region->start());
 
                ghost->waves.push_back(wave);
        }
 
        ghost->set_height ();
-       ghost->set_duration (_region.length() / samples_per_unit);
+       ghost->set_duration (_region->length() / frames_per_pixel);
+       ghost->set_colors();
        ghosts.push_back (ghost);
 
-       ghost->GoingAway.connect (mem_fun(*this, &AudioRegionView::remove_ghost));
-
        return ghost;
 }
 
 void
-AudioRegionView::entered ()
+AudioRegionView::entered (bool internal_editing)
 {
-       if (gain_line && _flags & EnvelopeVisible) {
-               gain_line->show_all_control_points ();
+       trackview.editor().set_current_trimmable (_region);
+       trackview.editor().set_current_movable (_region);
+       
+       if (gain_line && trackview.editor().current_mouse_mode() == Editing::MouseGain) {
+               gain_line->add_visibility (AutomationLine::ControlPoints);
        }
 
-       uint32_t r,g,b,a;
-       UINT_TO_RGBA(fade_color,&r,&g,&b,&a);
-       a=255;
-       
-       if (fade_in_handle) {
-               fade_in_handle->property_fill_color_rgba() = RGBA_TO_UINT(r,g,b,a);
-               fade_out_handle->property_fill_color_rgba() = RGBA_TO_UINT(r,g,b,a);
+       if (fade_in_handle && !internal_editing) {
+               fade_in_handle->set_outline_color (RGBA_TO_UINT (0, 0, 0, 255));
+               fade_in_handle->set_fill_color (UINT_RGBA_CHANGE_A (fade_color, 255));
+               fade_out_handle->set_outline_color (RGBA_TO_UINT (0, 0, 0, 255));
+               fade_out_handle->set_fill_color (UINT_RGBA_CHANGE_A (fade_color, 255));
        }
 }
 
 void
 AudioRegionView::exited ()
 {
-       if (gain_line) {
-               gain_line->hide_all_but_selected_control_points ();
+       trackview.editor().set_current_trimmable (boost::shared_ptr<Trimmable>());
+       trackview.editor().set_current_movable (boost::shared_ptr<Movable>());
+
+       if (gain_line && trackview.editor().current_mouse_mode() == Editing::MouseGain) {
+               gain_line->remove_visibility (AutomationLine::ControlPoints);
        }
-       
-       uint32_t r,g,b,a;
-       UINT_TO_RGBA(fade_color,&r,&g,&b,&a);
-       a=0;
-       
+
        if (fade_in_handle) {
-               fade_in_handle->property_fill_color_rgba() = RGBA_TO_UINT(r,g,b,a);
-               fade_out_handle->property_fill_color_rgba() = RGBA_TO_UINT(r,g,b,a);
+               fade_in_handle->set_outline_color (RGBA_TO_UINT (0, 0, 0, 0));
+               fade_in_handle->set_fill_color (UINT_RGBA_CHANGE_A (fade_color, 0));
+               fade_out_handle->set_outline_color (RGBA_TO_UINT (0, 0, 0, 0));
+               fade_out_handle->set_fill_color (UINT_RGBA_CHANGE_A (fade_color, 0));
        }
 }
 
@@ -1097,56 +1116,553 @@ void
 AudioRegionView::envelope_active_changed ()
 {
        if (gain_line) {
-               gain_line->set_line_color (audio_region().envelope_active() ? color_map[cGainLine] : color_map[cGainLineInactive]);
+               gain_line->set_line_color (audio_region()->envelope_active() ? ARDOUR_UI::config()->canvasvar_GainLine.get() : ARDOUR_UI::config()->canvasvar_GainLineInactive.get());
        }
 }
 
 void
-AudioRegionView::set_waveview_data_src()
+AudioRegionView::color_handler ()
 {
+       //case cMutedWaveForm:
+       //case cWaveForm:
+       //case cWaveFormClip:
+       //case cZeroLine:
+       set_colors ();
 
-       double unit_length= _region.length() / samples_per_unit;
+       //case cGainLineInactive:
+       //case cGainLine:
+       envelope_active_changed();
 
-       for (uint32_t n = 0; n < waves.size(); ++n) {
-               // TODO: something else to let it know the channel
-               waves[n]->property_data_src() = &_region;
+}
+
+void
+AudioRegionView::set_frame_color ()
+{
+       if (!frame) {
+               return;
        }
-       
-       for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
-               
-               (*i)->set_duration (unit_length);
-               
-               for (vector<WaveView*>::iterator w = (*i)->waves.begin(); w != (*i)->waves.end(); ++w) {
-                       (*w)->property_data_src() = &_region;
+
+       if (_region->opaque()) {
+               fill_opacity = 130;
+       } else {
+               fill_opacity = 0;
+       }
+
+       TimeAxisViewItem::set_frame_color ();
+
+        uint32_t wc;
+        uint32_t fc;
+
+       if (_selected) {
+                if (_region->muted()) {
+                        wc = UINT_RGBA_CHANGE_A(ARDOUR_UI::config()->canvasvar_SelectedWaveForm.get(), MUTED_ALPHA);
+                } else {
+                        wc = ARDOUR_UI::config()->canvasvar_SelectedWaveForm.get();
+                }
+                fc = ARDOUR_UI::config()->canvasvar_SelectedWaveFormFill.get();
+       } else {
+               if (_recregion) {
+                        if (_region->muted()) {
+                                wc = UINT_RGBA_CHANGE_A(ARDOUR_UI::config()->canvasvar_RecWaveForm.get(), MUTED_ALPHA);
+                        } else {
+                                wc = ARDOUR_UI::config()->canvasvar_RecWaveForm.get();
+                        }
+                        fc = ARDOUR_UI::config()->canvasvar_RecWaveFormFill.get();
+               } else {
+                        if (_region->muted()) {
+                                wc = UINT_RGBA_CHANGE_A(ARDOUR_UI::config()->canvasvar_WaveForm.get(), MUTED_ALPHA);
+                        } else {
+                                wc = ARDOUR_UI::config()->canvasvar_WaveForm.get();
+                        }
+                        fc = ARDOUR_UI::config()->canvasvar_WaveFormFill.get();
+               }
+       }
+
+        for (vector<ArdourCanvas::WaveView*>::iterator w = waves.begin(); w != waves.end(); ++w) {
+               (*w)->set_outline_color (wc);
+                if (!_region->muted()) {
+                        (*w)->set_fill_color (fc);
+                }
+        }
+}
+
+void
+AudioRegionView::set_fade_visibility (bool yn)
+{
+       if (yn) {
+               if (fade_in_shape) {
+                       fade_in_shape->show();
+               }
+               if (fade_out_shape) {
+                       fade_out_shape->show ();
+               }
+               if (fade_in_handle) {
+                       fade_in_handle->show ();
+               }
+               if (fade_out_handle) {
+                       fade_out_handle->show ();
+               }
+       } else {
+               if (fade_in_shape) {
+                       fade_in_shape->hide();
+               }
+               if (fade_out_shape) {
+                       fade_out_shape->hide ();
+               }
+               if (fade_in_handle) {
+                       fade_in_handle->hide ();
+               }
+               if (fade_out_handle) {
+                       fade_out_handle->hide ();
                }
        }
+}
+
+void
+AudioRegionView::update_coverage_frames (LayerDisplay d)
+{
+       RegionView::update_coverage_frames (d);
+
+       if (fade_in_handle) {
+               fade_in_handle->raise_to_top ();
+               fade_out_handle->raise_to_top ();
+       }
+}
+
+void
+AudioRegionView::show_region_editor ()
+{
+       if (editor == 0) {
+               editor = new AudioRegionEditor (trackview.session(), audio_region());
+       }
+
+       editor->present ();
+       editor->set_position (Gtk::WIN_POS_MOUSE);
+       editor->show_all();
+}
+
+void
+AudioRegionView::transients_changed ()
+{
+       AnalysisFeatureList analysis_features = _region->transients();
+
+       while (feature_lines.size() < analysis_features.size()) {
+
+               ArdourCanvas::Line* canvas_item = new ArdourCanvas::Line(group);
+
+               canvas_item->set (ArdourCanvas::Duple (-1.0, 2.0),
+                                 ArdourCanvas::Duple (1.0, _height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 1));
+
+               canvas_item->set_outline_width (1);
+               canvas_item->property_first_arrowhead() = TRUE;
+               canvas_item->property_last_arrowhead() = TRUE;
+               canvas_item->property_arrow_shape_a() = 11.0;
+               canvas_item->property_arrow_shape_b() = 0.0;
+               canvas_item->property_arrow_shape_c() = 4.0;
+
+               canvas_item->raise_to_top ();
+               canvas_item->show ();
+
+               canvas_item->set_data ("regionview", this);
+               canvas_item->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_feature_line_event), canvas_item, this));
+
+               feature_lines.push_back (make_pair(0, canvas_item));
+       }
+
+       while (feature_lines.size() > analysis_features.size()) {
+               ArdourCanvas::Line* line = feature_lines.back().second;
+               feature_lines.pop_back ();
+               delete line;
+       }
+
+       AnalysisFeatureList::const_iterator i;
+       list<std::pair<framepos_t, ArdourCanvas::Line*> >::iterator l;
+
+       for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
+
+               float *pos = new float;
+               *pos = trackview.editor().sample_to_pixel (*i);
+
+               (*l).second->set (
+                       ArdourCanvas::Duple (*pos, 2.0),
+                       ArdourCanvas::Duple (*pos, _height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 1)
+                       );
+
+               (*l).second->set_data ("position", pos);
+               (*l).first = *i;
+       }
+}
+
+void
+AudioRegionView::update_transient(float /*old_pos*/, float new_pos)
+{
+       /* Find frame at old pos, calulate new frame then update region transients*/
+       list<std::pair<framepos_t, ArdourCanvas::Line*> >::iterator l;
+
+       for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
+
+               /* Line has been updated in drag so we compare to new_pos */
+
+               float* pos = (float*) (*l).second->get_data ("position");
+
+               if (rint(new_pos) == rint(*pos)) {
+
+                   framepos_t old_frame = (*l).first;
+                   framepos_t new_frame = trackview.editor().pixel_to_sample (new_pos);
+
+                   _region->update_transient (old_frame, new_frame);
+
+                   break;
+               }
+       }
+}
+
+void
+AudioRegionView::remove_transient(float pos)
+{
+       /* Find frame at old pos, calulate new frame then update region transients*/
+       list<std::pair<framepos_t, ArdourCanvas::Line*> >::iterator l;
+
+       for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
+
+               /* Line has been updated in drag so we compare to new_pos */
+               float *line_pos = (float*) (*l).second->get_data ("position");
+
+               if (rint(pos) == rint(*line_pos)) {
+                   _region->remove_transient ((*l).first);
+                   break;
+               }
+       }
+}
+
+void
+AudioRegionView::thaw_after_trim ()
+{
+       RegionView::thaw_after_trim ();
+       unhide_envelope ();
+       drag_end ();
+}
+
+void
+AudioRegionView::redraw_start_xfade ()
+{
+       boost::shared_ptr<AudioRegion> ar (audio_region());
+
+       if (!ar->fade_in() || ar->fade_in()->empty()) {
+               return;
+       }
+
+       show_start_xfade();
 
+       redraw_start_xfade_to (ar, ar->fade_in()->back()->when);
 }
 
 void
-AudioRegionView::color_handler (ColorID id, uint32_t val)
-{
-       switch (id) {
-       case cMutedWaveForm:
-       case cWaveForm:
-               set_colors ();
-               break;
-
-       case cGainLineInactive:
-       case cGainLine:
-               envelope_active_changed();
-               break;
+AudioRegionView::redraw_start_xfade_to (boost::shared_ptr<AudioRegion> ar, framecnt_t len)
+{
+       int32_t const npoints = trackview.editor().sample_to_pixel (len);
+
+       if (npoints < 3) {
+               return;
+       }
+
+       if (!start_xfade_in) {
+               start_xfade_in = new ArdourCanvas::PolyLine (group);
+               // CAIROCANVAS
+               // start_xfade_in->set_width_pixels (1);
+               start_xfade_in->set_outline_color (ARDOUR_UI::config()->canvasvar_GainLine.get());
+       }
+
+       if (!start_xfade_out) {
+               start_xfade_out = new ArdourCanvas::PolyLine (group);
+               // CAIROCANVAS
+               // start_xfade_out->set_width_pixels (1);
+               uint32_t col = UINT_RGBA_CHANGE_A (ARDOUR_UI::config()->canvasvar_GainLine.get(), 128);
+               start_xfade_out->set_outline_color (col);
+       }
+
+       if (!start_xfade_rect) {
+               start_xfade_rect = new ArdourCanvas::Rectangle (group);
+               // CAIROCANVAS
+               // start_xfade_rect->property_draw() = true;
+               start_xfade_rect->set_fill (true);
+               start_xfade_rect->set_fill_color (ARDOUR_UI::config()->canvasvar_ActiveCrossfade.get());
+               start_xfade_rect->set_outline (false);
+               start_xfade_rect->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_start_xfade_event), start_xfade_rect, this));
+               start_xfade_rect->set_data ("regionview", this);
+       }
+
+       ArdourCanvas::Points* points = get_canvas_points ("xfade edit redraw", npoints);
+       boost::scoped_array<float> vec (new float[npoints]);
+
+       double effective_height;
+       if (_height >= NAME_HIGHLIGHT_THRESH) {
+               effective_height = _height - NAME_HIGHLIGHT_SIZE - 2;
+       } else {
+               effective_height = _height - 2;
+       }
+
+       ar->fade_in()->curve().get_vector (0, ar->fade_in()->back()->when, vec.get(), npoints);
+
+       for (int i = 0, pci = 0; i < npoints; ++i) {
+               ArdourCanvas::Duple &p ((*points)[pci++]);
+               p.x = i;
+               p.y = 1.0 + effective_height - (effective_height * vec.get()[i]);
+       }
+
+       start_xfade_rect->set (ArdourCanvas::Rect (((*points)[0]).x, 1.0, ((*points)[npoints-1]).x, effective_height));
+       start_xfade_rect->show ();
+
+       start_xfade_in->set (*points);
+       start_xfade_in->show ();
+       start_xfade_in->raise_to_top ();
+
+       /* fade out line */
+
+       boost::shared_ptr<AutomationList> inverse = ar->inverse_fade_in();
+
+       if (!inverse) {
+
+               for (int i = 0, pci = 0; i < npoints; ++i) {
+                       ArdourCanvas::Duple &p ((*points)[pci++]);
+                       p.x = i;
+                       p.y = 1.0 + effective_height - (effective_height * (1.0 - vec.get()[i]));
+               }
+
+       } else {
+
+               inverse->curve().get_vector (0, inverse->back()->when, vec.get(), npoints);
                
-       case cZeroLine:
-               if (zero_line) {
-                       zero_line->property_color_rgba() = (guint) color_map[cZeroLine];
+               for (int i = 0, pci = 0; i < npoints; ++i) {
+                       ArdourCanvas::Duple &p ((*points)[pci++]);
+                       p.x = i;
+                       p.y = 1.0 + effective_height - (effective_height * vec.get()[i]);
                }
-               break;
+       }
+
+       start_xfade_out->set (*points);
+       start_xfade_out->show ();
+       start_xfade_out->raise_to_top ();
+
+       start_xfade_rect->raise_to_top ();  //this needs to be topmost so the lines don't steal mouse focus
+
+       show_start_xfade();
+
+       delete points;
+}
+
+void
+AudioRegionView::redraw_end_xfade ()
+{
+       boost::shared_ptr<AudioRegion> ar (audio_region());
+
+       if (!ar->fade_out() || ar->fade_out()->empty()) {
+               return;
+       }
+
+       show_end_xfade();
+
+       redraw_end_xfade_to (ar, ar->fade_out()->back()->when);
+}
+
+void
+AudioRegionView::redraw_end_xfade_to (boost::shared_ptr<AudioRegion> ar, framecnt_t len)
+{
+       int32_t const npoints = trackview.editor().sample_to_pixel (len);
+
+       if (npoints < 3) {
+               return;
+       }
+
+       if (!end_xfade_in) {
+               end_xfade_in = new ArdourCanvas::PolyLine (group);
+               // CAIROCANVAS
+               // end_xfade_in->property_width_pixels() = 1;
+               end_xfade_in->set_outline_color (ARDOUR_UI::config()->canvasvar_GainLine.get());
+       }
+
+       if (!end_xfade_out) {
+               end_xfade_out = new ArdourCanvas::PolyLine (group);
+               // CAIROCANVAS
+               // end_xfade_out->property_width_pixels() = 1;
+               uint32_t col UINT_RGBA_CHANGE_A (ARDOUR_UI::config()->canvasvar_GainLine.get(), 128);
+               end_xfade_out->set_outline_color (col);
+       }
+
+       if (!end_xfade_rect) {
+               end_xfade_rect = new ArdourCanvas::Rectangle (group);
+               // CAIROCANVAS
+               // end_xfade_rect->property_draw() = true;
+               end_xfade_rect->set_fill (true);
+               end_xfade_rect->set_fill_color (ARDOUR_UI::config()->canvasvar_ActiveCrossfade.get());
+               end_xfade_rect->set_outline (0);
+               end_xfade_rect->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_end_xfade_event), end_xfade_rect, this));
+               end_xfade_rect->set_data ("regionview", this);
+       }
+
+       Points* points = get_canvas_points ("xfade edit redraw", npoints);
+       boost::scoped_array<float> vec (new float[npoints]);
+
+       ar->fade_out()->curve().get_vector (0, ar->fade_out()->back()->when, vec.get(), npoints);
+
+       double rend = trackview.editor().sample_to_pixel (_region->length() - len);
+
+       double effective_height;
+       if (_height >= NAME_HIGHLIGHT_THRESH) {
+               effective_height = _height - NAME_HIGHLIGHT_SIZE - 2;
+       } else {
+               effective_height = _height - 2;
+       }
+
+       for (int i = 0, pci = 0; i < npoints; ++i) {
+               ArdourCanvas::Duple &p ((*points)[pci++]);
+               p.x = rend + i;
+               p.y = 1.0 + effective_height - (effective_height * vec.get()[i]);
+       }
+
+       end_xfade_rect->set (ArdourCanvas::Rect (((*points)[0]).x, 1.0, ((*points)[npoints-1]).x, effective_height));
+       end_xfade_rect->show ();
+
+       end_xfade_in->set (*points);
+       end_xfade_in->show ();
+       end_xfade_in->raise_to_top ();
+
+       /* fade in line */
 
-       case cGhostTrackWave:
-               break;
+       boost::shared_ptr<AutomationList> inverse = ar->inverse_fade_out ();
 
-       default:
-               break;
+       if (!inverse) {
+
+               for (int i = 0, pci = 0; i < npoints; ++i) {
+                       ArdourCanvas::Duple &p ((*points)[pci++]);
+                       p.x = rend + i;
+                       p.y = 1.0 + effective_height - (effective_height * (1.0 - vec.get()[i]));
+               }
+
+       } else {
+
+               inverse->curve().get_vector (inverse->front()->when, inverse->back()->when, vec.get(), npoints);
+
+               for (int i = 0, pci = 0; i < npoints; ++i) {
+                       ArdourCanvas::Duple &p ((*points)[pci++]);
+                       p.x = rend + i;
+                       p.y = 1.0 + effective_height - (effective_height * vec.get()[i]);
+               }
+       }
+
+       end_xfade_out->set (*points);
+       end_xfade_out->show ();
+       end_xfade_out->raise_to_top ();
+
+       end_xfade_rect->raise_to_top ();  //this needs to be topmost so the lines don't steal mouse focus
+
+       show_end_xfade();
+
+       delete points;
+}
+
+void
+AudioRegionView::hide_xfades ()
+{
+       hide_start_xfade ();
+       hide_end_xfade ();
+}
+
+void
+AudioRegionView::hide_start_xfade ()
+{
+       if (start_xfade_in) {
+               start_xfade_in->hide();
+       }
+       if (start_xfade_out) {
+               start_xfade_out->hide();
+       }
+       if (start_xfade_rect) {
+               start_xfade_rect->hide ();
+       }
+
+       _start_xfade_visible = false;
+}
+
+void
+AudioRegionView::hide_end_xfade ()
+{
+       if (end_xfade_in) {
+               end_xfade_in->hide();
+       }
+       if (end_xfade_out) {
+               end_xfade_out->hide();
+       }
+       if (end_xfade_rect) {
+               end_xfade_rect->hide ();
+       }
+
+       _end_xfade_visible = false;
+}
+
+void
+AudioRegionView::show_start_xfade ()
+{
+       if (start_xfade_in) {
+               start_xfade_in->show();
+       }
+       if (start_xfade_out) {
+               start_xfade_out->show();
+       }
+       if (start_xfade_rect) {
+               start_xfade_rect->show ();
+       }
+
+       _start_xfade_visible = true;
+}
+
+void
+AudioRegionView::show_end_xfade ()
+{
+       if (end_xfade_in) {
+               end_xfade_in->show();
+       }
+       if (end_xfade_out) {
+               end_xfade_out->show();
+       }
+       if (end_xfade_rect) {
+               end_xfade_rect->show ();
+       }
+
+       _end_xfade_visible = true;
+}
+
+void
+AudioRegionView::show_xfades ()
+{
+       show_start_xfade ();
+       show_end_xfade ();
+}
+
+void
+AudioRegionView::drag_start ()
+{
+       TimeAxisViewItem::drag_start ();
+
+       //we used to hide xfades here.  I don't see the point with the new model, but we can re-implement if needed
+}
+
+void
+AudioRegionView::drag_end ()
+{
+       TimeAxisViewItem::drag_end ();
+
+       //see comment for drag_start
+}
+
+void
+AudioRegionView::parameter_changed (string const & p)
+{
+       if (p == "show-waveforms") {
+               setup_waveform_visibility ();
+       } else if (p == "waveform-scale") {
+               setup_waveform_scale ();
+       } else if (p == "waveform-shape") {
+               setup_waveform_shape ();
        }
 }