trying to track down why undo doesn't remove xfade rendering on OS X
[ardour.git] / gtk2_ardour / audio_region_view.cc
index 53e70fbd79b1566535cb55e79416f4ef3ea01e1e..31a2e4ca06c979999574a0a3b81d50ade91304e8 100644 (file)
@@ -20,6 +20,8 @@
 #include <cassert>
 #include <algorithm>
 
+#include <boost/scoped_ptr.hpp>
+
 #include <gtkmm.h>
 
 #include <gtkmm2ext/gtk_ui.h>
@@ -43,6 +45,7 @@
 #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"
@@ -63,77 +66,70 @@ 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, 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)
        , fade_position_line(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, 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)
        , fade_position_line(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)
 {
-}
-
-
-AudioRegionView::AudioRegionView (const AudioRegionView& other)
-       : sigc::trackable(other)
-       , RegionView (other)
-       , zero_line(0)
-       , fade_in_shape(0)
-       , fade_out_shape(0)
-       , fade_in_handle(0)
-       , fade_out_handle(0)
-       , fade_position_line(0)
-       , gain_line(0)
-       , _amplitude_above_axis(1.0)
-       , _flags(0)
-       , 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, false);
+       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))
-       , zero_line(0)
        , fade_in_shape(0)
        , fade_out_shape(0)
        , fade_in_handle(0)
        , fade_out_handle(0)
        , fade_position_line(0)
-       , gain_line(0)
-       , _amplitude_above_axis(1.0)
-       , _flags(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;
@@ -143,6 +139,8 @@ AudioRegionView::AudioRegionView (const AudioRegionView& other, boost::shared_pt
        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
@@ -153,24 +151,7 @@ AudioRegionView::init (Gdk::Color const & basic_color, bool wfd)
 
        RegionView::init (basic_color, wfd);
 
-       XMLNode *node;
-
        _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 ();
-       }
-
-       /* make envelope visible if it has anything interesting in it */
-       boost::shared_ptr<AutomationList> env = audio_region()->envelope ();
-       if (env->size() > 2 || (env->size() == 2 && env->front()->value != env->back()->value)) {
-               _flags |= EnvelopeVisible;
-       }
 
        compute_colors (basic_color);
 
@@ -187,16 +168,16 @@ AudioRegionView::init (Gdk::Color const & basic_color, bool wfd)
        if (!_recregion) {
                fade_in_handle = new ArdourCanvas::SimpleRect (*group);
                fade_in_handle->property_fill_color_rgba() = UINT_RGBA_CHANGE_A (fill_color, 0);
-               fade_in_handle->property_outline_pixels() = 0;
+               fade_in_handle->property_outline_color_rgba() = RGBA_TO_UINT (0, 0, 0, 0);
 
                fade_in_handle->set_data ("regionview", this);
 
                fade_out_handle = new ArdourCanvas::SimpleRect (*group);
                fade_out_handle->property_fill_color_rgba() = UINT_RGBA_CHANGE_A (fill_color, 0);
-               fade_out_handle->property_outline_pixels() = 0;
+               fade_out_handle->property_outline_color_rgba() = RGBA_TO_UINT (0, 0, 0, 0);
 
                fade_out_handle->set_data ("regionview", this);
-               
+
                fade_position_line = new ArdourCanvas::SimpleLine (*group);
                fade_position_line->property_color_rgba() = 0xBBBBBBAA;
                fade_position_line->property_y1() = 7;
@@ -214,15 +195,10 @@ AudioRegionView::init (Gdk::Color const & basic_color, bool wfd)
        const string line_name = _region->name() + ":gain";
 
        if (!Profile->get_sae()) {
-               gain_line = new AudioRegionGainLine (line_name, *this, *group, audio_region()->envelope());
+               gain_line.reset (new AudioRegionGainLine (line_name, *this, *group, audio_region()->envelope()));
        }
-
-       if (!(_flags & EnvelopeVisible)) {
-               gain_line->hide ();
-       } else {
-               gain_line->show ();
-       }
-
+       
+       update_envelope_visibility ();
        gain_line->reset ();
 
        set_height (trackview.current_height());
@@ -252,6 +228,10 @@ AudioRegionView::init (Gdk::Color const & basic_color, bool wfd)
 
        set_colors ();
 
+       setup_waveform_visibility ();
+       setup_waveform_shape ();
+       setup_waveform_scale ();
+
        /* XXX sync mark drag? */
 }
 
@@ -269,13 +249,11 @@ AudioRegionView::~AudioRegionView ()
                delete *i;
        }
 
-       for (list<std::pair<framepos_t, ArdourCanvas::SimpleLine*> >::iterator i = feature_lines.begin(); i != feature_lines.end(); ++i) {
+       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 */
 
-       delete gain_line;
+       /* all waveviews etc will be destroyed when the group is destroyed */
 }
 
 boost::shared_ptr<ARDOUR::AudioRegion>
@@ -289,7 +267,7 @@ void
 AudioRegionView::region_changed (const PropertyChange& what_changed)
 {
        ENSURE_GUI_THREAD (*this, &AudioRegionView::region_changed, what_changed);
-        // cerr << "AudioRegionView::region_changed() called" << endl;
+       cerr << "AudioRegionView::region_changed() called" << endl;
 
        RegionView::region_changed (what_changed);
 
@@ -297,17 +275,30 @@ AudioRegionView::region_changed (const PropertyChange& what_changed)
                region_scale_amplitude_changed ();
        }
        if (what_changed.contains (ARDOUR::Properties::fade_in)) {
-                fade_in_changed ();
+               cerr << region()->name() << " in changed\n";
+               stacktrace (cerr, 40);
+               fade_in_changed ();
        }
        if (what_changed.contains (ARDOUR::Properties::fade_out)) {
+               cerr << region()->name() << " out changed\n";
                fade_out_changed ();
        }
        if (what_changed.contains (ARDOUR::Properties::fade_in_active)) {
+               cerr << region()->name() << " in active changed\n";
                fade_in_active_changed ();
        }
        if (what_changed.contains (ARDOUR::Properties::fade_out_active)) {
+               cerr << region()->name() << " out active changed\n";
                fade_out_active_changed ();
        }
+       if (what_changed.contains (ARDOUR::Properties::fade_in_is_xfade)) {
+               cerr << region()->name() << " in is xfade changed\n";
+               fade_in_changed ();
+       }
+       if (what_changed.contains (ARDOUR::Properties::fade_out_is_xfade)) {
+               cerr << region()->name() << " out is xfade changed\n";
+               fade_out_changed ();
+       }
        if (what_changed.contains (ARDOUR::Properties::envelope_active)) {
                envelope_active_changed ();
        }
@@ -327,6 +318,7 @@ AudioRegionView::fade_out_changed ()
 {
        reset_fade_out_shape ();
 }
+
 void
 AudioRegionView::fade_in_active_changed ()
 {
@@ -405,17 +397,16 @@ AudioRegionView::region_resized (const PropertyChange& what_changed)
                                }
                        }
                }
-               
+
                /* hide transient lines that extend beyond the region end */
-               
-               list<std::pair<framepos_t, ArdourCanvas::SimpleLine*> >::iterator l;
-               
+
+               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();
+                       if (l->first > _region->length() - 1) {
+                               l->second->hide();
+                       } else {
+                               l->second->show();
                        }
                }
        }
@@ -427,10 +418,6 @@ 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 || _height < 5.0 || !trackview.session()->config.get_show_region_fades()) {
                        fade_in_handle->hide();
@@ -438,19 +425,27 @@ AudioRegionView::reset_width_dependent_items (double pixel_width)
                }
                else {
                        fade_in_handle->show();
-                       fade_out_handle->show();                  
+                       fade_out_handle->show();
                }
        }
 
        AnalysisFeatureList analysis_features = _region->transients();
        AnalysisFeatureList::const_iterator i;
-       list<std::pair<framepos_t, ArdourCanvas::SimpleLine*> >::iterator l;
+
+       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) {
-               (*l).second->property_x1() = trackview.editor().frame_to_pixel (*i);
-               (*l).second->property_x2() = trackview.editor().frame_to_pixel (*i);
+
+               float x_pos = trackview.editor().frame_to_pixel (*i);
+
+               ArdourCanvas::Points points;
+               points.push_back(Gnome::Art::Point(x_pos, 2.0)); // first x-coord needs to be a non-normal value
+               points.push_back(Gnome::Art::Point(x_pos, _height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 1));
+
+               (*l).first = *i;
+               (*l).second->property_points() = points;
        }
-       
+
        reset_fade_shapes ();
 }
 
@@ -473,17 +468,15 @@ AudioRegionView::setup_fade_handle_positions()
 {
        /* position of fade handle offset from the top of the region view */
        double const handle_pos = 2;
-       /* height of fade handles */
-       double const handle_height = 5;
 
        if (fade_in_handle) {
                fade_in_handle->property_y1() = handle_pos;
-               fade_in_handle->property_y2() = handle_pos + handle_height;
+               fade_in_handle->property_y2() = handle_pos + handle_size;
        }
 
        if (fade_out_handle) {
                fade_out_handle->property_y1() = handle_pos;
-               fade_out_handle->property_y2() = handle_pos + handle_height;
+               fade_out_handle->property_y2() = handle_pos + handle_size;
        }
 }
 
@@ -514,25 +507,31 @@ AudioRegionView::set_height (gdouble height)
                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) - 2);
        }
 
-       manage_zero_line ();
        reset_fade_shapes ();
-       
+
        /* Update hights for any active feature lines */
-       list<std::pair<framepos_t, ArdourCanvas::SimpleLine*> >::iterator l;
+       list<std::pair<framepos_t, ArdourCanvas::Line*> >::iterator l;
 
        for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
-               (*l).second->property_y2() = _height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 1;
-       }       
+
+               float pos_x = trackview.editor().frame_to_pixel((*l).first);
+
+               ArdourCanvas::Points points;
+
+               points.push_back(Gnome::Art::Point(pos_x, 2.0)); // first x-coord needs to be a non-normal value
+               points.push_back(Gnome::Art::Point(pos_x, _height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 1));
+
+               (*l).second->property_points() = points;
+       }
 
        if (fade_position_line) {
+
                if (height < NAME_HIGHLIGHT_THRESH) {
                        fade_position_line->property_y2() = _height - 1;
                }
@@ -546,23 +545,6 @@ AudioRegionView::set_height (gdouble height)
        }
 }
 
-void
-AudioRegionView::manage_zero_line ()
-{
-       if (!zero_line) {
-               return;
-       }
-
-       if (_height >= 100) {
-               double const 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();
-       }
-}
-
 void
 AudioRegionView::reset_fade_shapes ()
 {
@@ -573,23 +555,46 @@ AudioRegionView::reset_fade_shapes ()
 void
 AudioRegionView::reset_fade_in_shape ()
 {
-       reset_fade_in_shape_width ((nframes_t) audio_region()->fade_in()->back()->when);
+       reset_fade_in_shape_width ((framecnt_t) audio_region()->fade_in()->back()->when);
 }
 
 void
-AudioRegionView::reset_fade_in_shape_width (nframes_t width)
+AudioRegionView::reset_fade_in_shape_width (framecnt_t width)
 {
+       if (dragging()) {
+               return;
+       }
+
+       if (audio_region()->fade_in_is_xfade()) {
+               if (fade_in_handle) {
+                       fade_in_handle->hide ();
+                       fade_in_shape->hide ();
+               }
+               redraw_start_xfade ();
+               return;
+       } else {
+               if (start_xfade_in) {
+                       start_xfade_in->hide ();
+                       start_xfade_out->hide ();
+                       start_xfade_rect->hide ();
+                       _start_xfade_visible = false;
+               }
+       }
+
        if (fade_in_handle == 0) {
                return;
        }
 
+       fade_in_handle->show ();
+
        /* smallest size for a fade is 64 frames */
 
-       width = std::max ((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 / samples_per_unit);
        uint32_t npoints = std::min (gdk_screen_width(), (int) pwidth);
        double h;
 
@@ -599,17 +604,11 @@ AudioRegionView::reset_fade_in_shape_width (nframes_t width)
                return;
        }
 
-       double handle_center;
-       handle_center = pwidth;
-
-       if (handle_center > 7.0) {
-               handle_center -= 2.0;
-       } else {
-               handle_center = 3.0;
-       }
+       double const handle_center = pwidth;
 
-       fade_in_handle->property_x1() =  handle_center - 3.0;
-       fade_in_handle->property_x2() =  handle_center + 3.0;
+       /* Put the fade in handle so that its left side is at the end-of-fade line */
+       fade_in_handle->property_x1() = handle_center;
+       fade_in_handle->property_x2() = handle_center + handle_size;
 
        if (pwidth < 5) {
                fade_in_shape->hide();
@@ -665,22 +664,47 @@ AudioRegionView::reset_fade_in_shape_width (nframes_t width)
 void
 AudioRegionView::reset_fade_out_shape ()
 {
-       reset_fade_out_shape_width ((nframes_t) audio_region()->fade_out()->back()->when);
+       reset_fade_out_shape_width ((framecnt_t) audio_region()->fade_out()->back()->when);
 }
 
 void
-AudioRegionView::reset_fade_out_shape_width (nframes_t width)
+AudioRegionView::reset_fade_out_shape_width (framecnt_t width)
 {
+       if (dragging() && audio_region()->fade_out_is_xfade()) {
+               /* we hide xfades while dragging regions */
+               return;
+       }
+
+       if (audio_region()->fade_out_is_xfade()) {
+               if (fade_out_handle) {
+                       fade_out_handle->hide ();
+                       fade_out_shape->hide ();
+               }
+               redraw_end_xfade ();
+               return;
+       } else {
+               if (end_xfade_in) {
+                       end_xfade_in->hide ();
+                       end_xfade_out->hide ();
+                       end_xfade_rect->hide ();
+                       _end_xfade_visible = false;
+               }
+       }
+
        if (fade_out_handle == 0) {
                return;
        }
 
+       fade_out_handle->show ();
+
        /* smallest size for a fade is 64 frames */
 
-       width = std::max ((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 / samples_per_unit);
        uint32_t npoints = std::min (gdk_screen_width(), (int) pwidth);
        double h;
 
@@ -690,17 +714,13 @@ AudioRegionView::reset_fade_out_shape_width (nframes_t width)
                return;
        }
 
-       double handle_center;
-       handle_center = (_region->length() - width) / samples_per_unit;
-
-       if (handle_center > 7.0) {
-               handle_center -= 2.0;
-       } else {
-               handle_center = 3.0;
-       }
+       double const handle_center = (_region->length() - width) / samples_per_unit;
 
-       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->property_x1() = handle_center - 5;
+       fade_out_handle->property_x2() = handle_center + 1;
 
        /* don't show shape if its too small */
 
@@ -760,8 +780,8 @@ AudioRegionView::set_samples_per_unit (gdouble spu)
 {
        RegionView::set_samples_per_unit (spu);
 
-       if (_flags & WaveformVisible) {
-               for (uint32_t n=0; n < waves.size(); ++n) {
+       if (Config->get_show_waveforms ()) {
+               for (uint32_t n = 0; n < waves.size(); ++n) {
                        waves[n]->property_samples_per_unit() = spu;
                }
        }
@@ -813,25 +833,20 @@ AudioRegionView::set_colors ()
 }
 
 void
-AudioRegionView::set_waveform_visible (bool yn)
-{
-       if (((_flags & WaveformVisible) != yn)) {
-               if (yn) {
-                       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.
-                               */
-                               waves[n]->property_samples_per_unit() = samples_per_unit;
-                               waves[n]->show();
-                       }
-                       _flags |= WaveformVisible;
-               } else {
-                       for (uint32_t n=0; n < waves.size(); ++n) {
-                               waves[n]->hide();
-                       }
-                       _flags &= ~WaveformVisible;
+AudioRegionView::setup_waveform_visibility ()
+{
+       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.
+                       */
+                       waves[n]->property_samples_per_unit() = samples_per_unit;
+                       waves[n]->show();
+               }
+       } else {
+               for (uint32_t n = 0; n < waves.size(); ++n) {
+                       waves[n]->hide();
                }
-               store_flags ();
        }
 }
 
@@ -846,23 +861,20 @@ 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 ();
        }
 }
 
@@ -967,11 +979,12 @@ AudioRegionView::create_one_wave (uint32_t which, bool /*direct*/)
 
        wave->property_clip_color() = ARDOUR_UI::config()->canvasvar_WaveFormClip.get();
        wave->property_zero_color() = ARDOUR_UI::config()->canvasvar_ZeroLine.get();
+       wave->property_zero_line() = true;
        wave->property_region_start() = _region->start();
-       wave->property_rectified() = (bool) (_flags & WaveformRectified);
-       wave->property_logscaled() = (bool) (_flags & WaveformLogScaled);
+       wave->property_rectified() = Config->get_waveform_shape() == Rectified;
+       wave->property_logscaled() = Config->get_waveform_scale() == Logarithmic;
 
-       if (!(_flags & WaveformVisible)) {
+       if (!Config->get_show_waveforms ()) {
                wave->hide();
        }
 
@@ -1005,16 +1018,6 @@ AudioRegionView::create_one_wave (uint32_t which, bool /*direct*/)
                /* all waves created, don't hook into peaks ready anymore */
                delete _data_ready_connections[which];
                _data_ready_connections[which] = 0;
-
-#if 0
-               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) ARDOUR_UI::config()->canvasvar_ZeroLine.get();
-                       manage_zero_line ();
-               }
-#endif
        }
 }
 
@@ -1028,7 +1031,7 @@ AudioRegionView::peaks_ready_handler (uint32_t which)
 void
 AudioRegionView::add_gain_point_event (ArdourCanvas::Item *item, GdkEvent *ev)
 {
-       if (gain_line == 0) {
+       if (!gain_line) {
                return;
        }
 
@@ -1036,14 +1039,14 @@ 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);
 
-       nframes_t fx = trackview.editor().pixel_to_frame (x);
+       framepos_t fx = trackview.editor().pixel_to_frame (x);
 
        if (fx > _region->length()) {
                return;
@@ -1057,9 +1060,9 @@ AudioRegionView::add_gain_point_event (ArdourCanvas::Item *item, GdkEvent *ev)
 
        gain_line->view_to_model_coord (x, y);
 
-        /* XXX STATEFUL: can't convert to stateful diff until we 
-           can represent automation data with it.
-        */
+       /* 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();
@@ -1086,105 +1089,18 @@ AudioRegionView::remove_gain_point_event (ArdourCanvas::Item *item, GdkEvent */*
 }
 
 void
-AudioRegionView::store_flags()
-{
-       XMLNode *node = new XMLNode ("GUI");
-
-       node->add_property ("waveform-visible", (_flags & WaveformVisible) ? "yes" : "no");
-       node->add_property ("envelope-visible", (_flags & EnvelopeVisible) ? "yes" : "no");
-       node->add_property ("waveform-rectified", (_flags & WaveformRectified) ? "yes" : "no");
-       node->add_property ("waveform-logscaled", (_flags & WaveformLogScaled) ? "yes" : "no");
-
-       _region->add_extra_xml (*node);
-}
-
-void
-AudioRegionView::set_flags (XMLNode* node)
+AudioRegionView::setup_waveform_shape ()
 {
-       XMLProperty *prop;
-
-       if ((prop = node->property ("waveform-visible")) != 0) {
-               if (string_is_affirmative (prop->value())) {
-                       _flags |= WaveformVisible;
-               }
-       }
-
-       if ((prop = node->property ("envelope-visible")) != 0) {
-               if (string_is_affirmative (prop->value())) {
-                       _flags |= EnvelopeVisible;
-               }
-       }
-
-       if ((prop = node->property ("waveform-rectified")) != 0) {
-               if (string_is_affirmative (prop->value())) {
-                       _flags |= WaveformRectified;
-               }
-       }
-
-       if ((prop = node->property ("waveform-logscaled")) != 0) {
-               if (string_is_affirmative (prop->value())) {
-                       _flags |= WaveformLogScaled;
-               }
+       for (vector<WaveView *>::iterator wave = waves.begin(); wave != waves.end() ; ++wave) {
+               (*wave)->property_rectified() = Config->get_waveform_shape() == Rectified;
        }
 }
 
 void
-AudioRegionView::set_waveform_shape (WaveformShape shape)
+AudioRegionView::setup_waveform_scale ()
 {
-       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;
-               }
-               store_flags ();
-       }
-}
-
-void
-AudioRegionView::set_waveform_scale (WaveformScale scale)
-{
-       bool yn = (scale == Logarithmic);
-
-       if (yn != (bool) (_flags & WaveformLogScaled)) {
-               for (vector<WaveView *>::iterator wave = waves.begin(); wave != waves.end() ; ++wave) {
-                       (*wave)->property_logscaled() = yn;
-               }
-
-               if (yn) {
-                       _flags |= WaveformLogScaled;
-               } else {
-                       _flags &= ~WaveformLogScaled;
-               }
-               store_flags ();
+       for (vector<WaveView *>::iterator wave = waves.begin(); wave != waves.end() ; ++wave) {
+               (*wave)->property_logscaled() = Config->get_waveform_scale() == Logarithmic;
        }
 }
 
@@ -1236,15 +1152,17 @@ AudioRegionView::add_ghost (TimeAxisView& tv)
 void
 AudioRegionView::entered (bool internal_editing)
 {
-        trackview.editor().set_current_trimmable (_region);
-        trackview.editor().set_current_movable (_region);
-
-       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);
        }
 
        if (fade_in_handle && !internal_editing) {
+               fade_in_handle->property_outline_color_rgba() = RGBA_TO_UINT (0, 0, 0, 255);
                fade_in_handle->property_fill_color_rgba() = UINT_RGBA_CHANGE_A (fade_color, 255);
+               fade_out_handle->property_outline_color_rgba() = RGBA_TO_UINT (0, 0, 0, 255);
                fade_out_handle->property_fill_color_rgba() = UINT_RGBA_CHANGE_A (fade_color, 255);
        }
 }
@@ -1252,15 +1170,17 @@ AudioRegionView::entered (bool internal_editing)
 void
 AudioRegionView::exited ()
 {
-        trackview.editor().set_current_trimmable (boost::shared_ptr<Trimmable>());
-        trackview.editor().set_current_movable (boost::shared_ptr<Movable>());
+       trackview.editor().set_current_trimmable (boost::shared_ptr<Trimmable>());
+       trackview.editor().set_current_movable (boost::shared_ptr<Movable>());
 
-       if (gain_line) {
-               gain_line->hide_all_but_selected_control_points ();
+       if (gain_line && trackview.editor().current_mouse_mode() == Editing::MouseGain) {
+               gain_line->remove_visibility (AutomationLine::ControlPoints);
        }
 
        if (fade_in_handle) {
+               fade_in_handle->property_outline_color_rgba() = RGBA_TO_UINT (0, 0, 0, 0);
                fade_in_handle->property_fill_color_rgba() = UINT_RGBA_CHANGE_A (fade_color, 0);
+               fade_out_handle->property_outline_color_rgba() = RGBA_TO_UINT (0, 0, 0, 0);
                fade_out_handle->property_fill_color_rgba() = UINT_RGBA_CHANGE_A (fade_color, 0);
        }
 }
@@ -1325,50 +1245,44 @@ AudioRegionView::set_frame_color ()
                fill_opacity = 0;
        }
 
-       if (_selected && should_show_selection) {
-               if (fill_opacity) {
-                       frame->property_fill_color_rgba() = UINT_RGBA_CHANGE_A (ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get(), fill_opacity);
-               } else {
-                       frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
-               }
+       TimeAxisViewItem::set_frame_color ();
 
-               for (vector<ArdourCanvas::WaveView*>::iterator w = waves.begin(); w != waves.end(); ++w) {
-                       if (_region->muted()) {
-                               (*w)->property_wave_color() = UINT_RGBA_CHANGE_A(ARDOUR_UI::config()->canvasvar_SelectedWaveForm.get(), MUTED_ALPHA);
-                       } else {
-                               (*w)->property_wave_color() = ARDOUR_UI::config()->canvasvar_SelectedWaveForm.get();
-                               (*w)->property_fill_color() = ARDOUR_UI::config()->canvasvar_SelectedWaveFormFill.get();
-                       }
-               }
+        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) {
-                       frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
-
-                       for (vector<ArdourCanvas::WaveView*>::iterator w = waves.begin(); w != waves.end(); ++w) {
-                               if (_region->muted()) {
-                                       (*w)->property_wave_color() = UINT_RGBA_CHANGE_A(ARDOUR_UI::config()->canvasvar_RecWaveForm.get(), MUTED_ALPHA);
-                               } else {
-                                       (*w)->property_wave_color() = ARDOUR_UI::config()->canvasvar_RecWaveForm.get();
-                                       (*w)->property_fill_color() = ARDOUR_UI::config()->canvasvar_RecWaveFormFill.get();
-                               }
-                       }
+                        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 (fill_opacity) {
-                               frame->property_fill_color_rgba() = UINT_RGBA_CHANGE_A (ARDOUR_UI::config()->canvasvar_FrameBase.get(), fill_opacity);
-                       } else {
-                               frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_FrameBase.get();
-                       }
-
-                       for (vector<ArdourCanvas::WaveView*>::iterator w = waves.begin(); w != waves.end(); ++w) {
-                               if (_region->muted()) {
-                                       (*w)->property_wave_color() = UINT_RGBA_CHANGE_A(ARDOUR_UI::config()->canvasvar_WaveForm.get(), MUTED_ALPHA);
-                               } else {
-                                       (*w)->property_wave_color() = ARDOUR_UI::config()->canvasvar_WaveForm.get();
-                                       (*w)->property_fill_color() = ARDOUR_UI::config()->canvasvar_WaveFormFill.get();
-                               }
-                       }
+                        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) {
+                if (_region->muted()) {
+                        (*w)->property_wave_color() = wc;
+                } else {
+                        (*w)->property_wave_color() = wc;
+                        (*w)->property_fill_color() = fc;
+                }
+        }
 }
 
 void
@@ -1449,31 +1363,55 @@ AudioRegionView::transients_changed ()
        AnalysisFeatureList analysis_features = _region->transients();
 
        while (feature_lines.size() < analysis_features.size()) {
-               ArdourCanvas::SimpleLine* l = new ArdourCanvas::SimpleLine (*group);
-               l->property_color_rgba() = (guint) ARDOUR_UI::config()->canvasvar_ZeroLine.get();
-               feature_lines.push_back (make_pair(0, l));
+
+               ArdourCanvas::Line* canvas_item = new ArdourCanvas::Line(*group);
+
+               ArdourCanvas::Points points;
+
+               points.push_back(Gnome::Art::Point(-1.0, 2.0)); // first x-coord needs to be a non-normal value
+               points.push_back(Gnome::Art::Point(1.0, _height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 1));
+
+               canvas_item->property_points() = points;
+               canvas_item->property_width_pixels() = 1;
+               canvas_item->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_ZeroLine.get();
+               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->signal_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::SimpleLine *line = feature_lines.back().second;
+               ArdourCanvas::Line* line = feature_lines.back().second;
                feature_lines.pop_back ();
                delete line;
        }
 
        AnalysisFeatureList::const_iterator i;
-       list<std::pair<framepos_t, ArdourCanvas::SimpleLine*> >::iterator l;
+       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) {
+
+               ArdourCanvas::Points points;
+
+               float *pos = new float;
+               *pos = trackview.editor().frame_to_pixel (*i);
+
+               points.push_back(Gnome::Art::Point(*pos, 2.0)); // first x-coord needs to be a non-normal value
+               points.push_back(Gnome::Art::Point(*pos, _height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 1));
+
+               (*l).second->property_points() = points;
+               (*l).second->set_data ("position", pos);
+
                (*l).first = *i;
-               (*l).second->property_x1() = trackview.editor().frame_to_pixel (*i);
-               (*l).second->property_x2() = trackview.editor().frame_to_pixel (*i);            
-               (*l).second->property_y1() = 2;
-               (*l).second->property_y2() = _height - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 1;
-               (*l).second->set_data("regionview", this);
-               (*l).second->show ();
-               (*l).second->raise_to_top ();
-               
-               (*l).second->signal_event().connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_feature_line_event), (*l).second, this));
        }
 }
 
@@ -1481,17 +1419,21 @@ 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::SimpleLine*> >::iterator l;
+       list<std::pair<framepos_t, ArdourCanvas::Line*> >::iterator l;
 
        for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
-               /* Simple line x1 has been updated in drag so we compare to new_pos */
-               if (rint(new_pos) == rint((*l).second->property_x1())) {
-                   
+
+               /* 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_frame (new_pos);
 
                    _region->update_transient (old_frame, new_frame);
-                   
+
                    break;
                }
        }
@@ -1501,12 +1443,15 @@ void
 AudioRegionView::remove_transient(float pos)
 {
        /* Find frame at old pos, calulate new frame then update region transients*/
-       list<std::pair<framepos_t, ArdourCanvas::SimpleLine*> >::iterator l;
+       list<std::pair<framepos_t, ArdourCanvas::Line*> >::iterator l;
 
        for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
-               /* Simple line x1 has been updated in drag so we compare to new_pos */
-               if (rint(pos) == rint((*l).second->property_x1())) {
-                   _region->remove_transient ((*l).first);                 
+
+               /* 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;
                }
        }
@@ -1516,6 +1461,348 @@ 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;
+       }
+
+       if (!ar->fade_in_is_xfade()) {
+               if (start_xfade_in) {
+                       start_xfade_in->hide ();
+                       start_xfade_out->hide ();
+                       start_xfade_rect->hide ();
+                       _start_xfade_visible = false;
+               }
+               return;
+       }
+
+       redraw_start_xfade_to (ar, ar->fade_in()->back()->when);
+}
+
+void
+AudioRegionView::redraw_start_xfade_to (boost::shared_ptr<AudioRegion> ar, framecnt_t len)
+{
+       int32_t const npoints = trackview.editor().frame_to_pixel (len);
+
+       if (npoints < 3) {
+               return;
+       }
+
+       if (!start_xfade_in) {
+               start_xfade_in = new ArdourCanvas::Line (*group);
+               start_xfade_in->property_width_pixels() = 1;
+               start_xfade_in->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_GainLine.get();
+       }
+
+       if (!start_xfade_out) {
+               start_xfade_out = new ArdourCanvas::Line (*group);
+               start_xfade_out->property_width_pixels() = 1;
+               uint32_t col = UINT_RGBA_CHANGE_A (ARDOUR_UI::config()->canvasvar_GainLine.get(), 125);
+               start_xfade_out->property_fill_color_rgba() = col;
+       }
+
+       if (!start_xfade_rect) {
+               start_xfade_rect = new ArdourCanvas::SimpleRect (*group);
+               start_xfade_rect->property_draw() = true;
+               start_xfade_rect->property_fill() = true;;
+               start_xfade_rect->property_fill_color_rgba() =  ARDOUR_UI::config()->canvasvar_ActiveCrossfade.get();
+               start_xfade_rect->property_outline_pixels() = 0;
+               start_xfade_rect->signal_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);
+       }
+
+       Points* points = get_canvas_points ("xfade edit redraw", npoints);
+       boost::scoped_ptr<float> vec (new float[npoints]);
+       double effective_height = _height - NAME_HIGHLIGHT_SIZE - 1.0;
+
+       ar->fade_in()->curve().get_vector (0, ar->fade_in()->back()->when, vec.get(), npoints);
+
+       for (int i = 0, pci = 0; i < npoints; ++i) {
+               Gnome::Art::Point &p ((*points)[pci++]);
+               p.set_x (i);
+               p.set_y (1.0 + effective_height - (effective_height * vec.get()[i]));
+       }
+
+       start_xfade_rect->property_x1() = ((*points)[0]).get_x();
+       start_xfade_rect->property_y1() = 1.0;
+       start_xfade_rect->property_x2() = ((*points)[npoints-1]).get_x();
+       start_xfade_rect->property_y2() = effective_height;
+       start_xfade_rect->show ();
+       start_xfade_rect->raise_to_top ();
+
+       start_xfade_in->property_points() = *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) {
+                       Gnome::Art::Point &p ((*points)[pci++]);
+                       p.set_x (i);
+                       p.set_y (1.0 + effective_height - (effective_height * (1.0 - vec.get()[i])));
+               }
+
+       } else {
+
+               inverse->curve().get_vector (0, inverse->back()->when, vec.get(), npoints);
+
+               for (int i = 0, pci = 0; i < npoints; ++i) {
+                       Gnome::Art::Point &p ((*points)[pci++]);
+                       p.set_x (i);
+                       p.set_y (1.0 + effective_height - (effective_height * vec.get()[i]));
+               }
+       }
+
+       start_xfade_out->property_points() = *points;
+       start_xfade_out->show ();
+       start_xfade_out->raise_to_top ();
+
+       _start_xfade_visible = true;
+
+       delete points;
+}
+
+void
+AudioRegionView::redraw_end_xfade ()
+{
+       boost::shared_ptr<AudioRegion> ar (audio_region());
+
+       if (!ar->fade_out() || ar->fade_out()->empty()) {
+               return;
+       }
+
+       if (!ar->fade_out_is_xfade()) {
+               if (end_xfade_in) {
+                       end_xfade_in->hide ();
+                       end_xfade_out->hide ();
+                       end_xfade_rect->hide ();
+                       _end_xfade_visible = false;
+               }
+               return;
+       }
+
+       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().frame_to_pixel (len);
+
+       if (npoints < 3) {
+               return;
+       }
+
+       if (!end_xfade_in) {
+               end_xfade_in = new ArdourCanvas::Line (*group);
+               end_xfade_in->property_width_pixels() = 1;
+               end_xfade_in->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_GainLine.get();
+       }
+
+       if (!end_xfade_out) {
+               end_xfade_out = new ArdourCanvas::Line (*group);
+               end_xfade_out->property_width_pixels() = 1;
+               uint32_t col UINT_RGBA_CHANGE_A (ARDOUR_UI::config()->canvasvar_GainLine.get(), 125);
+               end_xfade_out->property_fill_color_rgba() = col;
+       }
+
+       if (!end_xfade_rect) {
+               end_xfade_rect = new ArdourCanvas::SimpleRect (*group);
+               end_xfade_rect->property_draw() = true;
+               end_xfade_rect->property_fill() = true;;
+               end_xfade_rect->property_fill_color_rgba() =  ARDOUR_UI::config()->canvasvar_ActiveCrossfade.get();
+               end_xfade_rect->property_outline_pixels() = 0;
+               end_xfade_rect->signal_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_ptr<float> vec (new float[npoints]);
+
+       ar->fade_out()->curve().get_vector (0, ar->fade_out()->back()->when, vec.get(), npoints);
+
+       double rend = trackview.editor().frame_to_pixel (_region->length() - len);
+       double effective_height = _height - NAME_HIGHLIGHT_SIZE - 1;
+
+       for (int i = 0, pci = 0; i < npoints; ++i) {
+               Gnome::Art::Point &p ((*points)[pci++]);
+               p.set_x (rend + i);
+               p.set_y (1.0 + effective_height - (effective_height * vec.get()[i]));
+       }
+
+       end_xfade_rect->property_x1() = ((*points)[0]).get_x();
+       end_xfade_rect->property_y1() = 1;
+       end_xfade_rect->property_x2() = ((*points)[npoints-1]).get_x();
+       end_xfade_rect->property_y2() = effective_height;
+       end_xfade_rect->show ();
+       end_xfade_rect->raise_to_top ();
+
+       end_xfade_in->property_points() = *points;
+       end_xfade_in->show ();
+       end_xfade_in->raise_to_top ();
+
+       /* fade in line */
+
+       boost::shared_ptr<AutomationList> inverse = ar->inverse_fade_out ();
+
+       if (!inverse) {
+
+               for (int i = 0, pci = 0; i < npoints; ++i) {
+                       Gnome::Art::Point &p ((*points)[pci++]);
+                       p.set_x (rend + i);
+                       p.set_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) {
+                       Gnome::Art::Point &p ((*points)[pci++]);
+                       p.set_x (rend + i);
+                       p.set_y (1.0 + effective_height - (effective_height * vec.get()[i]));
+               }
+       }
+
+       end_xfade_out->property_points() = *points;
+       end_xfade_out->show ();
+       end_xfade_out->raise_to_top ();
+
+       _end_xfade_visible = true;
+
+       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 ();
+       AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&trackview);
+
+       if (atav) {
+               AudioStreamView* av = atav->audio_view();
+               if (av) {
+                       /* this will hide our xfades too */
+                       _hidden_xfades = av->hide_xfades_with (audio_region());
+               }
+       }
+}
+
+void
+AudioRegionView::drag_end ()
+{
+       TimeAxisViewItem::drag_end ();
+
+       for (list<AudioRegionView*>::iterator i = _hidden_xfades.first.begin(); i != _hidden_xfades.first.end(); ++i) {
+               (*i)->show_start_xfade ();
+       }
+
+       for (list<AudioRegionView*>::iterator i = _hidden_xfades.second.begin(); i != _hidden_xfades.second.end(); ++i) {
+               (*i)->show_end_xfade ();
+       }
+       
+       _hidden_xfades.first.clear ();
+       _hidden_xfades.second.clear ();
+}
+
+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 ();
+       }
 }