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route_time_axis.cc

/*
    Copyright (C) 2006 Paul Davis 

    This program is free software; you can redistribute 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.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include <cstdlib>
#include <cmath>
#include <cassert>

#include <algorithm>
#include <string>
#include <vector>

#include <sigc++/bind.h>

#include <pbd/error.h>
#include <pbd/stl_delete.h>
#include <pbd/whitespace.h>
#include <pbd/memento_command.h>

#include <gtkmm/menu.h>
#include <gtkmm/menuitem.h>
#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/selector.h>
#include <gtkmm2ext/stop_signal.h>
#include <gtkmm2ext/bindable_button.h>
#include <gtkmm2ext/utils.h>

#include <ardour/playlist.h>
#include <ardour/audioplaylist.h>
#include <ardour/diskstream.h>
#include <ardour/insert.h>
#include <ardour/ladspa_plugin.h>
#include <ardour/location.h>
#include <ardour/panner.h>
#include <ardour/playlist.h>
#include <ardour/session.h>
#include <ardour/session_playlist.h>
#include <ardour/utils.h>
#include <ardour/profile.h>

#include "ardour_ui.h"
#include "route_time_axis.h"
#include "automation_time_axis.h"
#include "redirect_automation_time_axis.h"
#include "redirect_automation_line.h"
#include "canvas_impl.h"
#include "crossfade_view.h"
#include "enums.h"
#include "gui_thread.h"
#include "keyboard.h"
#include "playlist_selector.h"
#include "point_selection.h"
#include "prompter.h"
#include "public_editor.h"
#include "region_view.h"
#include "rgb_macros.h"
#include "selection.h"
#include "simplerect.h"
#include "streamview.h"
#include "utils.h"

#include <ardour/track.h>

#include "i18n.h"

using namespace ARDOUR;
using namespace PBD;
using namespace Gtkmm2ext;
using namespace Gtk;
using namespace Editing;
using namespace std;

Glib::RefPtr<Gdk::Pixbuf> RouteTimeAxisView::slider;

void
RouteTimeAxisView::setup_slider_pix ()
{
      if ((slider = ::get_icon ("fader_belt_h")) == 0) {
            throw failed_constructor ();
      }
}

RouteTimeAxisView::RouteTimeAxisView (PublicEditor& ed, Session& sess, boost::shared_ptr<Route> rt, Canvas& canvas)
      : AxisView(sess),
        RouteUI(rt, sess, _("m"), _("s"), _("r")), // mute, solo, and record
        TimeAxisView(sess,ed,(TimeAxisView*) 0, canvas),
        parent_canvas (canvas),
        button_table (3, 3),
        edit_group_button (_("g")), // group
        playlist_button (_("p")), 
        size_button (_("h")), // height
        automation_button (_("a")),
        visual_button (_("v")),
        gm (sess, slider, true)
{
      gm.set_io (rt);
      gm.get_level_meter().set_no_show_all();
      gm.get_level_meter().setup_meters(50);

      _has_state = true;
      playlist_menu = 0;
      playlist_action_menu = 0;
      automation_action_menu = 0;
      _view = 0;
      timestretch_rect = 0;
      no_redraw = false;
      destructive_track_mode_item = 0;
      normal_track_mode_item = 0;

      ignore_toggle = false;

      edit_group_button.set_name ("TrackGroupButton");
      playlist_button.set_name ("TrackPlaylistButton");
      automation_button.set_name ("TrackAutomationButton");
      size_button.set_name ("TrackSizeButton");
      visual_button.set_name ("TrackVisualButton");
      hide_button.set_name ("TrackRemoveButton");

      edit_group_button.unset_flags (Gtk::CAN_FOCUS);
      playlist_button.unset_flags (Gtk::CAN_FOCUS);
      automation_button.unset_flags (Gtk::CAN_FOCUS);
      size_button.unset_flags (Gtk::CAN_FOCUS);
      visual_button.unset_flags (Gtk::CAN_FOCUS);
      hide_button.unset_flags (Gtk::CAN_FOCUS);

      hide_button.add (*(manage (new Image (::get_icon("hide")))));
      hide_button.show_all ();

      edit_group_button.signal_button_release_event().connect (mem_fun(*this, &RouteTimeAxisView::edit_click), false);
      playlist_button.signal_clicked().connect (mem_fun(*this, &RouteTimeAxisView::playlist_click));
      automation_button.signal_clicked().connect (mem_fun(*this, &RouteTimeAxisView::automation_click));
      size_button.signal_button_release_event().connect (mem_fun(*this, &RouteTimeAxisView::size_click), false);
      visual_button.signal_clicked().connect (mem_fun(*this, &RouteTimeAxisView::visual_click));
      hide_button.signal_clicked().connect (mem_fun(*this, &RouteTimeAxisView::hide_click));

      solo_button->signal_button_press_event().connect (mem_fun(*this, &RouteUI::solo_press), false);
      solo_button->signal_button_release_event().connect (mem_fun(*this, &RouteUI::solo_release), false);
      mute_button->signal_button_press_event().connect (mem_fun(*this, &RouteUI::mute_press), false);
      mute_button->signal_button_release_event().connect (mem_fun(*this, &RouteUI::mute_release), false);

      if (is_track()) {

            /* use icon */

            rec_enable_button->remove ();
            switch (track()->mode()) {
            case ARDOUR::Normal:
                  rec_enable_button->add (*(manage (new Image (::get_icon (X_("record_normal_red"))))));
                  break;
            case ARDOUR::Destructive:
                  rec_enable_button->add (*(manage (new Image (::get_icon (X_("record_tape_red"))))));
                  break;
            }
            rec_enable_button->show_all ();

            rec_enable_button->signal_button_press_event().connect (mem_fun(*this, &RouteUI::rec_enable_press), false);
            rec_enable_button->signal_button_release_event().connect (mem_fun(*this, &RouteUI::rec_enable_release));
            controls_table.attach (*rec_enable_button, 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
            ARDOUR_UI::instance()->tooltips().set_tip(*rec_enable_button, _("Record"));

      }

      controls_hbox.pack_start(gm.get_level_meter(), false, false);
      _route->meter_change.connect (mem_fun(*this, &RouteTimeAxisView::meter_changed));
      _route->input_changed.connect (mem_fun(*this, &RouteTimeAxisView::io_changed));
      _route->output_changed.connect (mem_fun(*this, &RouteTimeAxisView::io_changed));

      controls_table.attach (*mute_button, 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
      controls_table.attach (*solo_button, 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);

      controls_table.attach (edit_group_button, 7, 8, 1, 2, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
      controls_table.attach (gm.get_gain_slider(), 0, 5, 1, 2, Gtk::SHRINK, Gtk::SHRINK, 0, 0);

      ARDOUR_UI::instance()->tooltips().set_tip(*solo_button,_("Solo"));
      ARDOUR_UI::instance()->tooltips().set_tip(*mute_button,_("Mute"));
      ARDOUR_UI::instance()->tooltips().set_tip(edit_group_button,_("Edit Group"));
      ARDOUR_UI::instance()->tooltips().set_tip(size_button,_("Display Height"));
      ARDOUR_UI::instance()->tooltips().set_tip(playlist_button,_("Playlist"));
      ARDOUR_UI::instance()->tooltips().set_tip(automation_button, _("Automation"));
      ARDOUR_UI::instance()->tooltips().set_tip(visual_button, _("Visual options"));
      ARDOUR_UI::instance()->tooltips().set_tip(hide_button, _("Hide this track"));
      
      label_view ();

      if (0) {

            /* old school - when we used to put an extra row of buttons in place */

            controls_table.attach (hide_button, 0, 1, 1, 2, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
            controls_table.attach (visual_button, 1, 2, 1, 2, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
            controls_table.attach (size_button, 2, 3, 1, 2, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
            controls_table.attach (automation_button, 3, 4, 1, 2, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);

      } else {

            controls_table.attach (automation_button, 6, 7, 1, 2, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
      }

      if (is_track() && track()->mode() == ARDOUR::Normal) {
            controls_table.attach (playlist_button, 5, 6, 1, 2, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
      }

      y_position = -1;

      _route->redirects_changed.connect (mem_fun(*this, &RouteTimeAxisView::redirects_changed));
      _route->name_changed.connect (mem_fun(*this, &RouteTimeAxisView::route_name_changed));

      if (is_track()) {

            track()->TrackModeChanged.connect (mem_fun(*this, &RouteTimeAxisView::track_mode_changed));
            track()->FreezeChange.connect (mem_fun(*this, &RouteTimeAxisView::map_frozen));
            track()->DiskstreamChanged.connect (mem_fun(*this, &RouteTimeAxisView::diskstream_changed));
            get_diskstream()->SpeedChanged.connect (mem_fun(*this, &RouteTimeAxisView::speed_changed));

            /* pick up the correct freeze state */
            map_frozen ();

      }

      editor.ZoomChanged.connect (mem_fun(*this, &RouteTimeAxisView::reset_samples_per_unit));
      ColorsChanged.connect (mem_fun (*this, &RouteTimeAxisView::color_handler));

      gm.get_gain_slider().signal_scroll_event().connect(mem_fun(*this, &RouteTimeAxisView::controls_ebox_scroll), false);
      gm.get_gain_slider().set_name ("TrackGainFader");
}

RouteTimeAxisView::~RouteTimeAxisView ()
{
      GoingAway (); /* EMIT_SIGNAL */

      vector_delete (&redirect_automation_curves);

      for (list<RedirectAutomationInfo*>::iterator i = redirect_automation.begin(); i != redirect_automation.end(); ++i) {
            delete *i;
      }

      if (playlist_menu) {
            delete playlist_menu;
            playlist_menu = 0;
      }
  
      if (playlist_action_menu) {
            delete playlist_action_menu;
            playlist_action_menu = 0;
      }

      if (_view) {
            delete _view;
            _view = 0;
      }
}

void
RouteTimeAxisView::post_construct ()
{
      /* map current state of the route */

      update_diskstream_display ();
      subplugin_menu.items().clear ();
      _route->foreach_redirect (this, &RouteTimeAxisView::add_redirect_to_subplugin_menu);
      _route->foreach_redirect (this, &RouteTimeAxisView::add_existing_redirect_automation_curves);
      reset_redirect_automation_curves ();
}

void
RouteTimeAxisView::set_playlist (boost::shared_ptr<Playlist> newplaylist)
{
      boost::shared_ptr<Playlist> pl = playlist();
      assert(pl);

      modified_connection.disconnect ();
      modified_connection = pl->Modified.connect (mem_fun(*this, &RouteTimeAxisView::playlist_modified));
}

void
RouteTimeAxisView::playlist_modified ()
{
}

gint
RouteTimeAxisView::edit_click (GdkEventButton *ev)
{
      if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
              _route->set_edit_group (0, this);
            return FALSE;
      } 

      using namespace Menu_Helpers;

      MenuList& items = edit_group_menu.items ();
      RadioMenuItem::Group group;

      items.clear ();
      items.push_back (RadioMenuElem (group, _("No group"), 
                              bind (mem_fun(*this, &RouteTimeAxisView::set_edit_group_from_menu), (RouteGroup *) 0)));
      
      if (_route->edit_group() == 0) {
            static_cast<RadioMenuItem*>(&items.back())->set_active ();
      }
      
      _session.foreach_edit_group (bind (mem_fun (*this, &RouteTimeAxisView::add_edit_group_menu_item), &group));
      edit_group_menu.popup (ev->button, ev->time);

      return FALSE;
}

void
RouteTimeAxisView::add_edit_group_menu_item (RouteGroup *eg, RadioMenuItem::Group* group)
{
      using namespace Menu_Helpers;

      MenuList &items = edit_group_menu.items();

      items.push_back (RadioMenuElem (*group, eg->name(), bind (mem_fun(*this, &RouteTimeAxisView::set_edit_group_from_menu), eg)));
      if (_route->edit_group() == eg) {
            static_cast<RadioMenuItem*>(&items.back())->set_active ();
      }
}

void
RouteTimeAxisView::set_edit_group_from_menu (RouteGroup *eg)
{
      _route->set_edit_group (eg, this);
}

void
RouteTimeAxisView::playlist_changed ()
{
      label_view ();

      if (is_track()) {
            set_playlist (get_diskstream()->playlist());
      }
}

void
RouteTimeAxisView::label_view ()
{
      string x = _route->name();

      if (x != name_entry.get_text()) {
            name_entry.set_text (x);
      }

      ARDOUR_UI::instance()->tooltips().set_tip (name_entry, x);
}

void
RouteTimeAxisView::route_name_changed (void *src)
{
      editor.route_name_changed (this);
      label_view ();
}

void
RouteTimeAxisView::take_name_changed (void *src)

{
      if (src != this) {
            label_view ();
      }
}

void
RouteTimeAxisView::playlist_click ()
{
      // always build a new action menu
      
      if (playlist_action_menu != 0) {
            delete playlist_action_menu;
      } 

      playlist_action_menu = new Menu;
      playlist_action_menu->set_name ("ArdourContextMenu");
      
      build_playlist_menu (playlist_action_menu);

      conditionally_add_to_selection ();
      playlist_action_menu->popup (1, gtk_get_current_event_time());
}

void
RouteTimeAxisView::automation_click ()
{
      if (automation_action_menu == 0) {
            /* this seems odd, but the automation action
               menu is built as part of the display menu.
            */
            build_display_menu ();
      }
      conditionally_add_to_selection ();
      automation_action_menu->popup (1, gtk_get_current_event_time());
}

void
RouteTimeAxisView::build_automation_action_menu ()
{
      using namespace Menu_Helpers;

      automation_action_menu = manage (new Menu);
      MenuList& automation_items = automation_action_menu->items();
      automation_action_menu->set_name ("ArdourContextMenu");
      
      automation_items.push_back (MenuElem (_("Show all automation"),
                                    mem_fun(*this, &RouteTimeAxisView::show_all_automation)));

      automation_items.push_back (MenuElem (_("Show existing automation"),
                                    mem_fun(*this, &RouteTimeAxisView::show_existing_automation)));

      automation_items.push_back (MenuElem (_("Hide all automation"),
                                    mem_fun(*this, &RouteTimeAxisView::hide_all_automation)));

      automation_items.push_back (MenuElem (_("Plugins"), subplugin_menu));
}

void
RouteTimeAxisView::build_display_menu ()
{
      using namespace Menu_Helpers;

      /* get the size menu ready */

      build_size_menu ();

      /* prepare it */

      TimeAxisView::build_display_menu ();

      /* now fill it with our stuff */

      MenuList& items = display_menu->items();
      display_menu->set_name ("ArdourContextMenu");
      
      items.push_back (MenuElem (_("Height"), *size_menu));
      items.push_back (MenuElem (_("Color"), mem_fun(*this, &RouteTimeAxisView::select_track_color)));

      items.push_back (SeparatorElem());

      if (!Profile->get_sae()) {
            build_remote_control_menu ();
            items.push_back (MenuElem (_("Remote Control ID"), *remote_control_menu));
            build_automation_action_menu ();
            items.push_back (MenuElem (_("Automation"), *automation_action_menu));
            items.push_back (SeparatorElem());
      }

      // Hook for derived classes to add type specific stuff
      append_extra_display_menu_items ();
      items.push_back (SeparatorElem());
      
      if (is_track()) {

            Menu* alignment_menu = manage (new Menu);
            MenuList& alignment_items = alignment_menu->items();
            alignment_menu->set_name ("ArdourContextMenu");

            RadioMenuItem::Group align_group;
            
            alignment_items.push_back (RadioMenuElem (align_group, _("Align with existing material"),
                  bind (mem_fun(*this, &RouteTimeAxisView::set_align_style), ExistingMaterial)));
            align_existing_item = dynamic_cast<RadioMenuItem*>(&alignment_items.back());
            if (get_diskstream()->alignment_style() == ExistingMaterial)
                  align_existing_item->set_active();
            
            alignment_items.push_back (RadioMenuElem (align_group, _("Align with capture time"),
                  bind (mem_fun(*this, &RouteTimeAxisView::set_align_style), CaptureTime)));
            align_capture_item = dynamic_cast<RadioMenuItem*>(&alignment_items.back());
            if (get_diskstream()->alignment_style() == CaptureTime)
                  align_capture_item->set_active();
            
            if (!Profile->get_sae()) {
                  items.push_back (MenuElem (_("Alignment"), *alignment_menu));
                  get_diskstream()->AlignmentStyleChanged.connect (mem_fun(*this, &RouteTimeAxisView::align_style_changed));
                  
                  RadioMenuItem::Group mode_group;
                  items.push_back (RadioMenuElem (mode_group, _("Normal mode"),
                                          bind (mem_fun (*this, &RouteTimeAxisView::set_track_mode), ARDOUR::Normal)));
                  normal_track_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
                  items.push_back (RadioMenuElem (mode_group, _("Tape mode"),
                                          bind (mem_fun (*this, &RouteTimeAxisView::set_track_mode), ARDOUR::Destructive)));
                  destructive_track_mode_item = dynamic_cast<RadioMenuItem*>(&items.back());
                  
                  switch (track()->mode()) {
                  case ARDOUR::Destructive:
                        destructive_track_mode_item->set_active ();
                        break;
                  case ARDOUR::Normal:
                        normal_track_mode_item->set_active ();
                        break;
                  }

                  items.push_back (SeparatorElem());
            }
      }

      items.push_back (CheckMenuElem (_("Active"), mem_fun(*this, &RouteUI::toggle_route_active)));
      route_active_menu_item = dynamic_cast<CheckMenuItem *> (&items.back());
      route_active_menu_item->set_active (_route->active());

      items.push_back (SeparatorElem());
      items.push_back (MenuElem (_("Hide"), mem_fun(*this, &RouteTimeAxisView::hide_click)));
      if (!Profile->get_sae()) {
            items.push_back (MenuElem (_("Remove"), mem_fun(*this, &RouteUI::remove_this_route)));
      } else {
            items.push_front (SeparatorElem());
            items.push_front (MenuElem (_("Delete"), mem_fun(*this, &RouteUI::remove_this_route)));
      }
}

static bool __reset_item (RadioMenuItem* item)
{
      item->set_active ();
      return false;
}

void
RouteTimeAxisView::set_track_mode (TrackMode mode)
{
      RadioMenuItem* item;
      RadioMenuItem* other_item;

      switch (mode) {
      case ARDOUR::Normal:
            item = normal_track_mode_item;
            other_item = destructive_track_mode_item;
            break;
      case ARDOUR::Destructive:
            item = destructive_track_mode_item;
            other_item = normal_track_mode_item;
            break;
      default:
            fatal << string_compose (_("programming error: %1 %2"), "illegal track mode in RouteTimeAxisView::set_track_mode", mode) << endmsg;
            /*NOTREACHED*/
            return;
      }
      
      if (item && other_item && item->get_active () && track()->mode() != mode) {
            _set_track_mode (track(), mode, other_item);
      }
}

void
RouteTimeAxisView::_set_track_mode (boost::shared_ptr<Track> track, TrackMode mode, RadioMenuItem* reset_item)
{
      bool needs_bounce;

      if (!track->can_use_mode (mode, needs_bounce)) {

            if (!needs_bounce) {
                  /* cannot be done */
                  Glib::signal_idle().connect (bind (sigc::ptr_fun (__reset_item), reset_item));
                  return;
            } else {
                  cerr << "would bounce this one\n";
                  return;
            }
      }

      track->set_mode (mode);

      rec_enable_button->remove ();
      switch (mode) {
      case ARDOUR::Normal:
            rec_enable_button->add (*(manage (new Image (::get_icon (X_("record_normal_red"))))));
            break;
      case ARDOUR::Destructive:
            rec_enable_button->add (*(manage (new Image (::get_icon (X_("record_tape_red"))))));
            break;
      }
      rec_enable_button->show_all ();

}

void
RouteTimeAxisView::track_mode_changed ()
{
      RadioMenuItem* item;
      
      switch (track()->mode()) {
      case ARDOUR::Normal:
            item = normal_track_mode_item;
            break;
      case ARDOUR::Destructive:
            item = destructive_track_mode_item;
            break;
      default:
            fatal << string_compose (_("programming error: %1 %2"), "illegal track mode in RouteTimeAxisView::set_track_mode", track()->mode()) << endmsg;
            /*NOTREACHED*/
            return;
      }

      item->set_active ();
}

void
RouteTimeAxisView::show_timestretch (nframes_t start, nframes_t end)
{
      double x1;
      double x2;
      double y2;
      
      TimeAxisView::show_timestretch (start, end);

      hide_timestretch ();

#if 0 
      if (ts.empty()) {
            return;
      }


      /* check that the time selection was made in our route, or our edit group.
         remember that edit_group() == 0 implies the route is *not* in a edit group.
      */

      if (!(ts.track == this || (ts.group != 0 && ts.group == _route->edit_group()))) {
            /* this doesn't apply to us */
            return;
      }

      /* ignore it if our edit group is not active */
      
      if ((ts.track != this) && _route->edit_group() && !_route->edit_group()->is_active()) {
            return;
      }
#endif

      if (timestretch_rect == 0) {
            timestretch_rect = new SimpleRect (*canvas_display);
            timestretch_rect->property_x1() =  0.0;
            timestretch_rect->property_y1() =  0.0;
            timestretch_rect->property_x2() =  0.0;
            timestretch_rect->property_y2() =  0.0;
            timestretch_rect->property_fill_color_rgba() =  ARDOUR_UI::config()->canvasvar_TimeStretchFill.get();
            timestretch_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeStretchOutline.get();
      }

      timestretch_rect->show ();
      timestretch_rect->raise_to_top ();

      x1 = start / editor.get_current_zoom();
      x2 = (end - 1) / editor.get_current_zoom();
      y2 = current_height() - 2;
      
      timestretch_rect->property_x1() = x1;
      timestretch_rect->property_y1() = 1.0;
      timestretch_rect->property_x2() = x2;
      timestretch_rect->property_y2() = y2;
}

void
RouteTimeAxisView::hide_timestretch ()
{
      TimeAxisView::hide_timestretch ();

      if (timestretch_rect) {
            timestretch_rect->hide ();
      }
}

void
RouteTimeAxisView::show_selection (TimeSelection& ts)
{

#if 0
      /* ignore it if our edit group is not active or if the selection was started
         in some other track or edit group (remember that edit_group() == 0 means
         that the track is not in an edit group).
      */

      if (((ts.track != this && !is_child (ts.track)) && _route->edit_group() && !_route->edit_group()->is_active()) ||
          (!(ts.track == this || is_child (ts.track) || (ts.group != 0 && ts.group == _route->edit_group())))) {
            hide_selection ();
            return;
      }
#endif

      TimeAxisView::show_selection (ts);
}

void
RouteTimeAxisView::set_height (uint32_t h)
{
      int gmlen = h - 5;
      bool height_changed = (height == 0) || (h != height);
      gm.get_level_meter().setup_meters (gmlen);

      TimeAxisView::set_height (h);

      ensure_xml_node ();

      if (_view) {
            _view->set_height ((double) current_height());
      }

      char buf[32];
      snprintf (buf, sizeof (buf), "%u", height);
      xml_node->add_property ("height", buf);

      if (height >= hNormal) {
            reset_meter();
            show_name_entry ();
            hide_name_label ();

            gm.get_gain_slider().show();
            mute_button->show();
            solo_button->show();
            if (rec_enable_button)
                  rec_enable_button->show();

            edit_group_button.show();
            hide_button.show();
            visual_button.show();
            size_button.show();
            automation_button.show();
            
            if (is_track() && track()->mode() == ARDOUR::Normal) {
                  playlist_button.show();
            }

      } else if (height >= hSmaller) {

            reset_meter();
            show_name_entry ();
            hide_name_label ();

            gm.get_gain_slider().hide();
            mute_button->show();
            solo_button->show();
            if (rec_enable_button)
                  rec_enable_button->show();

            edit_group_button.hide ();
            hide_button.hide ();
            visual_button.hide ();
            size_button.hide ();
            automation_button.hide ();
            
            if (is_track() && track()->mode() == ARDOUR::Normal) {
                  playlist_button.hide ();
            }

      } else {

            hide_meter ();

            /* don't allow name_entry to be hidden while
               it has focus, otherwise the GUI becomes unusable.
            */

            if (name_entry.has_focus()) {
                  if (name_entry.get_text() != _route->name()) {
                        name_entry_changed ();
                  }
                  controls_ebox.grab_focus ();
            }

            hide_name_entry ();
            show_name_label ();
            
            gm.get_gain_slider().hide();
            mute_button->hide();
            solo_button->hide();
            if (rec_enable_button)
                  rec_enable_button->hide();

            edit_group_button.hide ();
            hide_button.hide ();
            visual_button.hide ();
            size_button.hide ();
            automation_button.hide ();
            playlist_button.hide ();
            name_label.set_text (_route->name());
      }

      if (height_changed) {
            /* only emit the signal if the height really changed */
             _route->gui_changed ("track_height", (void *) 0); /* EMIT_SIGNAL */
      }
}

void
RouteTimeAxisView::select_track_color ()
{
      if (RouteUI::choose_color ()) {

            if (_view) {
                  _view->apply_color (_color, StreamView::RegionColor);
            }
      }
}

void
RouteTimeAxisView::reset_samples_per_unit ()
{
      set_samples_per_unit (editor.get_current_zoom());
}

void
RouteTimeAxisView::set_samples_per_unit (double spu)
{
      double speed = 1.0;

      if (get_diskstream() != 0) {
            speed = get_diskstream()->speed();
      }
      
      if (_view) {
            _view->set_samples_per_unit (spu * speed);
      }

      TimeAxisView::set_samples_per_unit (spu * speed);
}

void
RouteTimeAxisView::align_style_changed ()
{
      switch (get_diskstream()->alignment_style()) {
      case ExistingMaterial:
            if (!align_existing_item->get_active()) {
                  align_existing_item->set_active();
            }
            break;
      case CaptureTime:
            if (!align_capture_item->get_active()) {
                  align_capture_item->set_active();
            }
            break;
      }
}

void
RouteTimeAxisView::set_align_style (AlignStyle style)
{
      RadioMenuItem* item;

      switch (style) {
      case ExistingMaterial:
            item = align_existing_item;
            break;
      case CaptureTime:
            item = align_capture_item;
            break;
      default:
            fatal << string_compose (_("programming error: %1 %2"), "illegal align style in RouteTimeAxisView::set_align_style", style) << endmsg;
            /*NOTREACHED*/
            return;
      }

      if (item->get_active()) {
            get_diskstream()->set_align_style (style);
      }
}

void
RouteTimeAxisView::rename_current_playlist ()
{
      ArdourPrompter prompter (true);
      string name;

      boost::shared_ptr<Diskstream> ds = get_diskstream();
      if (!ds || ds->destructive())
            return;

      boost::shared_ptr<Playlist> pl = ds->playlist();
      if (!pl)
            return;

      prompter.set_prompt (_("Name for playlist"));
      prompter.set_initial_text (pl->name());
      prompter.add_button (_("Rename"), Gtk::RESPONSE_ACCEPT);
      prompter.set_response_sensitive (Gtk::RESPONSE_ACCEPT, false);

      switch (prompter.run ()) {
      case Gtk::RESPONSE_ACCEPT:
            prompter.get_result (name);
            if (name.length()) {
                  pl->set_name (name);
            }
            break;

      default:
            break;
      }
}

std::string 
RouteTimeAxisView::resolve_new_group_playlist_name(std::string &basename, vector<boost::shared_ptr<Playlist> > const & playlists)
{
      std::string ret(basename);

      std::string group_string = "."+edit_group()->name()+".";

      // iterate through all playlists
      int maxnumber = 0;
      for (vector<boost::shared_ptr<Playlist> >::const_iterator i = playlists.begin(); i != playlists.end(); ++i) {
            std::string tmp = (*i)->name();

            std::string::size_type idx = tmp.find(group_string);              
            // find those which belong to this group
            if (idx != string::npos) {
                  tmp = tmp.substr(idx + group_string.length());

                  // and find the largest current number
                  int x = atoi(tmp.c_str());
                  if (x > maxnumber) {
                        maxnumber = x;
                  }
            }
      }

      maxnumber++;

      char buf[32];
      snprintf (buf, sizeof(buf), "%d", maxnumber);
               
      ret = this->name()+"."+edit_group()->name()+"."+buf;

      return ret;
}

void
RouteTimeAxisView::use_copy_playlist (bool prompt, vector<boost::shared_ptr<Playlist> > const & playlists_before_op)
{
      string name;
      
      boost::shared_ptr<Diskstream> ds = get_diskstream();
      if (!ds || ds->destructive())
            return;

      boost::shared_ptr<const Playlist> pl = ds->playlist();
      if (!pl)
            return;

      name = pl->name();
      
      if (edit_group() && edit_group()->is_active()) {
            name = resolve_new_group_playlist_name(name, playlists_before_op);
      }

      while (_session.playlist_by_name(name)) {
            name = Playlist::bump_name (name, _session);
      }

      // TODO: The prompter "new" button should be de-activated if the user
      // specifies a playlist name which already exists in the session.

      if (prompt) {

            ArdourPrompter prompter (true);
            
            prompter.set_prompt (_("Name for Playlist"));
            prompter.set_initial_text (name);
            prompter.add_button (Gtk::Stock::NEW, Gtk::RESPONSE_ACCEPT);
            prompter.set_response_sensitive (Gtk::RESPONSE_ACCEPT, true);
            prompter.show_all ();
            
            switch (prompter.run ()) {
            case Gtk::RESPONSE_ACCEPT:
                  prompter.get_result (name);
                  break;
                  
            default:
                  return;
            }
      }

      if (name.length()) {
            ds->use_copy_playlist ();
            ds->playlist()->set_name (name);
      }
}

void
RouteTimeAxisView::use_new_playlist (bool prompt, vector<boost::shared_ptr<Playlist> > const & playlists_before_op)
{
      string name;
      
      boost::shared_ptr<Diskstream> ds = get_diskstream();
      if (!ds || ds->destructive())
            return;

      boost::shared_ptr<const Playlist> pl = ds->playlist();
      if (!pl)
            return;

      name = pl->name();
      
      if (edit_group() && edit_group()->is_active()) {
            name = resolve_new_group_playlist_name(name,playlists_before_op);
      }

      while (_session.playlist_by_name(name)) {
            name = Playlist::bump_name (name, _session);
      }


      if (prompt) {
            
            ArdourPrompter prompter (true);
            
            prompter.set_prompt (_("Name for Playlist"));
            prompter.set_initial_text (name);
            prompter.add_button (Gtk::Stock::NEW, Gtk::RESPONSE_ACCEPT);
            prompter.set_response_sensitive (Gtk::RESPONSE_ACCEPT, true);

            switch (prompter.run ()) {
            case Gtk::RESPONSE_ACCEPT:
                  prompter.get_result (name);
                  break;
                  
            default:
                  return;
            }
      }

      if (name.length()) {
            ds->use_new_playlist ();
            ds->playlist()->set_name (name);
      }
}

void
RouteTimeAxisView::clear_playlist ()
{
      boost::shared_ptr<Diskstream> ds = get_diskstream();
      if (!ds || ds->destructive())
            return;

      boost::shared_ptr<Playlist> pl = ds->playlist();
      if (!pl)
            return;

      editor.clear_playlist (pl);
}

void
RouteTimeAxisView::speed_changed ()
{
      Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &RouteTimeAxisView::reset_samples_per_unit));
}

void
RouteTimeAxisView::diskstream_changed ()
{
      Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &RouteTimeAxisView::update_diskstream_display));
}     

void
RouteTimeAxisView::update_diskstream_display ()
{
      if (!get_diskstream()) // bus
            return;

      set_playlist (get_diskstream()->playlist());
      map_frozen ();
}     

void
RouteTimeAxisView::selection_click (GdkEventButton* ev)
{
      if (Keyboard::modifier_state_equals (ev->state, (Keyboard::TertiaryModifier|Keyboard::PrimaryModifier))) {

            /* special case: select/deselect all tracks */
            if (editor.get_selection().selected (this)) {
                  editor.get_selection().clear_tracks ();
            } else {
                  editor.select_all_tracks ();
            }

            return;
      } 

      PublicEditor::TrackViewList* tracks = editor.get_valid_views (this, _route->edit_group());

      switch (Keyboard::selection_type (ev->state)) {
      case Selection::Toggle:
            editor.get_selection().toggle (*tracks);
            break;
            
      case Selection::Set:
            editor.get_selection().set (*tracks);
            break;

      case Selection::Extend:
            if (tracks->size() > 1) {
                  /* add each one, do not "extend" */
                  editor.get_selection().add (*tracks);
            } else {
                  /* extend to the single track */
                  editor.extend_selection_to_track (*tracks->front());
            }
            break;

      case Selection::Add:
            editor.get_selection().add (*tracks);
            break;
      }

      delete tracks;
}

void
RouteTimeAxisView::set_selected_points (PointSelection& points)
{
      for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
            (*i)->set_selected_points (points);
      }
}

void
RouteTimeAxisView::set_selected_regionviews (RegionSelection& regions)
{
      if (_view) {
            _view->set_selected_regionviews (regions);
      }
}

void
RouteTimeAxisView::get_selectables (nframes_t start, nframes_t end, double top, double bot, list<Selectable*>& results)
{
      double speed = 1.0;
      
      if (get_diskstream() != 0) {
            speed = get_diskstream()->speed();
      }
      
      nframes_t start_adjusted = session_frame_to_track_frame(start, speed);
      nframes_t end_adjusted   = session_frame_to_track_frame(end, speed);

      if ((_view && ((top < 0.0 && bot < 0.0))) || touched (top, bot)) {
            _view->get_selectables (start_adjusted, end_adjusted, results);
      }

      /* pick up visible automation tracks */
      
      for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
            if (!(*i)->hidden()) {
                  (*i)->get_selectables (start_adjusted, end_adjusted, top, bot, results);
            }
      }
}

void
RouteTimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
{
      if (_view) {
            _view->get_inverted_selectables (sel, results);
      }

      for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
            if (!(*i)->hidden()) {
                  (*i)->get_inverted_selectables (sel, results);
            }
      }

      return;
}

RouteGroup*
RouteTimeAxisView::edit_group() const
{
      return _route->edit_group();
}

string
RouteTimeAxisView::name() const
{
      return _route->name();
}

boost::shared_ptr<Playlist>
RouteTimeAxisView::playlist () const 
{
      boost::shared_ptr<Diskstream> ds;

      if ((ds = get_diskstream()) != 0) {
            return ds->playlist(); 
      } else {
            return boost::shared_ptr<Playlist> ();
      }
}

void
RouteTimeAxisView::name_entry_changed ()
{
      string x;

      x = name_entry.get_text ();
      
      if (x == _route->name()) {
            return;
      }

      strip_whitespace_edges(x);

      if (x.length() == 0) {
            name_entry.set_text (_route->name());
            return;
      }

      if (_session.route_name_unique (x)) {
            _route->set_name (x, this);
      } else {
            ARDOUR_UI::instance()->popup_error (_("A track already exists with that name"));
            name_entry.set_text (_route->name());
      }
}

void
RouteTimeAxisView::visual_click ()
{
      popup_display_menu (0);
}

void
RouteTimeAxisView::hide_click ()
{
      // LAME fix for hide_button refresh fix
      hide_button.set_sensitive(false);
      
      editor.hide_track_in_display (*this);
      
      hide_button.set_sensitive(true);
}

boost::shared_ptr<Region>
RouteTimeAxisView::find_next_region (nframes_t pos, RegionPoint point, int32_t dir)
{
      boost::shared_ptr<Diskstream> stream;
      boost::shared_ptr<Playlist> playlist;

      if ((stream = get_diskstream()) != 0 && (playlist = stream->playlist()) != 0) {
            return playlist->find_next_region (pos, point, dir);
      }

      return boost::shared_ptr<Region> ();
}

nframes64_t 
RouteTimeAxisView::find_next_region_boundary (nframes64_t pos, int32_t dir)
{
      boost::shared_ptr<Diskstream> stream;
      boost::shared_ptr<Playlist> playlist;

      if ((stream = get_diskstream()) != 0 && (playlist = stream->playlist()) != 0) {
            return playlist->find_next_region_boundary (pos, dir);
      }

      return -1;
}

bool
RouteTimeAxisView::cut_copy_clear (Selection& selection, CutCopyOp op)
{
      boost::shared_ptr<Playlist> what_we_got;
      boost::shared_ptr<Diskstream> ds = get_diskstream();
      boost::shared_ptr<Playlist> playlist;
      bool ret = false;

      if (ds == 0) {
            /* route is a bus, not a track */
            return false;
      }

      playlist = ds->playlist();

      TimeSelection time (selection.time);
      float speed = ds->speed();
      if (speed != 1.0f) {
            for (TimeSelection::iterator i = time.begin(); i != time.end(); ++i) {
                  (*i).start = session_frame_to_track_frame((*i).start, speed);
                  (*i).end   = session_frame_to_track_frame((*i).end,   speed);
            }
      }
      
      XMLNode &before = playlist->get_state();
      switch (op) {
      case Cut:
            if ((what_we_got = playlist->cut (time)) != 0) {
                  editor.get_cut_buffer().add (what_we_got);
                  _session.add_command( new MementoCommand<Playlist>(*playlist.get(), &before, &playlist->get_state()));
                  ret = true;
            }
            break;
      case Copy:
            if ((what_we_got = playlist->copy (time)) != 0) {
                  editor.get_cut_buffer().add (what_we_got);
            }
            break;

      case Clear:
            if ((what_we_got = playlist->cut (time)) != 0) {
                  _session.add_command( new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
                  what_we_got->release ();
                  ret = true;
            }
            break;
      }

      return ret;
}

bool
RouteTimeAxisView::paste (nframes_t pos, float times, Selection& selection, size_t nth)
{
      if (!is_track()) {
            return false;
      }

      boost::shared_ptr<Playlist> playlist = get_diskstream()->playlist();
      PlaylistSelection::iterator p;
      
      for (p = selection.playlists.begin(); p != selection.playlists.end() && nth; ++p, --nth);

      if (p == selection.playlists.end()) {
            return false;
      }

      if (get_diskstream()->speed() != 1.0f)
            pos = session_frame_to_track_frame(pos, get_diskstream()->speed() );
      
      XMLNode &before = playlist->get_state();
      playlist->paste (*p, pos, times);
      _session.add_command( new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));

      return true;
}


list<TimeAxisView*>
RouteTimeAxisView::get_child_list()
{
  
      list<TimeAxisView*>redirect_children;
      
      for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
            if (!(*i)->hidden()) {
                  redirect_children.push_back(*i);
            }
      }
      return redirect_children;
}


void
RouteTimeAxisView::build_playlist_menu (Gtk::Menu * menu)
{
      using namespace Menu_Helpers;

      if (!menu || !is_track()) {
            return;
      }

      MenuList& playlist_items = menu->items();
      menu->set_name ("ArdourContextMenu");
      playlist_items.clear();

      if (playlist_menu) {
            delete playlist_menu;
      }

      playlist_menu = new Menu;
      playlist_menu->set_name ("ArdourContextMenu");

      vector<boost::shared_ptr<Playlist> > playlists;
      boost::shared_ptr<Diskstream> ds = get_diskstream();
      RadioMenuItem::Group playlist_group;

      _session.get_playlists (playlists);
      
      for (vector<boost::shared_ptr<Playlist> >::iterator i = playlists.begin(); i != playlists.end(); ++i) {

            if ((*i)->get_orig_diskstream_id() == ds->id()) {
                  playlist_items.push_back (RadioMenuElem (playlist_group, (*i)->name(), bind (mem_fun (*this, &RouteTimeAxisView::use_playlist),
                                                                             boost::weak_ptr<Playlist> (*i))));

                  if (ds->playlist()->id() == (*i)->id()) {
                        static_cast<RadioMenuItem*>(&playlist_items.back())->set_active();
                  }
            } else if (ds->playlist()->id() == (*i)->id()) {
                  playlist_items.push_back (RadioMenuElem (playlist_group, (*i)->name(), bind (mem_fun (*this, &RouteTimeAxisView::use_playlist), 
                                                                             boost::weak_ptr<Playlist>(*i))));
                  static_cast<RadioMenuItem*>(&playlist_items.back())->set_active();
                  
            }
      }

      playlist_items.push_back (SeparatorElem());
      playlist_items.push_back (MenuElem (_("Rename"), mem_fun(*this, &RouteTimeAxisView::rename_current_playlist)));
      playlist_items.push_back (SeparatorElem());

      if (!edit_group() || !edit_group()->is_active()) {
            playlist_items.push_back (MenuElem (_("New"), bind(mem_fun(editor, &PublicEditor::new_playlists), this)));
            playlist_items.push_back (MenuElem (_("New Copy"), bind(mem_fun(editor, &PublicEditor::copy_playlists), this)));

      } else {
            // Use a label which tells the user what is happening
            playlist_items.push_back (MenuElem (_("New Take"), bind(mem_fun(editor, &PublicEditor::new_playlists), this)));
            playlist_items.push_back (MenuElem (_("Copy Take"), bind(mem_fun(editor, &PublicEditor::copy_playlists), this)));
            
      }

      playlist_items.push_back (SeparatorElem());
      playlist_items.push_back (MenuElem (_("Clear Current"), bind(mem_fun(editor, &PublicEditor::clear_playlists), this)));
      playlist_items.push_back (SeparatorElem());

      playlist_items.push_back (MenuElem(_("Select from all ..."), mem_fun(*this, &RouteTimeAxisView::show_playlist_selector)));
}

void
RouteTimeAxisView::use_playlist (boost::weak_ptr<Playlist> wpl)
{
      assert (is_track());

      boost::shared_ptr<Playlist> pl (wpl.lock());

      if (!pl) {
            return;
      }

      boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist> (pl);
      
      if (apl) {
            if (get_diskstream()->playlist() == apl) {
                  // radio button cotnrols mean this function is called for both the 
                  // old and new playlist
                  return;
            }
            get_diskstream()->use_playlist (apl);


            if (edit_group() && edit_group()->is_active()) {
                  //PBD::stacktrace(cerr, 20);
                  std::string group_string = "."+edit_group()->name()+".";

                  std::string take_name = apl->name();
                  std::string::size_type idx = take_name.find(group_string);

                  if (idx == std::string::npos)
                        return;

                  take_name = take_name.substr(idx + group_string.length()); // find the bit containing the take number / name
                  
                  for (list<Route*>::const_iterator i = edit_group()->route_list().begin(); i != edit_group()->route_list().end(); ++i) {
                        if ( (*i) == this->route().get()) {
                              continue;
                        }
                        
                        std::string playlist_name = (*i)->name()+group_string+take_name;

                        Track *track = dynamic_cast<Track *>(*i);
                        if (!track) {
                              std::cerr << "route " << (*i)->name() << " is not a Track" << std::endl;
                              continue;
                        }

                        boost::shared_ptr<Playlist> ipl = session().playlist_by_name(playlist_name);
                        if (!ipl) {
                              // No playlist for this track for this take yet, make it
                              track->diskstream()->use_new_playlist();
                              track->diskstream()->playlist()->set_name(playlist_name);
                        } else {
                              track->diskstream()->use_playlist(ipl);
                        }
                        
                        //(*i)->get_dis
                  }
            }
      }
}

void
RouteTimeAxisView::show_playlist_selector ()
{
      editor.playlist_selector().show_for (this);
}

void
RouteTimeAxisView::map_frozen ()
{
      if (!is_track()) {
            return;
      }

      ENSURE_GUI_THREAD (mem_fun(*this, &RouteTimeAxisView::map_frozen));

      switch (track()->freeze_state()) {
      case Track::Frozen:
            playlist_button.set_sensitive (false);
            rec_enable_button->set_sensitive (false);
            break;
      default:
            playlist_button.set_sensitive (true);
            rec_enable_button->set_sensitive (true);
            break;
      }
}

void
RouteTimeAxisView::color_handler ()
{
      if (timestretch_rect) {
            timestretch_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeStretchOutline.get();
      }

      if (timestretch_rect) {
            timestretch_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeStretchFill.get();
      }

      reset_meter();
}

void
RouteTimeAxisView::show_all_automation ()
{
      no_redraw = true;

      for (list<RedirectAutomationInfo*>::iterator i = redirect_automation.begin(); i != redirect_automation.end(); ++i) {
            for (vector<RedirectAutomationNode*>::iterator ii = (*i)->lines.begin(); ii != (*i)->lines.end(); ++ii) {
                  if ((*ii)->view == 0) {
                        add_redirect_automation_curve ((*i)->redirect, (*ii)->what);
                  } 

                  (*ii)->menu_item->set_active (true);
            }
      }

      no_redraw = false;

       _route->gui_changed ("visible_tracks", (void *) 0); /* EMIT_SIGNAL */
}

void
RouteTimeAxisView::show_existing_automation ()
{
      no_redraw = true;

      for (list<RedirectAutomationInfo*>::iterator i = redirect_automation.begin(); i != redirect_automation.end(); ++i) {
            for (vector<RedirectAutomationNode*>::iterator ii = (*i)->lines.begin(); ii != (*i)->lines.end(); ++ii) {
                  if ((*ii)->view != 0) {
                        (*ii)->menu_item->set_active (true);
                  }
            }
      }

      no_redraw = false;
      
      _route->gui_changed ("visible_tracks", (void *) 0); /* EMIT_SIGNAL */
}

void
RouteTimeAxisView::hide_all_automation ()
{
      no_redraw = true;

      for (list<RedirectAutomationInfo*>::iterator i = redirect_automation.begin(); i != redirect_automation.end(); ++i) {
            for (vector<RedirectAutomationNode*>::iterator ii = (*i)->lines.begin(); ii != (*i)->lines.end(); ++ii) {
                  (*ii)->menu_item->set_active (false);
            }
      }

      no_redraw = false;
       _route->gui_changed ("visible_tracks", (void *) 0); /* EMIT_SIGNAL */
}


void
RouteTimeAxisView::region_view_added (RegionView* rv)
{
      for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
            AutomationTimeAxisView* atv;

            if ((atv = dynamic_cast<AutomationTimeAxisView*> (*i)) != 0) {
                  rv->add_ghost (*atv);
            }
      }
}

void
RouteTimeAxisView::add_ghost_to_redirect (RegionView* rv, AutomationTimeAxisView* atv)
{
      rv->add_ghost (*atv);
}

RouteTimeAxisView::RedirectAutomationInfo::~RedirectAutomationInfo ()
{
      for (vector<RedirectAutomationNode*>::iterator i = lines.begin(); i != lines.end(); ++i) {
            delete *i;
      }
}


RouteTimeAxisView::RedirectAutomationNode::~RedirectAutomationNode ()
{
      parent.remove_ran (this);

      if (view) {
            delete view;
      }
}

void
RouteTimeAxisView::remove_ran (RedirectAutomationNode* ran)
{
      if (ran->view) {
            remove_child (ran->view);
      }
}

RouteTimeAxisView::RedirectAutomationNode*
RouteTimeAxisView::find_redirect_automation_node (boost::shared_ptr<Redirect> redirect, uint32_t what)
{
      for (list<RedirectAutomationInfo*>::iterator i = redirect_automation.begin(); i != redirect_automation.end(); ++i) {

            if ((*i)->redirect == redirect) {

                  for (vector<RedirectAutomationNode*>::iterator ii = (*i)->lines.begin(); ii != (*i)->lines.end(); ++ii) {
                        if ((*ii)->what == what) {
                              return *ii;
                        }
                  }
            }
      }

      return 0;
}

// FIXME: duplicated in midi_time_axis.cc
static string 
legalize_for_xml_node (string str)
{
      string::size_type pos;
      string legal_chars = "abcdefghijklmnopqrtsuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_=:";
      string legal;

      legal = str;
      pos = 0;

      while ((pos = legal.find_first_not_of (legal_chars, pos)) != string::npos) {
            legal.replace (pos, 1, "_");
            pos += 1;
      }

      return legal;
}


void
RouteTimeAxisView::add_redirect_automation_curve (boost::shared_ptr<Redirect> redirect, uint32_t what)
{
      RedirectAutomationLine* ral;
      string name;
      RedirectAutomationNode* ran;

      if ((ran = find_redirect_automation_node (redirect, what)) == 0) {
            fatal << _("programming error: ")
                  << string_compose (X_("redirect automation curve for %1:%2 not registered with audio track!"),
                          redirect->name(), what)
                  << endmsg;
            /*NOTREACHED*/
            return;
      }

      if (ran->view) {
            return;
      }

      name = redirect->describe_parameter (what);

      /* create a string that is a legal XML node name that can be used to refer to this redirect+port combination */

      char state_name[256];
      snprintf (state_name, sizeof (state_name), "Redirect-%s-%" PRIu32, legalize_for_xml_node (redirect->name()).c_str(), what);

      ran->view = new RedirectAutomationTimeAxisView (_session, _route, editor, *this, parent_canvas, name, what, *redirect, state_name);

      ral = new RedirectAutomationLine (name, 
                                *redirect, what, _session, *ran->view,
                                *ran->view->canvas_display, redirect->automation_list (what));
      
      ral->set_line_color (ARDOUR_UI::config()->canvasvar_RedirectAutomationLine.get());
      ral->queue_reset ();

      ran->view->add_line (*ral);

      ran->view->Hiding.connect (bind (mem_fun(*this, &RouteTimeAxisView::redirect_automation_track_hidden), ran, redirect));

      if (!ran->view->marked_for_display()) {
            ran->view->hide ();
      } else {
            ran->menu_item->set_active (true);
      }

      add_child (ran->view);

      if (_view) {
            _view->foreach_regionview (bind (mem_fun(*this, &RouteTimeAxisView::add_ghost_to_redirect), ran->view));
      }

      redirect->mark_automation_visible (what, true);
}

void
RouteTimeAxisView::redirect_automation_track_hidden (RouteTimeAxisView::RedirectAutomationNode* ran, boost::shared_ptr<Redirect> r)
{
      if (!_hidden) {
            ran->menu_item->set_active (false);
      }

      r->mark_automation_visible (ran->what, false);

       _route->gui_changed ("visible_tracks", (void *) 0); /* EMIT_SIGNAL */
}

void
RouteTimeAxisView::add_existing_redirect_automation_curves (boost::shared_ptr<Redirect> redirect)
{
      set<uint32_t> s;
      RedirectAutomationLine *ral;

      redirect->what_has_visible_automation (s);

      for (set<uint32_t>::iterator i = s.begin(); i != s.end(); ++i) {
            
            if ((ral = find_redirect_automation_curve (redirect, *i)) != 0) {
                  ral->queue_reset ();
            } else {
                  add_redirect_automation_curve (redirect, (*i));
            }
      }
}

void
RouteTimeAxisView::add_redirect_to_subplugin_menu (boost::shared_ptr<Redirect> r)
{
      using namespace Menu_Helpers;
      RedirectAutomationInfo *rai;
      list<RedirectAutomationInfo*>::iterator x;

      const std::set<uint32_t>& automatable = r->what_can_be_automated ();
      std::set<uint32_t> has_visible_automation;

      r->what_has_visible_automation(has_visible_automation);

      if (automatable.empty()) {
            return;
      }

      for (x = redirect_automation.begin(); x != redirect_automation.end(); ++x) {
            if ((*x)->redirect == r) {
                  break;
            }
      }

      if (x == redirect_automation.end()) {

            rai = new RedirectAutomationInfo (r);
            redirect_automation.push_back (rai);

      } else {

            rai = *x;

      }

      /* any older menu was deleted at the top of redirects_changed()
         when we cleared the subplugin menu.
      */

      rai->menu = manage (new Menu);
      MenuList& items = rai->menu->items();
      rai->menu->set_name ("ArdourContextMenu");

      items.clear ();

      for (std::set<uint32_t>::const_iterator i = automatable.begin(); i != automatable.end(); ++i) {

            RedirectAutomationNode* ran;
            CheckMenuItem* mitem;
            
            string name = r->describe_parameter (*i);
            
            items.push_back (CheckMenuElem (name));
            mitem = dynamic_cast<CheckMenuItem*> (&items.back());

            if (has_visible_automation.find((*i)) != has_visible_automation.end()) {
                  mitem->set_active(true);
            }

            if ((ran = find_redirect_automation_node (r, *i)) == 0) {

                  /* new item */
                  
                  ran = new RedirectAutomationNode (*i, mitem, *this);
                  
                  rai->lines.push_back (ran);

            } else {

                  ran->menu_item = mitem;

            }

            mitem->signal_toggled().connect (bind (mem_fun(*this, &RouteTimeAxisView::redirect_menu_item_toggled), rai, ran));
      }

      /* add the menu for this redirect, because the subplugin
         menu is always cleared at the top of redirects_changed().
         this is the result of some poor design in gtkmm and/or
         GTK+.
      */

      subplugin_menu.items().push_back (MenuElem (r->name(), *rai->menu));
      rai->valid = true;
}

void
RouteTimeAxisView::redirect_menu_item_toggled (RouteTimeAxisView::RedirectAutomationInfo* rai,
                                     RouteTimeAxisView::RedirectAutomationNode* ran)
{
      bool showit = ran->menu_item->get_active();
      bool redraw = false;

      if (ran->view == 0 && showit) {
            add_redirect_automation_curve (rai->redirect, ran->what);
            redraw = true;
      }

      if (showit != ran->view->marked_for_display()) {

            if (showit) {
                  ran->view->set_marked_for_display (true);
                  ran->view->canvas_display->show();
                  ran->view->canvas_background->show();
            } else {
                  rai->redirect->mark_automation_visible (ran->what, true);
                  ran->view->set_marked_for_display (false);
                  ran->view->hide ();
            }

            redraw = true;

      }

      if (redraw && !no_redraw) {

            /* now trigger a redisplay */
            
             _route->gui_changed ("visible_tracks", (void *) 0); /* EMIT_SIGNAL */

      }
}

void
RouteTimeAxisView::redirects_changed (void *src)
{
      using namespace Menu_Helpers;

      for (list<RedirectAutomationInfo*>::iterator i = redirect_automation.begin(); i != redirect_automation.end(); ++i) {
            (*i)->valid = false;
      }

      subplugin_menu.items().clear ();

      _route->foreach_redirect (this, &RouteTimeAxisView::add_redirect_to_subplugin_menu);
      _route->foreach_redirect (this, &RouteTimeAxisView::add_existing_redirect_automation_curves);

      for (list<RedirectAutomationInfo*>::iterator i = redirect_automation.begin(); i != redirect_automation.end(); ) {

            list<RedirectAutomationInfo*>::iterator tmp;

            tmp = i;
            ++tmp;

            if (!(*i)->valid) {

                  delete *i;
                  redirect_automation.erase (i);

            } 

            i = tmp;
      }

      /* change in visibility was possible */

      _route->gui_changed ("visible_tracks", this);
}

RedirectAutomationLine *
RouteTimeAxisView::find_redirect_automation_curve (boost::shared_ptr<Redirect> redirect, uint32_t what)
{
      RedirectAutomationNode* ran;

      if ((ran = find_redirect_automation_node (redirect, what)) != 0) {
            if (ran->view) {
                  return dynamic_cast<RedirectAutomationLine*> (ran->view->lines.front());
            } 
      }

      return 0;
}

void
RouteTimeAxisView::reset_redirect_automation_curves ()
{
      for (vector<RedirectAutomationLine*>::iterator i = redirect_automation_curves.begin(); i != redirect_automation_curves.end(); ++i) {
            (*i)->reset();
      }
}

void
RouteTimeAxisView::update_rec_display ()
{
      RouteUI::update_rec_display ();
      name_entry.set_sensitive (!_route->record_enabled());
}

void
RouteTimeAxisView::fast_update ()
{
      gm.get_level_meter().update_meters ();
}

void
RouteTimeAxisView::hide_meter ()
{
      clear_meter ();
      gm.get_level_meter().hide_meters ();
}

void
RouteTimeAxisView::show_meter ()
{
      reset_meter ();
}

void
RouteTimeAxisView::reset_meter ()
{
      if (Config->get_show_track_meters()) {
            gm.get_level_meter().setup_meters (height-5);
      } else {
            hide_meter ();
      }
}

void
RouteTimeAxisView::clear_meter ()
{
      gm.get_level_meter().clear_meters ();
}

void
RouteTimeAxisView::meter_changed (void *src)
{
      ENSURE_GUI_THREAD (bind (mem_fun(*this, &RouteTimeAxisView::meter_changed), src));
      reset_meter();
}

void
RouteTimeAxisView::io_changed (IOChange change, void *src)
{
      reset_meter ();
}


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