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mixer_strip.cc

/*
    Copyright (C) 2000-2002 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 <cmath>
#include <algorithm>

#include <sigc++/bind.h>

#include <pbd/convert.h>
#include <pbd/enumwriter.h>

#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/choice.h>
#include <gtkmm2ext/stop_signal.h>
#include <gtkmm2ext/doi.h>
#include <gtkmm2ext/slider_controller.h>
#include <gtkmm2ext/bindable_button.h>

#include <ardour/ardour.h>
#include <ardour/session.h>
#include <ardour/audioengine.h>
#include <ardour/route.h>
#include <ardour/audio_track.h>
#include <ardour/audio_diskstream.h>
#include <ardour/panner.h>
#include <ardour/send.h>
#include <ardour/insert.h>
#include <ardour/profile.h>
#include <ardour/ladspa_plugin.h>
#include <ardour/connection.h>
#include <ardour/session_connection.h>

#include "ardour_ui.h"
#include "ardour_dialog.h"
#include "mixer_strip.h"
#include "mixer_ui.h"
#include "keyboard.h"
#include "public_editor.h"
#include "send_ui.h"
#include "io_selector.h"
#include "utils.h"
#include "gui_thread.h"

#include "i18n.h"

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

int MixerStrip::scrollbar_height = 0;

#ifdef VARISPEED_IN_MIXER_STRIP
static void 
speed_printer (char buf[32], Gtk::Adjustment& adj, void* arg)
{
      float val = adj.get_value ();

      if (val == 1.0) {
            strcpy (buf, "1");
      } else {
            snprintf (buf, 32, "%.3f", val);
      }
}
#endif 

MixerStrip::MixerStrip (Mixer_UI& mx, Session& sess, boost::shared_ptr<Route> rt, bool in_mixer)
      : AxisView(sess),
        RouteUI (rt, sess, _("Mute"), _("Solo"), _("Record")),
        _mixer(mx),
        _mixer_owned (in_mixer),
        pre_redirect_box (PreFader, sess, rt, mx.plugin_selector(), mx.selection(), in_mixer),
        post_redirect_box (PostFader, sess, rt, mx.plugin_selector(), mx.selection(), in_mixer),
        gpm (_route, sess),
        panners (_route, sess),
        button_table (3, 2),
        middle_button_table (1, 2),
        bottom_button_table (1, 2),
        meter_point_label (_("pre")),
        comment_button (_("Comments")),
        speed_adjustment (1.0, 0.001, 4.0, 0.001, 0.1),
        speed_spinner (&speed_adjustment, "MixerStripSpeedBase", true)

{
      if (set_color_from_route()) {
            set_color (unique_random_color());
      }

      input_selector = 0;
      output_selector = 0;
      group_menu = 0;
      _marked_for_display = false;
      route_ops_menu = 0;
      ignore_comment_edit = false;
      ignore_toggle = false;
      ignore_speed_adjustment = false;
      comment_window = 0;
      comment_area = 0;
      _width_owner = 0;

      width_button.add (*(manage (new Gtk::Image (::get_icon("strip_width")))));
      hide_button.add (*(manage (new Gtk::Image (::get_icon("hide")))));

      input_label.set_text (_("Input"));
      input_button.add (input_label);
      input_button.set_name ("MixerIOButton");
      input_label.set_name ("MixerIOButtonLabel");

      output_label.set_text (_("Output"));
      output_button.add (output_label);
      output_button.set_name ("MixerIOButton");
      output_label.set_name ("MixerIOButtonLabel");

      _route->meter_change.connect (mem_fun(*this, &MixerStrip::meter_changed));
      meter_point_button.add (meter_point_label);
      meter_point_button.set_name ("MixerStripMeterPreButton");
      meter_point_label.set_name ("MixerStripMeterPreButton");
      
      switch (_route->meter_point()) {
      case MeterInput:
            meter_point_label.set_text (_("input"));
            break;
            
      case MeterPreFader:
            meter_point_label.set_text (_("pre"));
            break;
            
      case MeterPostFader:
            meter_point_label.set_text (_("post"));
            break;
      }
      
      /* TRANSLATORS: this string should be longest of the strings
         used to describe meter points. In english, it's "input".
      */
      set_size_request_to_display_given_text (meter_point_button, _("tupni"), 5, 5);
    
      bottom_button_table.attach (meter_point_button, 1, 2, 0, 1);
    
      meter_point_button.signal_button_press_event().connect (mem_fun (gpm, &GainMeter::meter_press), false);
      /* XXX what is this meant to do? */
      //meter_point_button.signal_button_release_event().connect (mem_fun (gpm, &GainMeter::meter_release), false);

      hide_button.set_events (hide_button.get_events() & ~(Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK));

      mute_button->set_name ("MixerMuteButton");
      solo_button->set_name ("MixerSoloButton");

      button_table.set_homogeneous (true);
      button_table.set_spacings (0);

      button_table.attach (name_button, 0, 2, 0, 1);
      button_table.attach (input_button, 0, 2, 1, 2);

      middle_button_table.set_homogeneous (true);
      middle_button_table.set_spacings (0);
      middle_button_table.attach (*mute_button, 0, 1, 0, 1);
      middle_button_table.attach (*solo_button, 1, 2, 0, 1);

      bottom_button_table.set_col_spacings (0);
      bottom_button_table.set_homogeneous (true);
      bottom_button_table.attach (group_button, 0, 1, 0, 1);
      
      if (is_audio_track()) {
            
            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));

            rec_enable_button->set_name ("MixerRecordEnableButton");

            boost::shared_ptr<AudioTrack> at = audio_track();

            at->FreezeChange.connect (mem_fun(*this, &MixerStrip::map_frozen));

#ifdef VARISPEED_IN_MIXER_STRIP
            speed_adjustment.signal_value_changed().connect (mem_fun(*this, &MixerStrip::speed_adjustment_changed));
            
            speed_frame.set_name ("BaseFrame");
            speed_frame.set_shadow_type (Gtk::SHADOW_IN);
            speed_frame.add (speed_spinner);
            
            speed_spinner.set_print_func (speed_printer, 0);

            ARDOUR_UI::instance()->tooltips().set_tip (speed_spinner, _("Varispeed"));

            button_table.attach (speed_frame, 0, 2, 5, 6);
#endif /* VARISPEED_IN_MIXER_STRIP */

            button_table.attach (*rec_enable_button, 0, 2, 2, 3);
      }

      name_button.add (name_label);
      name_button.set_name ("MixerNameButton");
      Gtkmm2ext::set_size_request_to_display_given_text (name_button, "longest label", 2, 2);

      name_label.set_name ("MixerNameButtonLabel");
      if (_route->phase_invert()) {
              name_label.set_text (X_("Ø ") + name_label.get_text());
      } else {
              name_label.set_text (_route->name());
      }

      group_button.add (group_label);
      group_button.set_name ("MixerGroupButton");
      group_label.set_name ("MixerGroupButtonLabel");

      comment_button.set_name ("MixerCommentButton");

      ARDOUR_UI::instance()->tooltips().set_tip (comment_button, _route->comment()==""    ?
                                          _("Click to Add/Edit Comments"):
                                          _route->comment());

      comment_button.signal_clicked().connect (mem_fun(*this, &MixerStrip::comment_button_clicked));
      
      global_vpacker.set_border_width (0);
      global_vpacker.set_spacing (0);

      VBox *whvbox = manage (new VBox);

      width_button.set_name ("MixerWidthButton");
      hide_button.set_name ("MixerHideButton");
      top_event_box.set_name ("MixerTopEventBox");

      width_button.signal_clicked().connect (mem_fun(*this, &MixerStrip::width_clicked));
      hide_button.signal_clicked().connect (mem_fun(*this, &MixerStrip::hide_clicked));

      width_hide_box.pack_start (width_button, false, true);
      width_hide_box.pack_start (top_event_box, true, true);
      width_hide_box.pack_end (hide_button, false, true);
      Gtk::Alignment *gain_meter_alignment = Gtk::manage(new Gtk::Alignment());
      gain_meter_alignment->set_padding(0, 4, 0, 0);
      gain_meter_alignment->add(gpm);

      whvbox->pack_start (width_hide_box, true, true);

      global_vpacker.pack_start (*whvbox, Gtk::PACK_SHRINK);
      global_vpacker.pack_start (button_table,Gtk::PACK_SHRINK);
      global_vpacker.pack_start (pre_redirect_box, true, true);
      global_vpacker.pack_start (middle_button_table,Gtk::PACK_SHRINK);
      global_vpacker.pack_start (*gain_meter_alignment,Gtk::PACK_SHRINK);
      global_vpacker.pack_start (bottom_button_table,Gtk::PACK_SHRINK);
      global_vpacker.pack_start (post_redirect_box, true, true);
      global_vpacker.pack_start (panners, Gtk::PACK_SHRINK);
      global_vpacker.pack_start (output_button, Gtk::PACK_SHRINK);
      global_vpacker.pack_start (comment_button, Gtk::PACK_SHRINK);

      if (route()->master() || route()->control()) {
            
            if (scrollbar_height == 0) {
                  HScrollbar scrollbar;
                  Gtk::Requisition requisition(scrollbar.size_request ());
                  scrollbar_height = requisition.height;
            }

            EventBox* spacer = manage (new EventBox);
            spacer->set_size_request (-1, scrollbar_height);
            global_vpacker.pack_start (*spacer, false, false);
      }

      global_frame.add (global_vpacker);
      global_frame.set_shadow_type (Gtk::SHADOW_IN);
      global_frame.set_name ("BaseFrame");

      add (global_frame);

      /* force setting of visible selected status */

      _selected = true;
      set_selected (false);

      _packed = false;
      _embedded = false;

      _session.engine().Stopped.connect (mem_fun(*this, &MixerStrip::engine_stopped));
      _session.engine().Running.connect (mem_fun(*this, &MixerStrip::engine_running));
      _route->input_changed.connect (mem_fun(*this, &MixerStrip::input_changed));
      _route->output_changed.connect (mem_fun(*this, &MixerStrip::output_changed));
      _route->mute_changed.connect (mem_fun(*this, &RouteUI::mute_changed));
      _route->solo_changed.connect (mem_fun(*this, &RouteUI::solo_changed));
      _route->solo_safe_changed.connect (mem_fun(*this, &RouteUI::solo_changed));
      _route->mix_group_changed.connect (mem_fun(*this, &MixerStrip::mix_group_changed));
      _route->panner().Changed.connect (mem_fun(*this, &MixerStrip::connect_to_pan));

      if (is_audio_track()) {
            audio_track()->DiskstreamChanged.connect (mem_fun(*this, &MixerStrip::diskstream_changed));
            get_diskstream()->SpeedChanged.connect (mem_fun(*this, &MixerStrip::speed_changed));
      }

      _route->name_changed.connect (mem_fun(*this, &RouteUI::name_changed));
      _route->comment_changed.connect (mem_fun(*this, &MixerStrip::comment_changed));
      _route->gui_changed.connect (mem_fun(*this, &MixerStrip::route_gui_changed));

      input_button.signal_button_press_event().connect (mem_fun(*this, &MixerStrip::input_press), false);
      output_button.signal_button_press_event().connect (mem_fun(*this, &MixerStrip::output_press), false);

      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);

      name_button.signal_button_press_event().connect (mem_fun(*this, &MixerStrip::name_button_button_press), false);
      group_button.signal_button_press_event().connect (mem_fun(*this, &MixerStrip::select_mix_group), false);

      _width = (Width) -1;
      set_stuff_from_route ();

      /* start off as a passthru strip. we'll correct this, if necessary,
         in update_diskstream_display().
      */

      set_name ("AudioTrackStripBase");

      /* now force an update of all the various elements */

      pre_redirect_box.update();
      post_redirect_box.update();
      mute_changed (0);
      solo_changed (0);
      name_changed (0);
      comment_changed (0);
      mix_group_changed (0);

      connect_to_pan ();

      panners.setup_pan ();

      if (is_audio_track()) {
            speed_changed ();
      }

      update_diskstream_display ();
      update_input_display ();
      update_output_display ();

      add_events (Gdk::BUTTON_RELEASE_MASK);
}

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

      if (input_selector) {
            delete input_selector;
      }

      if (output_selector) {
            delete output_selector;
      }
}

void
MixerStrip::set_stuff_from_route ()
{
      XMLProperty *prop;

      ensure_xml_node ();

      /* if width is not set, it will be set by the MixerUI or editor */

      if ((prop = xml_node->property ("strip_width")) != 0) {
            set_width (Width (string_2_enum (prop->value(), _width)), this);
      }

      if ((prop = xml_node->property ("shown_mixer")) != 0) {
            if (prop->value() == "no") {
                  _marked_for_display = false;
            } else {
                  _marked_for_display = true;
            }
      } else {
            /* backwards compatibility */
            _marked_for_display = true;
      }
}

void
MixerStrip::set_width (Width w, void* owner)
{
      /* always set the gpm width again, things may be hidden */

      gpm.set_width (w);
      panners.set_width (w);
      pre_redirect_box.set_width (w);
      post_redirect_box.set_width (w);

      _width_owner = owner;

      ensure_xml_node ();
      
      _width = w;

      if (_width_owner == this) {
            xml_node->add_property ("strip_width", enum_2_string (_width));
      }

      switch (w) {
      case Wide:
            set_size_request (-1, -1);
            
            if (rec_enable_button)  {
                  ((Gtk::Label*)rec_enable_button->get_child())->set_text (_("record"));
            }
            ((Gtk::Label*)mute_button->get_child())->set_text  (_("Mute"));
            ((Gtk::Label*)solo_button->get_child())->set_text (_("Solo"));

            if (_route->comment() == "") {
                   comment_button.unset_bg (STATE_NORMAL);
                   ((Gtk::Label*)comment_button.get_child())->set_text (_("comments"));
            } else {
                   comment_button.modify_bg (STATE_NORMAL, color());
                   ((Gtk::Label*)comment_button.get_child())->set_text (_("*comments*"));
            }

            ((Gtk::Label*)gpm.gain_automation_style_button.get_child())->set_text (gpm.astyle_string(_route->gain_automation_curve().automation_style()));
            ((Gtk::Label*)gpm.gain_automation_state_button.get_child())->set_text (gpm.astate_string(_route->gain_automation_curve().automation_state()));
            ((Gtk::Label*)panners.pan_automation_style_button.get_child())->set_text (panners.astyle_string(_route->panner().automation_style()));
            ((Gtk::Label*)panners.pan_automation_state_button.get_child())->set_text (panners.astate_string(_route->panner().automation_state()));
            Gtkmm2ext::set_size_request_to_display_given_text (name_button, "long", 2, 2);
            break;

      case Narrow:
            if (rec_enable_button) {
                  ((Gtk::Label*)rec_enable_button->get_child())->set_text (_("Rec"));
            }
            ((Gtk::Label*)mute_button->get_child())->set_text (_("M"));
            ((Gtk::Label*)solo_button->get_child())->set_text (_("S"));

            if (_route->comment() == "") {
                   comment_button.unset_bg (STATE_NORMAL);
                   ((Gtk::Label*)comment_button.get_child())->set_text (_("Cmt"));
            } else {
                   comment_button.modify_bg (STATE_NORMAL, color());
                   ((Gtk::Label*)comment_button.get_child())->set_text (_("*Cmt*"));
            }

            ((Gtk::Label*)gpm.gain_automation_style_button.get_child())->set_text (gpm.short_astyle_string(_route->gain_automation_curve().automation_style()));
            ((Gtk::Label*)gpm.gain_automation_state_button.get_child())->set_text (gpm.short_astate_string(_route->gain_automation_curve().automation_state()));
            ((Gtk::Label*)panners.pan_automation_style_button.get_child())->set_text (panners.short_astyle_string(_route->panner().automation_style()));
            ((Gtk::Label*)panners.pan_automation_state_button.get_child())->set_text (panners.short_astate_string(_route->panner().automation_state()));
            Gtkmm2ext::set_size_request_to_display_given_text (name_button, "longest label", 2, 2);
            set_size_request (max (50, gpm.get_gm_width()), -1);
            break;
      }

      update_input_display ();
      update_output_display ();
      mix_group_changed (0);
      name_changed (0);

}

void
MixerStrip::set_packed (bool yn)
{
      _packed = yn;

      ensure_xml_node ();

      if (_packed) {
            xml_node->add_property ("shown_mixer", "yes");
      } else {
            xml_node->add_property ("shown_mixer", "no");
      }
}


gint
MixerStrip::output_press (GdkEventButton *ev)
{
        using namespace Menu_Helpers;
      if (!_session.engine().connected()) {
              MessageDialog msg (_("Not connected to JACK - no I/O changes are possible"));
            msg.run ();
            return true;
      }

      MenuList& citems = output_menu.items();
      switch (ev->button) {

      case 1:
            output_menu.set_name ("ArdourContextMenu");
            citems.clear();
            
            citems.push_back (MenuElem (_("Edit"), mem_fun(*this, &MixerStrip::edit_output_configuration)));
            citems.push_back (SeparatorElem());
            citems.push_back (MenuElem (_("Disconnect"), mem_fun (*(static_cast<RouteUI*>(this)), &RouteUI::disconnect_output)));
            citems.push_back (SeparatorElem());
            
            _session.foreach_connection (this, &MixerStrip::add_connection_to_output_menu);

            output_menu.popup (1, ev->time);
            break;
            
      default:
              break;
      }
      return TRUE;
}

void
MixerStrip::edit_output_configuration ()
{
      if (output_selector == 0) {
            output_selector = new IOSelectorWindow (_session, _route, false);
      } 

      if (output_selector->is_visible()) {
            output_selector->get_toplevel()->get_window()->raise();
      } else {
            output_selector->show_all ();
      }
}

void
MixerStrip::edit_input_configuration ()
{
      if (input_selector == 0) {
            input_selector = new IOSelectorWindow (_session, _route, true);
      } 

      if (input_selector->is_visible()) {
            input_selector->get_toplevel()->get_window()->raise();
      } else {
            input_selector->show_all ();
      }
}

gint
MixerStrip::input_press (GdkEventButton *ev)
{
      using namespace Menu_Helpers;

      MenuList& citems = input_menu.items();
      input_menu.set_name ("ArdourContextMenu");
      citems.clear();
      
      if (!_session.engine().connected()) {
              MessageDialog msg (_("Not connected to JACK - no I/O changes are possible"));
            msg.run ();
            return true;
      }

      switch (ev->button) {

      case 1:
            citems.push_back (MenuElem (_("Edit"), mem_fun(*this, &MixerStrip::edit_input_configuration)));
            citems.push_back (SeparatorElem());
            citems.push_back (MenuElem (_("Disconnect"), mem_fun (*(static_cast<RouteUI*>(this)), &RouteUI::disconnect_input)));
            citems.push_back (SeparatorElem());
            
            _session.foreach_connection (this, &MixerStrip::add_connection_to_input_menu);

            input_menu.popup (1, ev->time);
            break;
            
      default:
              break;
      }
      return TRUE;
}

void
MixerStrip::connection_input_chosen (ARDOUR::Connection *c)
{
      if (!ignore_toggle) {

            try { 
                  _route->use_input_connection (*c, this);
            }

            catch (AudioEngine::PortRegistrationFailure& err) {
                  error << _("could not register new ports required for that connection")
                        << endmsg;
            }
      }
}

void
MixerStrip::connection_output_chosen (ARDOUR::Connection *c)
{
      if (!ignore_toggle) {

            try { 
                  _route->use_output_connection (*c, this);
            }

            catch (AudioEngine::PortRegistrationFailure& err) {
                  error << _("could not register new ports required for that connection")
                        << endmsg;
            }
      }
}

void
MixerStrip::add_connection_to_input_menu (ARDOUR::Connection* c)
{
      using namespace Menu_Helpers;

      if (dynamic_cast<InputConnection *> (c) == 0) {
            return;
      }

      MenuList& citems = input_menu.items();
      
      if (c->nports() == _route->n_inputs()) {

            citems.push_back (CheckMenuElem (c->name(), bind (mem_fun(*this, &MixerStrip::connection_input_chosen), c)));
            
            ARDOUR::Connection *current = _route->input_connection();
            
            if (current == c) {
                  ignore_toggle = true;
                  dynamic_cast<CheckMenuItem *> (&citems.back())->set_active (true);
                  ignore_toggle = false;
            }
      }
}

void
MixerStrip::add_connection_to_output_menu (ARDOUR::Connection* c)
{
      using namespace Menu_Helpers;

      if (dynamic_cast<OutputConnection *> (c) == 0) {
            return;
      }

      if (c->nports() == _route->n_outputs()) {

            MenuList& citems = output_menu.items();
            citems.push_back (CheckMenuElem (c->name(), bind (mem_fun(*this, &MixerStrip::connection_output_chosen), c)));
            
            ARDOUR::Connection *current = _route->output_connection();
            
            if (current == c) {
                  ignore_toggle = true;
                  dynamic_cast<CheckMenuItem *> (&citems.back())->set_active (true);
                  ignore_toggle = false;
            }
      }
}

void
MixerStrip::update_diskstream_display ()
{
      map_frozen ();
      update_input_display ();

      if (is_audio_track()) {

            if (input_selector) {
                  input_selector->hide_all ();
            }

            show_route_color ();

      } else {

            show_passthru_color ();
      }
}

void
MixerStrip::connect_to_pan ()
{
      ENSURE_GUI_THREAD(mem_fun(*this, &MixerStrip::connect_to_pan));

      panstate_connection.disconnect ();
      panstyle_connection.disconnect ();

      if (!_route->panner().empty()) {
            StreamPanner* sp = _route->panner().front();

            panstate_connection = sp->automation().automation_state_changed.connect (mem_fun(panners, &PannerUI::pan_automation_state_changed));
            panstyle_connection = sp->automation().automation_style_changed.connect (mem_fun(panners, &PannerUI::pan_automation_style_changed));
      }

      panners.pan_changed (this);
}

void
MixerStrip::update_input_display ()
{
      ARDOUR::Connection *c;

      if ((c = _route->input_connection()) != 0) {
            input_label.set_text (c->name());
      } else {
            switch (_width) {
            case Wide:
                  input_label.set_text (_(" Input"));
                  break;
            case Narrow:
                  input_label.set_text (_("I"));
                  break;
            }
      }
      panners.setup_pan ();
}

void
MixerStrip::update_output_display ()
{
      ARDOUR::Connection *c;

      if ((c = _route->output_connection()) != 0) {
            output_label.set_text (c->name());
      } else {
            switch (_width) {
            case Wide:
                  output_label.set_text (_("Output"));
                  break;
            case Narrow:
                  output_label.set_text (_("O"));
                  break;
            }
      }
      gpm.setup_meters ();
      panners.setup_pan ();
}

void
MixerStrip::fast_update ()
{
      gpm.update_meters ();
}

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

void
MixerStrip::input_changed (IOChange change, void *src)
{
      Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &MixerStrip::update_input_display));
      set_width(_width, this);
}

void
MixerStrip::output_changed (IOChange change, void *src)
{
      Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &MixerStrip::update_output_display));
      set_width(_width, this);
}


void 
MixerStrip::comment_editor_done_editing() 
{
      string str =  comment_area->get_buffer()->get_text();
      if (_route->comment() != str) {
            _route->set_comment (str, this);

            switch (_width) {
               
            case Wide:
                  if (! str.empty()) {
                          comment_button.modify_bg (STATE_NORMAL, color());
                        ((Gtk::Label*)comment_button.get_child())->set_text (_("*Comments*"));
                  } else {
                          comment_button.unset_bg (STATE_NORMAL);
                        ((Gtk::Label*)comment_button.get_child())->set_text (_("Comments"));
                  }
                  break;
               
            case Narrow:
                  if (! str.empty()) {
                          comment_button.modify_bg (STATE_NORMAL, color());
                        ((Gtk::Label*)comment_button.get_child())->set_text (_("*Cmt*"));
                  } else {
                          comment_button.unset_bg (STATE_NORMAL);
                        ((Gtk::Label*)comment_button.get_child())->set_text (_("Cmt"));
                  } 
                  break;
            }
             
            ARDOUR_UI::instance()->tooltips().set_tip (comment_button, 
                        str.empty() ? _("Click to Add/Edit Comments") : str);
      }

}

void
MixerStrip::comment_button_clicked ()
{
      if (comment_window == 0) {
            setup_comment_editor ();
      }

    int x, y, cw_width, cw_height;

      if (comment_window->is_visible()) {
            comment_window->hide ();
            return;
      }

      comment_window->get_size (cw_width, cw_height);
      comment_window->get_position(x, y);
      comment_window->move(x, y - (cw_height / 2) - 45);
      /* 
         half the dialog height minus the comments button height 
         with some window decoration fudge thrown in.
      */

      comment_window->show();
      comment_window->present();
}

void
MixerStrip::setup_comment_editor ()
{
      string title;
      title = _route->name();
      title += _(": comment editor");

      comment_window = new ArdourDialog (title, false);
      comment_window->set_position (Gtk::WIN_POS_MOUSE);
      comment_window->set_skip_taskbar_hint (true);
      comment_window->signal_hide().connect (mem_fun(*this, &MixerStrip::comment_editor_done_editing));

      comment_area = manage (new TextView());
      comment_area->set_name ("MixerTrackCommentArea");
      comment_area->set_size_request (110, 178);
      comment_area->set_wrap_mode (WRAP_WORD);
      comment_area->set_editable (true);
      comment_area->get_buffer()->set_text (_route->comment());
      comment_area->show ();

      comment_window->get_vbox()->pack_start (*comment_area);
      comment_window->get_action_area()->hide();
}

void
MixerStrip::comment_changed (void *src)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &MixerStrip::comment_changed), src));
      
      if (src != this) {
            ignore_comment_edit = true;
            if (comment_area) {
                  comment_area->get_buffer()->set_text (_route->comment());
            }
            ignore_comment_edit = false;
      }
}

void
MixerStrip::set_mix_group (RouteGroup *rg)
{
      _route->set_mix_group (rg, this);
}

void
MixerStrip::add_mix_group_to_menu (RouteGroup *rg, RadioMenuItem::Group* group)
{
      using namespace Menu_Helpers;

      MenuList& items = group_menu->items();

      items.push_back (RadioMenuElem (*group, rg->name(), bind (mem_fun(*this, &MixerStrip::set_mix_group), rg)));

      if (_route->mix_group() == rg) {
            static_cast<RadioMenuItem*>(&items.back())->set_active ();
      }
}

bool
MixerStrip::select_mix_group (GdkEventButton *ev)
{
      using namespace Menu_Helpers;

      if (group_menu == 0) {
              group_menu = new Menu;
      } 
      group_menu->set_name ("ArdourContextMenu");
      MenuList& items = group_menu->items();
      RadioMenuItem::Group group;

      switch (ev->button) {
      case 1:

            items.clear ();
            items.push_back (RadioMenuElem (group, _("No group"), bind (mem_fun(*this, &MixerStrip::set_mix_group), (RouteGroup *) 0)));

            _session.foreach_mix_group (bind (mem_fun (*this, &MixerStrip::add_mix_group_to_menu), &group));

            group_menu->popup (1, ev->time);
            break;

      default:
            break;
      }
      
      return true;
}     

void
MixerStrip::mix_group_changed (void *ignored)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &MixerStrip::mix_group_changed), ignored));
      
      RouteGroup *rg = _route->mix_group();
      
      if (rg) {
            group_label.set_text (rg->name());
      } else {
            switch (_width) {
            case Wide:
                  group_label.set_text (_("Grp"));
                  break;
            case Narrow:
                  group_label.set_text (_("~G"));
                  break;
            }
      }
}


void 
MixerStrip::route_gui_changed (string what_changed, void* ignored)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &MixerStrip::route_gui_changed), what_changed, ignored));
      
      if (what_changed == "color") {
            if (set_color_from_route () == 0) {
                  show_route_color ();
            }
      }
}

void
MixerStrip::show_route_color ()
{
      name_button.modify_bg (STATE_NORMAL, color());
      top_event_box.modify_bg (STATE_NORMAL, color());
      route_active_changed ();
}

void
MixerStrip::show_passthru_color ()
{
      route_active_changed ();
}

void
MixerStrip::build_route_ops_menu ()
{
      using namespace Menu_Helpers;
      route_ops_menu = manage (new Menu);
      route_ops_menu->set_name ("ArdourContextMenu");

      MenuList& items = route_ops_menu->items();

      items.push_back (MenuElem (_("Rename"), mem_fun(*this, &RouteUI::route_rename)));
      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 (CheckMenuElem (_("Invert Polarity"), mem_fun (*this, &RouteUI::toggle_polarity)));
      polarity_menu_item = dynamic_cast<CheckMenuItem *> (&items.back());
      polarity_menu_item->set_active (_route->phase_invert());
      items.push_back (CheckMenuElem (_("Protect against denormals"), mem_fun (*this, &RouteUI::toggle_denormal_protection)));
      denormal_menu_item = dynamic_cast<CheckMenuItem *> (&items.back());
      denormal_menu_item->set_active (_route->denormal_protection());

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

      items.push_back (SeparatorElem());
      items.push_back (MenuElem (_("Remove"), mem_fun(*this, &RouteUI::remove_this_route)));
}

gint
MixerStrip::name_button_button_press (GdkEventButton* ev)
{
      if (ev->button == 1) {
            list_route_operations ();

            Menu_Helpers::MenuList& items = route_ops_menu->items();
            /* do not allow rename if the track is record-enabled */
            static_cast<MenuItem*> (&items.front())->set_sensitive (!_route->record_enabled());

            route_ops_menu->popup (1, ev->time);
      }
      return FALSE;
}

void
MixerStrip::list_route_operations ()
{
      if (route_ops_menu == 0) {
            build_route_ops_menu ();
      }
      
      refresh_remote_control_menu();
}


void
MixerStrip::speed_adjustment_changed ()
{
      /* since there is a usable speed adjustment, there has to be a diskstream */
      if (!ignore_speed_adjustment) {
            get_diskstream()->set_speed (speed_adjustment.get_value());
      }
}

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

void
MixerStrip::update_speed_display ()
{
      float val;
      
      val = get_diskstream()->speed();

      if (val != 1.0) {
            speed_spinner.set_name ("MixerStripSpeedBaseNotOne");
      } else {
            speed_spinner.set_name ("MixerStripSpeedBase");
      }

      if (speed_adjustment.get_value() != val) {
            ignore_speed_adjustment = true;
            speed_adjustment.set_value (val);
            ignore_speed_adjustment = false;
      }
}                 


void
MixerStrip::set_selected (bool yn)
{
      AxisView::set_selected (yn);
      if (_selected) {
            global_frame.set_shadow_type (Gtk::SHADOW_ETCHED_OUT);
            global_frame.set_name ("MixerStripSelectedFrame");
      } else {
            global_frame.set_shadow_type (Gtk::SHADOW_IN);
            global_frame.set_name ("MixerStripFrame");
      }
      global_frame.queue_draw ();
}

void
MixerStrip::name_changed (void *src)
{
      switch (_width) {
      case Wide:
            RouteUI::name_changed (src);
            break;
      case Narrow:
              name_label.set_text (PBD::short_version (_route->name(), 5));
            break;
      }
      if (_route->phase_invert()) {
              name_label.set_text (X_("Ø ") + name_label.get_text());
      }
}

void
MixerStrip::width_clicked ()
{
      switch (_width) {
      case Wide:
            set_width (Narrow, this);
            break;
      case Narrow:
            set_width (Wide, this);
            break;
      }
}

void
MixerStrip::hide_clicked ()
{
    // LAME fix to reset the button status for when it is redisplayed (part 1)
    hide_button.set_sensitive(false);
    
      if (_embedded) {
             Hiding(); /* EMIT_SIGNAL */
      } else {
            _mixer.hide_strip (this);
      }
      
    // (part 2)
      hide_button.set_sensitive(true);
}

void
MixerStrip::set_embedded (bool yn)
{
      _embedded = yn;
}

void
MixerStrip::map_frozen ()
{
      ENSURE_GUI_THREAD (mem_fun(*this, &MixerStrip::map_frozen));

        boost::shared_ptr<AudioTrack> at = audio_track();

      if (at) {
            switch (at->freeze_state()) {
            case AudioTrack::Frozen:
                  pre_redirect_box.set_sensitive (false);
                  post_redirect_box.set_sensitive (false);
                  speed_spinner.set_sensitive (false);
                  break;
            default:
                  pre_redirect_box.set_sensitive (true);
                  post_redirect_box.set_sensitive (true);
                  speed_spinner.set_sensitive (true);
                  // XXX need some way, maybe, to retoggle redirect editors
                  break;
            }
      }
      
      hide_redirect_editors ();
}

void
MixerStrip::hide_redirect_editors ()
{
      _route->foreach_redirect (this, &MixerStrip::hide_redirect_editor);
}

void
MixerStrip::hide_redirect_editor (boost::shared_ptr<Redirect> redirect)
{
      void* gui = redirect->get_gui ();
      
      if (gui) {
            static_cast<Gtk::Widget*>(gui)->hide ();
      }
}

void
MixerStrip::route_active_changed ()
{
      RouteUI::route_active_changed ();

      if (is_audio_track()) {
            if (_route->active()) {
                  set_name ("AudioTrackStripBase");
                  gpm.set_meter_strip_name ("AudioTrackMetrics");
            } else {
                  set_name ("AudioTrackStripBaseInactive");
                  gpm.set_meter_strip_name ("AudioTrackMetricsInactive");
            }
            gpm.set_fader_name ("AudioTrackFader");
      } else { // FIXME: assumed audio bus
            if (_route->active()) {
                  set_name ("AudioBusStripBase");
                  gpm.set_meter_strip_name ("AudioBusMetrics");
            } else {
                  set_name ("AudioBusStripBaseInactive");
                  gpm.set_meter_strip_name ("AudioBusMetricsInactive");
            }
            gpm.set_fader_name ("AudioBusFader");
      }
}

RouteGroup*
MixerStrip::mix_group() const
{
      return _route->mix_group();
}

void
MixerStrip::engine_stopped ()
{
}

void
MixerStrip::engine_running ()
{
}

void
MixerStrip::meter_changed (void *src)
{

      ENSURE_GUI_THREAD (bind (mem_fun(*this, &MixerStrip::meter_changed), src));

            switch (_route->meter_point()) {
            case MeterInput:
                  meter_point_label.set_text (_("input"));
                  break;
                  
            case MeterPreFader:
                  meter_point_label.set_text (_("pre"));
                  break;
                  
            case MeterPostFader:
                  meter_point_label.set_text (_("post"));
                  break;
            }

            gpm.setup_meters ();
            // reset peak when meter point changes
            gpm.reset_peak_display();
            set_width(_width, this);
}


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