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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.

    $Id: mixer_strip.cc,v 1.177 2006/01/27 23:40:17 essej Exp $
*/

#include <cmath>
#include <glib.h>

#include <sigc++/bind.h>

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

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

#include "ardour_ui.h"
#include "ardour_dialog.h"
#include "ardour_message.h"
#include "mixer_strip.h"
#include "mixer_ui.h"
#include "keyboard.h"
#include "plugin_selector.h"
#include "public_editor.h"

#include "plugin_ui.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 Gtk;
using namespace Gtkmmext;

/* XPM */
static const gchar * small_x_xpm[] = {
"11 11 2 1",
"     c None",
".    c #cccc99",
"           ",
"           ",
"  .     .  ",
"   .   .   ",
"    . .    ",
"     .     ",
"    . .    ",
"   .   .   ",
"  .     .  ",
"           ",
"           "};

/* XPM */
static const gchar * lr_xpm[] = {
"11 11 2 1",
"     c None",
".    c #cccc99",
"           ",
"           ",
"   .   .   ",
"  .     .  ",
" .       . ",
"...........",
" .       . ",
"  .     .  ",
"   .   .   ",
"           ",
"           "};

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);
      }
}

MixerStrip::MixerStrip (Mixer_UI& mx, Session& sess, Route& rt, bool in_mixer)
      : AxisView(sess),
        RouteUI (rt, sess, _("mute"), _("solo"), _("RECORD")),
        _mixer(mx),
        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 (8, 2),
        gain_automation_style_button (""),
        gain_automation_state_button (""),
        pan_automation_style_button (""),
        pan_automation_state_button (""),
        polarity_button (_("polarity")),
        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;

      width_button.add (*(manage (new Gtk::Pixmap (lr_xpm))));
      hide_button.add (*(manage (new Gtk::Pixmap (small_x_xpm))));


      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");

      rec_enable_button->set_name ("MixerRecordEnableButton");
      rec_enable_button->unset_flags (GTK_CAN_FOCUS);

      solo_button->set_name ("MixerSoloButton");
      mute_button->set_name ("MixerMuteButton");
      gain_automation_style_button.set_name ("MixerAutomationModeButton");
      gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
      pan_automation_style_button.set_name ("MixerAutomationModeButton");
      pan_automation_state_button.set_name ("MixerAutomationPlaybackButton");
      polarity_button.set_name ("MixerPhaseInvertButton");

      ARDOUR_UI::instance()->tooltips().set_tip (pan_automation_state_button, _("Pan automation mode"));
      ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("Gain automation mode"));

      ARDOUR_UI::instance()->tooltips().set_tip (pan_automation_style_button, _("Pan automation type"));
      ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("Gain automation type"));

      hide_button.set_events (hide_button.get_events() & ~(GDK_ENTER_NOTIFY_MASK|GDK_LEAVE_NOTIFY_MASK));

      width_button.unset_flags (GTK_CAN_FOCUS);
      hide_button.unset_flags (GTK_CAN_FOCUS);
      input_button.unset_flags (GTK_CAN_FOCUS);
      output_button.unset_flags (GTK_CAN_FOCUS);
      solo_button->unset_flags (GTK_CAN_FOCUS);
      mute_button->unset_flags (GTK_CAN_FOCUS);
      gain_automation_style_button.unset_flags (GTK_CAN_FOCUS);
      gain_automation_state_button.unset_flags (GTK_CAN_FOCUS);
      pan_automation_style_button.unset_flags (GTK_CAN_FOCUS);
      pan_automation_state_button.unset_flags (GTK_CAN_FOCUS);
      polarity_button.unset_flags (GTK_CAN_FOCUS);

      button_table.set_homogeneous (true);

      button_table.attach (name_button, 0, 2, 0, 1);
      button_table.attach (group_button, 0, 2, 1, 2);
      button_table.attach (input_button, 0, 2, 2, 3);

      button_table.attach (polarity_button, 0, 2, 3, 4);

      button_table.attach (*solo_button, 0, 1, 4, 5);
      button_table.attach (*mute_button, 1, 2, 4, 5);

      // button_table.attach (gain_automation_style_button, 0, 1, 5, 6);
      button_table.attach (gain_automation_state_button, 0, 1, 5, 6);
      // button_table.attach (pan_automation_style_button, 0, 1, 6, 7);
      button_table.attach (pan_automation_state_button, 1, 2, 5, 6);

      using namespace Menu_Helpers;
      
      gain_astate_menu.items().push_back (MenuElem (_("off"), 
                                          bind (slot (_route, &IO::set_gain_automation_state), (AutoState) Off)));
      gain_astate_menu.items().push_back (MenuElem (_("play"),
                                          bind (slot (_route, &IO::set_gain_automation_state), (AutoState) Play)));
      gain_astate_menu.items().push_back (MenuElem (_("write"),
                                          bind (slot (_route, &IO::set_gain_automation_state), (AutoState) Write)));
      gain_astate_menu.items().push_back (MenuElem (_("touch"),
                                          bind (slot (_route, &IO::set_gain_automation_state), (AutoState) Touch)));
      
      gain_astyle_menu.items().push_back (MenuElem (_("trim")));
      gain_astyle_menu.items().push_back (MenuElem (_("abs")));

      pan_astate_menu.items().push_back (MenuElem (_("off"), 
                                         bind (slot (_route.panner(), &Panner::set_automation_state), (AutoState) Off)));
      pan_astate_menu.items().push_back (MenuElem (_("play"),
                                         bind (slot (_route.panner(), &Panner::set_automation_state), (AutoState) Play)));
      pan_astate_menu.items().push_back (MenuElem (_("write"),
                                         bind (slot (_route.panner(), &Panner::set_automation_state), (AutoState) Write)));
      pan_astate_menu.items().push_back (MenuElem (_("touch"),
                                         bind (slot (_route.panner(), &Panner::set_automation_state), (AutoState) Touch)));

      pan_astyle_menu.items().push_back (MenuElem (_("trim")));
      pan_astyle_menu.items().push_back (MenuElem (_("abs")));
      
      gain_astate_menu.set_name ("ArdourContextMenu");
      gain_astyle_menu.set_name ("ArdourContextMenu");
      pan_astate_menu.set_name ("ArdourContextMenu");
      pan_astyle_menu.set_name ("ArdourContextMenu");

      ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("gain automation mode"));
      ARDOUR_UI::instance()->tooltips().set_tip (pan_automation_style_button, _("pan automation mode"));
      ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("gain automation state"));
      ARDOUR_UI::instance()->tooltips().set_tip (pan_automation_state_button, _("pan automation state"));

      if (is_audio_track()) {
            
            AudioTrack* at = dynamic_cast<AudioTrack*>(&_route);

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

            speed_adjustment.value_changed.connect (slot (*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"));

            speed_spinner.show ();
            speed_frame.show  ();

            button_table.attach (speed_frame, 0, 2, 6, 7);
            button_table.attach (*rec_enable_button, 0, 2, 7, 8);
      }
      
      name_button.add (name_label);
      name_button.set_name ("MixerNameButton");
      Gtkmmext::set_usize_to_display_given_text (name_button, "longest label", 2, 2);

      name_label.set_name ("MixerNameButtonLabel");
      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.clicked.connect (slot (*this, &MixerStrip::comment_button_clicked));
      
      global_vpacker.set_border_width (3);
      global_vpacker.set_spacing (2);

      Gtk::VBox *whvbox = manage (new Gtk::VBox);

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

      width_button.clicked.connect (slot (*this, &MixerStrip::width_clicked));
      hide_button.clicked.connect (slot (*this, &MixerStrip::hide_clicked));

      width_hide_box.pack_start (width_button, false, true);
      width_hide_box.pack_end (hide_button, false, true);

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

      global_vpacker.pack_start (*whvbox, false, false);
      global_vpacker.pack_start (button_table, false, false);
      global_vpacker.pack_start (pre_redirect_box, true, true);
      global_vpacker.pack_start (gpm, false, false);
      global_vpacker.pack_start (post_redirect_box, true, true);
      global_vpacker.pack_start (panners, false, false);
      global_vpacker.pack_start (output_button, false, false);
      global_vpacker.pack_start (comment_button, 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);

      whvbox->show_all ();
      name_label.show ();
      group_label.show();
      input_label.show ();
      output_label.show ();
      pre_redirect_box.show_all ();
      post_redirect_box.show_all ();
      button_table.show ();
      comment_button.show ();
      name_button.show ();
      input_button.show ();
      group_button.show ();
      output_button.show ();
      rec_enable_button->show ();
      solo_button->show ();
      mute_button->show ();
      gain_automation_style_button.show ();
      gain_automation_state_button.show ();
      pan_automation_style_button.show ();
      pan_automation_state_button.show ();
      polarity_button.show ();
      global_vpacker.show ();
      global_frame.show ();

      _packed = false;
      _embedded = false;

      _route.input_changed.connect (slot (*this, &MixerStrip::input_changed));
      _route.output_changed.connect (slot (*this, &MixerStrip::output_changed));
      _route.mute_changed.connect (slot (*this, &RouteUI::mute_changed));
      _route.solo_changed.connect (slot (*this, &RouteUI::solo_changed));
      _route.solo_safe_changed.connect (slot (*this, &RouteUI::solo_changed));
      _route.mix_group_changed.connect (slot (*this, &MixerStrip::mix_group_changed));
      _route.gain_automation_curve().automation_state_changed.connect (slot (*this, &MixerStrip::gain_automation_state_changed));
      _route.gain_automation_curve().automation_style_changed.connect (slot (*this, &MixerStrip::gain_automation_style_changed));
      _route.panner().Changed.connect (slot (*this, &MixerStrip::connect_to_pan));

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

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

      input_button.button_release_event.connect (slot (*this, &MixerStrip::input_press));
      output_button.button_release_event.connect (slot (*this, &MixerStrip::output_press));

      rec_enable_button->button_press_event.connect (slot (*this, &RouteUI::rec_enable_press));
      solo_button->button_press_event.connect (slot (*this, &RouteUI::solo_press));
      solo_button->button_release_event.connect (slot (*this, &RouteUI::solo_release));
      mute_button->button_press_event.connect (slot (*this, &RouteUI::mute_press));
      mute_button->button_release_event.connect (slot (*this, &RouteUI::mute_release));

      gain_automation_style_button.button_press_event.connect_after (slot (do_not_propagate));
      pan_automation_style_button.button_press_event.connect_after (slot (do_not_propagate));
      gain_automation_state_button.button_press_event.connect_after (slot (do_not_propagate));
      pan_automation_state_button.button_press_event.connect_after (slot (do_not_propagate));

      gain_automation_style_button.button_press_event.connect (slot (*this, &MixerStrip::gain_automation_style_button_event));
      gain_automation_style_button.button_release_event.connect (slot (*this, &MixerStrip::gain_automation_style_button_event));
      pan_automation_style_button.button_press_event.connect (slot (*this, &MixerStrip::pan_automation_style_button_event));
      pan_automation_style_button.button_release_event.connect (slot (*this, &MixerStrip::pan_automation_style_button_event));

      gain_automation_state_button.button_press_event.connect (slot (*this, &MixerStrip::gain_automation_state_button_event));
      gain_automation_state_button.button_release_event.connect (slot (*this, &MixerStrip::gain_automation_state_button_event));
      pan_automation_state_button.button_press_event.connect (slot (*this, &MixerStrip::pan_automation_state_button_event));
      pan_automation_state_button.button_release_event.connect (slot (*this, &MixerStrip::pan_automation_state_button_event));

      polarity_button.toggled.connect (slot (*this, &MixerStrip::polarity_toggled));

      name_button.button_release_event.connect (slot (*this, &MixerStrip::name_button_button_release));

      group_button.button_press_event.connect (slot (*this, &MixerStrip::select_mix_group));

      _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);
      gain_automation_state_changed ();
      pan_automation_state_changed ();
      connect_to_pan ();

      panners.setup_pan ();

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

      /* XXX hack: no phase invert changed signal */

      polarity_button.set_active (_route.phase_invert());

      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 ((prop = xml_node->property ("strip_width")) != 0) {
            if (prop->value() == "wide") {
                  set_width (Wide);
            } else if (prop->value() == "narrow") {
                  set_width (Narrow);
            }
            else {
                  error << compose(_("unknown strip width \"%1\" in XML GUI information"), prop->value()) << endmsg;
                  set_width (Wide);
            }
      }
      else {
            set_width (Wide);
      }

      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)
{
      /* 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);
      
      if (_width == w) {
            return;
      }

      ensure_xml_node ();
      
      _width = w;

      switch (w) {
      case Wide:
            set_usize (-1, -1);
            xml_node->add_property ("strip_width", "wide");

            static_cast<Gtk::Label*> (rec_enable_button->get_child())->set_text (_("RECORD"));
            static_cast<Gtk::Label*> (mute_button->get_child())->set_text (_("mute"));
            static_cast<Gtk::Label*> (solo_button->get_child())->set_text (_("solo"));
            static_cast<Gtk::Label*> (comment_button.get_child())->set_text (_("comments"));
            static_cast<Gtk::Label*> (gain_automation_style_button.get_child())->set_text (astyle_string(_route.gain_automation_curve().automation_style()));
            static_cast<Gtk::Label*> (gain_automation_state_button.get_child())->set_text (astate_string(_route.gain_automation_curve().automation_state()));
            static_cast<Gtk::Label*> (pan_automation_style_button.get_child())->set_text (astyle_string(_route.panner().automation_style()));
            static_cast<Gtk::Label*> (pan_automation_state_button.get_child())->set_text (astate_string(_route.panner().automation_state()));
            static_cast<Gtk::Label*> (polarity_button.get_child())->set_text (_("polarity"));
            Gtkmmext::set_usize_to_display_given_text (name_button, "long", 2, 2);
            break;

      case Narrow:
            set_usize (50, -1);
            xml_node->add_property ("strip_width", "narrow");

            static_cast<Gtk::Label*> (rec_enable_button->get_child())->set_text (_("REC"));
            static_cast<Gtk::Label*> (mute_button->get_child())->set_text (_("m"));
            static_cast<Gtk::Label*> (solo_button->get_child())->set_text (_("s"));
            static_cast<Gtk::Label*> (comment_button.get_child())->set_text (_("cmt"));
            static_cast<Gtk::Label*> (gain_automation_style_button.get_child())->set_text (short_astyle_string(_route.gain_automation_curve().automation_style()));
            static_cast<Gtk::Label*> (gain_automation_state_button.get_child())->set_text (short_astate_string(_route.gain_automation_curve().automation_state()));
            static_cast<Gtk::Label*> (pan_automation_style_button.get_child())->set_text (short_astyle_string(_route.panner().automation_style()));
            static_cast<Gtk::Label*> (pan_automation_state_button.get_child())->set_text (short_astate_string(_route.panner().automation_state()));
            static_cast<Gtk::Label*> (polarity_button.get_child())->set_text (_("pol"));
            Gtkmmext::set_usize_to_display_given_text (name_button, "longest label", 2, 2);
            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()) {
            ArdourMessage msg (NULL, "nojackdialog", _("Not connected to JACK - no I/O changes are possible"));
            return TRUE;
      }

      MenuList& citems = output_menu.items();
      output_menu.set_name ("ArdourContextMenu");
      citems.clear();

      citems.push_back (MenuElem (_("Edit"), slot (*this, &MixerStrip::edit_output_configuration)));
      citems.push_back (SeparatorElem());
      citems.push_back (MenuElem (_("Disconnect"), slot (*(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);

      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()) {
            ArdourMessage msg (NULL, "nojackdialog", _("Not connected to JACK - no I/O changes are possible"));
            return TRUE;
      }

#if ADVANCED_ROUTE_DISKSTREAM_CONNECTIVITY
      if (is_audio_track()) {
            citems.push_back (MenuElem (_("Track"), slot (*this, &MixerStrip::select_stream_input)));
      }
#endif
      citems.push_back (MenuElem (_("Edit"), slot (*this, &MixerStrip::edit_input_configuration)));
      citems.push_back (SeparatorElem());
      citems.push_back (MenuElem (_("Disconnect"), slot (*(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);

      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 (slot (*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 (slot (*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::select_stream_input ()
{
      using namespace Menu_Helpers;

      Menu *stream_menu = manage (new Menu);
      MenuList& items = stream_menu->items();
      stream_menu->set_name ("ArdourContextMenu");
      
      Session::DiskStreamList streams = _session.disk_streams();

      for (Session::DiskStreamList::iterator i = streams.begin(); i != streams.end(); ++i) {

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

                  items.push_back (CheckMenuElem ((*i)->name(), bind (slot (*this, &MixerStrip::stream_input_chosen), *i)));
                  
                  if (get_diskstream() == *i) {
                        ignore_toggle = true;
                        static_cast<CheckMenuItem *> (items.back())->set_active (true);
                        ignore_toggle = false;
                  } 
            }
      }
      
      stream_menu->popup (1, 0);
}

void
MixerStrip::stream_input_chosen (DiskStream *stream)
{
      if (is_audio_track()) {
            audio_track()->set_diskstream (*stream, this);
      }
}

void
MixerStrip::update_diskstream_display ()
{
      if (is_audio_track()) {

            map_frozen ();

            update_input_display ();

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

            show_route_color ();

      } else {

            map_frozen ();

            update_input_display ();
            show_passthru_color ();
      }
}

void
MixerStrip::connect_to_pan ()
{
      ENSURE_GUI_THREAD(slot (*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 (slot (*this, &MixerStrip::pan_automation_state_changed));
            panstyle_connection = sp->automation().automation_style_changed.connect (slot (*this, &MixerStrip::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 (_("IN"));
                  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 (_("OUT"));
                  break;
            }
      }

      gpm.setup_meters ();
      panners.setup_pan ();
}

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

void
MixerStrip::fast_update ()
{
      if (_session.meter_falloff() > 0.0f) {
            gpm.update_meters_falloff ();
      }
}

gint
MixerStrip::gain_automation_state_button_event (GdkEventButton *ev)
{
      if (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_2BUTTON_PRESS) {
            return TRUE;
      }
      
      switch (ev->button) {
      case 1:
            switch (ev->button) {
            case 1:
                  gain_astate_menu.popup (1, ev->time);
                  break;
            default:
                  break;
            }
      }

      return TRUE;
}

gint
MixerStrip::gain_automation_style_button_event (GdkEventButton *ev)
{
      if (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_2BUTTON_PRESS) {
            return TRUE;
      }

      switch (ev->button) {
      case 1:
            gain_astyle_menu.popup (1, ev->time);
            break;
      default:
            break;
      }
      return TRUE;
}

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

      if (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_2BUTTON_PRESS) {
            return TRUE;
      }

      switch (ev->button) {
      case 1:
            pan_astate_menu.popup (1, ev->time);
            break;
      default:
            break;
      }

      return TRUE;
}

gint
MixerStrip::pan_automation_style_button_event (GdkEventButton *ev)
{
      switch (ev->button) {
      case 1:
            pan_astyle_menu.popup (1, ev->time);
            break;
      default:
            break;
      }
      return TRUE;
}

string
MixerStrip::astate_string (AutoState state)
{
      return _astate_string (state, false);
}

string
MixerStrip::short_astate_string (AutoState state)
{
      return _astate_string (state, true);
}

string
MixerStrip::_astate_string (AutoState state, bool shrt)
{
      string sstr;

      switch (state) {
      case Off:
            sstr = (shrt ? "--" : _("off"));
            break;
      case Play:
            sstr = (shrt ? "P" : _("aplay"));
            break;
      case Touch:
            sstr = (shrt ? "T" : _("touch"));
            break;
      case Write:
            sstr = (shrt ? "W" : _("awrite"));
            break;
      }

      return sstr;
}

string
MixerStrip::astyle_string (AutoStyle style)
{
      return _astyle_string (style, false);
}

string
MixerStrip::short_astyle_string (AutoStyle style)
{
      return _astyle_string (style, true);
}

string
MixerStrip::_astyle_string (AutoStyle style, bool shrt)
{
      if (style & Trim) {
            return _("trim");
      } else {
            /* XXX it might different in different languages */

            return (shrt ? _("abs") : _("abs"));
      }
}

void
MixerStrip::diskstream_changed (void *src)
{
      Gtkmmext::UI::instance()->call_slot (slot (*this, &MixerStrip::update_diskstream_display));
}     

void
MixerStrip::gain_automation_style_changed ()
{
      switch (_width) {
      case Wide:
            static_cast<Gtk::Label*> (gain_automation_style_button.get_child())->set_text (astyle_string(_route.gain_automation_curve().automation_style()));
            break;
      case Narrow:
            static_cast<Gtk::Label*> (gain_automation_style_button.get_child())->set_text (short_astyle_string(_route.gain_automation_curve().automation_style()));
            break;
      }
}

void
MixerStrip::gain_automation_state_changed ()
{
      ENSURE_GUI_THREAD(slot (*this, &MixerStrip::gain_automation_state_changed));
      
      bool x;

      switch (_width) {
      case Wide:
            static_cast<Gtk::Label*> (gain_automation_state_button.get_child())->set_text (astate_string(_route.gain_automation_curve().automation_state()));
            break;
      case Narrow:
            static_cast<Gtk::Label*> (gain_automation_state_button.get_child())->set_text (short_astate_string(_route.gain_automation_curve().automation_state()));
            break;
      }

      x = (_route.gain_automation_state() != Off);
      
      if (gain_automation_state_button.get_active() != x) {
            ignore_toggle = true;
            gain_automation_state_button.set_active (x);
            ignore_toggle = false;
      }

      gpm.update_gain_sensitive ();
      
      /* start watching automation so that things move */
      
      gain_watching.disconnect();

      if (x) {
            gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (slot (gpm, &GainMeter::effective_gain_display));
      }
}

void
MixerStrip::pan_automation_style_changed ()
{
      ENSURE_GUI_THREAD(slot (*this, &MixerStrip::pan_automation_style_changed));
      
      switch (_width) {
      case Wide:
            static_cast<Gtk::Label*> (pan_automation_style_button.get_child())->set_text (astyle_string(_route.panner().automation_style()));
            break;
      case Narrow:
            static_cast<Gtk::Label*> (pan_automation_style_button.get_child())->set_text (short_astyle_string(_route.panner().automation_style()));
            break;
      }
}

void
MixerStrip::pan_automation_state_changed ()
{
      ENSURE_GUI_THREAD(slot (*this, &MixerStrip::pan_automation_state_changed));
      
      bool x;

      switch (_width) {
      case Wide:
            static_cast<Gtk::Label*> (pan_automation_state_button.get_child())->set_text (astate_string(_route.panner().automation_state()));
            break;
      case Narrow:
            static_cast<Gtk::Label*> (pan_automation_state_button.get_child())->set_text (short_astate_string(_route.panner().automation_state()));
            break;
      }

      /* when creating a new session, we get to create busses (and
         sometimes tracks) with no outputs by the time they get
         here.
      */

      if (_route.panner().empty()) {
            return;
      }

      x = (_route.panner().front()->automation().automation_state() != Off);

      if (pan_automation_state_button.get_active() != x) {
            ignore_toggle = true;
            pan_automation_state_button.set_active (x);
            ignore_toggle = false;
      }

      panners.update_pan_sensitive ();
      
      /* start watching automation so that things move */
      
      pan_watching.disconnect();

      if (x) {
            pan_watching = ARDOUR_UI::RapidScreenUpdate.connect (slot (panners, &PannerUI::effective_pan_display));
      }
}

void
MixerStrip::input_changed (IOChange change, void *src)
{
      Gtkmmext::UI::instance()->call_slot (slot (*this, &MixerStrip::update_input_display));
}

void
MixerStrip::output_changed (IOChange change, void *src)
{
      Gtkmmext::UI::instance()->call_slot (slot (*this, &MixerStrip::update_output_display));
}

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

      if (comment_window->is_visible()) {
            comment_window->hide ();
      } else {
            comment_window->set_position (GTK_WIN_POS_MOUSE);
            comment_window->show_all ();
      }
}

void
MixerStrip::setup_comment_editor ()
{
      comment_window = new Window (GTK_WINDOW_TOPLEVEL);

      string str;
      str = _route.name();
      str += _(": comment editor");
      comment_window->set_title (str);

      comment_area.set_name ("MixerTrackCommentArea");
      comment_area.set_editable (true);
      comment_area.focus_in_event.connect (slot (ARDOUR_UI::generic_focus_in_event));
      comment_area.focus_out_event.connect (slot (ARDOUR_UI::generic_focus_out_event));
      comment_area.changed.connect (slot (*this, &MixerStrip::comment_edited));
      comment_area.button_release_event.connect_after (slot (do_not_propagate));
      comment_area.show ();

      comment_window->add (comment_area);
      comment_window->delete_event.connect (bind (slot (just_hide_it), comment_window));
}

void
MixerStrip::comment_changed (void *src)
{
      ENSURE_GUI_THREAD(bind (slot (*this, &MixerStrip::comment_changed), src));
      
      if (src != this) {
            ignore_comment_edit = true;
            comment_area.freeze ();
            comment_area.delete_text (0, -1);
            comment_area.set_point (0);
            comment_area.insert (_route.comment());
            comment_area.thaw ();
            ignore_comment_edit = false;
      }
}

void
MixerStrip::comment_edited ()
{
      ENSURE_GUI_THREAD(slot (*this, &MixerStrip::comment_edited));
      
      if (!ignore_comment_edit) {
            string str =  comment_area.get_chars(0,-1);
            _route.set_comment (str, this);
            ARDOUR_UI::instance()->tooltips().set_tip (comment_button, 
                                             str.empty() ? _("click to add/edit comments") : str);
      }
}

void
MixerStrip::set_mix_group (RouteGroup *rg)

{
      _route.set_mix_group (rg, this);
      delete group_menu;
      group_menu = 0;
}

void
MixerStrip::add_mix_group_to_menu (RouteGroup *rg)
{
      using namespace Menu_Helpers;

      MenuList& items = group_menu->items();
      items.push_back (MenuElem (rg->name(), bind (slot (*this, &MixerStrip::set_mix_group), rg)));
}

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

      group_menu = new Menu;
      group_menu->set_name ("ArdourContextMenu");
      MenuList& items = group_menu->items();

      items.push_back (MenuElem (_("no group"), bind (slot (*this, &MixerStrip::set_mix_group), (RouteGroup *) 0)));
      _session.foreach_mix_group (this, &MixerStrip::add_mix_group_to_menu);

      group_menu->popup (ev->button, 0);
      return stop_signal (group_button, "button_press_event");
}     

void
MixerStrip::mix_group_changed (void *ignored)
{
      ENSURE_GUI_THREAD(bind (slot (*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 (_("no group"));
                  break;
            case Narrow:
                  group_label.set_text (_("~G"));
                  break;
            }
      }
}

void
MixerStrip::polarity_toggled ()
{
      bool x;

      if ((x = polarity_button.get_active()) != _route.phase_invert()) {
            _route.set_phase_invert (x, this);
      }
}


void 
MixerStrip::route_gui_changed (string what_changed, void* ignored)
{
      ENSURE_GUI_THREAD(bind (slot (*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 ()
{
      Gtk::Style *style;

      name_button.ensure_style ();
      style = name_button.get_style()->copy();
      style->set_bg (GTK_STATE_NORMAL, color());
      name_button.set_style (*style);
      style->unref();

      route_active_changed ();
}

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

void
MixerStrip::build_route_ops_menu ()
{
      using namespace Menu_Helpers;

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

      MenuList& items = route_ops_menu->items();
      
      items.push_back (MenuElem (_("Rename"), slot (*this, &RouteUI::route_rename)));
      items.push_back (SeparatorElem());
      items.push_back (CheckMenuElem (_("Active"), slot (*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 (_("Remove"), slot (*this, &RouteUI::remove_this_route)));
}

gint
MixerStrip::name_button_button_release (GdkEventButton* ev)
{
      if (ev->button == 3) {
            list_route_operations ();
      }
      return FALSE;
}

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

      route_ops_menu->popup (1, 0);
}


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 ()
{
      Gtkmmext::UI::instance()->call_slot (slot (*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 (short_version (_route.name(), 5));
            break;
      }
}

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

void
MixerStrip::hide_clicked ()
{
      if (_embedded) {
             Hiding(); /* EMIT_SIGNAL */
      } else {
            _mixer.unselect_strip_in_display (this);
      }
}

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

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

      AudioTrack* at = dynamic_cast<AudioTrack*>(&_route);

      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);
                  break;
            }
      }
      _route.foreach_redirect (this, &MixerStrip::hide_redirect_editor);
}

void
MixerStrip::hide_redirect_editor (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 ("AudioTrackStripBase");
            } else {
                  set_name ("AudioTrackStripBaseInactive");
                  gpm.set_meter_strip_name ("AudioTrackStripBaseInactive");
            }
            gpm.set_fader_name ("AudioTrackFader");
      } else {
            if (_route.active()) {
                  set_name ("AudioBusStripBase");
                  gpm.set_meter_strip_name ("AudioBusStripBase");
            } else {
                  set_name ("AudioBusStripBaseInactive");
                  gpm.set_meter_strip_name ("AudioBusStripBaseInactive");
            }
            gpm.set_fader_name ("AudioBusFader");
      }
}

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