rc_option_editor.cc

Go to the documentation of this file.

/*
    Copyright (C) 2001-2011 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.

*/

#ifdef WAF_BUILD
#include "gtk2ardour-config.h"
#endif

#include <boost/algorithm/string.hpp>    

#include <gtkmm/liststore.h>
#include <gtkmm/stock.h>
#include <gtkmm/scale.h>

#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/slider_controller.h>
#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/paths_dialog.h>

#include "pbd/fpu.h"
#include "pbd/cpus.h"

#include "ardour/audioengine.h"
#include "ardour/dB.h"
#include "ardour/rc_configuration.h"
#include "ardour/control_protocol_manager.h"
#include "ardour/plugin_manager.h"
#include "control_protocol/control_protocol.h"

#include "canvas/wave_view.h"

#include "ardour_ui.h"
#include "ardour_window.h"
#include "ardour_dialog.h"
#include "gui_thread.h"
#include "midi_tracer.h"
#include "rc_option_editor.h"
#include "utils.h"
#include "midi_port_dialog.h"
#include "sfdb_ui.h"
#include "keyboard.h"
#include "theme_manager.h"
#include "ui_config.h"
#include "i18n.h"

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

class ClickOptions : public OptionEditorBox
{
public:
        ClickOptions (RCConfiguration* c, Gtk::Window* p)
                : _rc_config (c)
        {
                Table* t = manage (new Table (2, 3));
                t->set_spacings (4);

                Label* l = manage (left_aligned_label (_("Click audio file:")));
                t->attach (*l, 0, 1, 0, 1, FILL);
                t->attach (_click_path_entry, 1, 2, 0, 1, FILL);
                Button* b = manage (new Button (_("Browse...")));
                b->signal_clicked().connect (sigc::mem_fun (*this, &ClickOptions::click_browse_clicked));
                t->attach (*b, 2, 3, 0, 1, FILL);

                l = manage (left_aligned_label (_("Click emphasis audio file:")));
                t->attach (*l, 0, 1, 1, 2, FILL);
                t->attach (_click_emphasis_path_entry, 1, 2, 1, 2, FILL);
                b = manage (new Button (_("Browse...")));
                b->signal_clicked().connect (sigc::mem_fun (*this, &ClickOptions::click_emphasis_browse_clicked));
                t->attach (*b, 2, 3, 1, 2, FILL);
                
                _box->pack_start (*t, false, false);

                _click_path_entry.signal_activate().connect (sigc::mem_fun (*this, &ClickOptions::click_changed));      
                _click_emphasis_path_entry.signal_activate().connect (sigc::mem_fun (*this, &ClickOptions::click_emphasis_changed));
        }

        void parameter_changed (string const & p)
        {
                if (p == "click-sound") {
                        _click_path_entry.set_text (_rc_config->get_click_sound());
                } else if (p == "click-emphasis-sound") {
                        _click_emphasis_path_entry.set_text (_rc_config->get_click_emphasis_sound());
                }
        }

        void set_state_from_config ()
        {
                parameter_changed ("click-sound");
                parameter_changed ("click-emphasis-sound");
        }

private:

        void click_browse_clicked ()
        {
                SoundFileChooser sfdb (_("Choose Click"));

                sfdb.show_all ();
                sfdb.present ();

                if (sfdb.run () == RESPONSE_OK) {
                        click_chosen (sfdb.get_filename());
                }
        }

        void click_chosen (string const & path)
        {
                _click_path_entry.set_text (path);
                _rc_config->set_click_sound (path);
        }

        void click_changed ()
        {
                click_chosen (_click_path_entry.get_text ());
        }
        
        void click_emphasis_browse_clicked ()
        {
                SoundFileChooser sfdb (_("Choose Click Emphasis"));

                sfdb.show_all ();
                sfdb.present ();

                if (sfdb.run () == RESPONSE_OK) {
                        click_emphasis_chosen (sfdb.get_filename());
                }
        }

        void click_emphasis_chosen (string const & path)
        {
                _click_emphasis_path_entry.set_text (path);
                _rc_config->set_click_emphasis_sound (path);
        }

        void click_emphasis_changed ()
        {
                click_emphasis_chosen (_click_emphasis_path_entry.get_text ());
        }

        RCConfiguration* _rc_config;
        Entry _click_path_entry;
        Entry _click_emphasis_path_entry;
};

class UndoOptions : public OptionEditorBox
{
public:
        UndoOptions (RCConfiguration* c) :
                _rc_config (c),
                _limit_undo_button (_("Limit undo history to")),
                _save_undo_button (_("Save undo history of"))
        {
                Table* t = new Table (2, 3);
                t->set_spacings (4);

                t->attach (_limit_undo_button, 0, 1, 0, 1, FILL);
                _limit_undo_spin.set_range (0, 512);
                _limit_undo_spin.set_increments (1, 10);
                t->attach (_limit_undo_spin, 1, 2, 0, 1, FILL | EXPAND);
                Label* l = manage (left_aligned_label (_("commands")));
                t->attach (*l, 2, 3, 0, 1);

                t->attach (_save_undo_button, 0, 1, 1, 2, FILL);
                _save_undo_spin.set_range (0, 512);
                _save_undo_spin.set_increments (1, 10);
                t->attach (_save_undo_spin, 1, 2, 1, 2, FILL | EXPAND);
                l = manage (left_aligned_label (_("commands")));
                t->attach (*l, 2, 3, 1, 2);

                _box->pack_start (*t);

                _limit_undo_button.signal_toggled().connect (sigc::mem_fun (*this, &UndoOptions::limit_undo_toggled));
                _limit_undo_spin.signal_value_changed().connect (sigc::mem_fun (*this, &UndoOptions::limit_undo_changed));
                _save_undo_button.signal_toggled().connect (sigc::mem_fun (*this, &UndoOptions::save_undo_toggled));
                _save_undo_spin.signal_value_changed().connect (sigc::mem_fun (*this, &UndoOptions::save_undo_changed));
        }

        void parameter_changed (string const & p)
        {
                if (p == "history-depth") {
                        int32_t const d = _rc_config->get_history_depth();
                        _limit_undo_button.set_active (d != 0);
                        _limit_undo_spin.set_sensitive (d != 0);
                        _limit_undo_spin.set_value (d);
                } else if (p == "save-history") {
                        bool const x = _rc_config->get_save_history ();
                        _save_undo_button.set_active (x);
                        _save_undo_spin.set_sensitive (x);
                } else if (p == "save-history-depth") {
                        _save_undo_spin.set_value (_rc_config->get_saved_history_depth());
                }
        }

        void set_state_from_config ()
        {
                parameter_changed ("save-history");
                parameter_changed ("history-depth");
                parameter_changed ("save-history-depth");
        }

        void limit_undo_toggled ()
        {
                bool const x = _limit_undo_button.get_active ();
                _limit_undo_spin.set_sensitive (x);
                int32_t const n = x ? 16 : 0;
                _limit_undo_spin.set_value (n);
                _rc_config->set_history_depth (n);
        }

        void limit_undo_changed ()
        {
                _rc_config->set_history_depth (_limit_undo_spin.get_value_as_int ());
        }

        void save_undo_toggled ()
        {
                bool const x = _save_undo_button.get_active ();
                _rc_config->set_save_history (x);
        }

        void save_undo_changed ()
        {
                _rc_config->set_saved_history_depth (_save_undo_spin.get_value_as_int ());
        }

private:
        RCConfiguration* _rc_config;
        CheckButton _limit_undo_button;
        SpinButton _limit_undo_spin;
        CheckButton _save_undo_button;
        SpinButton _save_undo_spin;
};



static const struct {
    const char *name;
    guint modifier;
} modifiers[] = {

        { "Unmodified", 0 },

#ifdef GTKOSX

        /* Command = Meta
           Option/Alt = Mod1
        */
        { "Key|Shift", GDK_SHIFT_MASK },
        { "Command", GDK_META_MASK },
        { "Control", GDK_CONTROL_MASK },
        { "Option", GDK_MOD1_MASK },
        { "Command-Shift", GDK_META_MASK|GDK_SHIFT_MASK },
        { "Command-Option", GDK_MOD1_MASK|GDK_META_MASK },
        { "Shift-Option", GDK_SHIFT_MASK|GDK_MOD1_MASK },
        { "Shift-Command-Option", GDK_MOD5_MASK|GDK_SHIFT_MASK|GDK_META_MASK },

#else
        { "Key|Shift", GDK_SHIFT_MASK },
        { "Control", GDK_CONTROL_MASK },
        { "Alt (Mod1)", GDK_MOD1_MASK },
        { "Control-Shift", GDK_CONTROL_MASK|GDK_SHIFT_MASK },
        { "Control-Alt", GDK_CONTROL_MASK|GDK_MOD1_MASK },
        { "Shift-Alt", GDK_SHIFT_MASK|GDK_MOD1_MASK },
        { "Control-Shift-Alt", GDK_CONTROL_MASK|GDK_SHIFT_MASK|GDK_MOD1_MASK },
        { "Mod2", GDK_MOD2_MASK },
        { "Mod3", GDK_MOD3_MASK },
        { "Mod4", GDK_MOD4_MASK },
        { "Mod5", GDK_MOD5_MASK },
#endif
        { 0, 0 }
};


class KeyboardOptions : public OptionEditorBox
{
public:
        KeyboardOptions () :
                  _delete_button_adjustment (3, 1, 12),
                  _delete_button_spin (_delete_button_adjustment),
                  _edit_button_adjustment (3, 1, 5),
                  _edit_button_spin (_edit_button_adjustment),
                  _insert_note_button_adjustment (3, 1, 5),
                  _insert_note_button_spin (_insert_note_button_adjustment)
        {
                /* internationalize and prepare for use with combos */

                vector<string> dumb;
                for (int i = 0; modifiers[i].name; ++i) {
                        dumb.push_back (S_(modifiers[i].name));
                }

                set_popdown_strings (_edit_modifier_combo, dumb);
                _edit_modifier_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::edit_modifier_chosen));

                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == Keyboard::edit_modifier ()) {
                                _edit_modifier_combo.set_active_text (S_(modifiers[x].name));
                                break;
                        }
                }

                Table* t = manage (new Table (4, 4));
                t->set_spacings (4);

                Label* l = manage (left_aligned_label (_("Edit using:")));
                l->set_name ("OptionsLabel");

                t->attach (*l, 0, 1, 0, 1, FILL | EXPAND, FILL);
                t->attach (_edit_modifier_combo, 1, 2, 0, 1, FILL | EXPAND, FILL);

                l = manage (new Label (_("+ button")));
                l->set_name ("OptionsLabel");

                t->attach (*l, 3, 4, 0, 1, FILL | EXPAND, FILL);
                t->attach (_edit_button_spin, 4, 5, 0, 1, FILL | EXPAND, FILL);

                _edit_button_spin.set_name ("OptionsEntry");
                _edit_button_adjustment.set_value (Keyboard::edit_button());
                _edit_button_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::edit_button_changed));

                set_popdown_strings (_delete_modifier_combo, dumb);
                _delete_modifier_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::delete_modifier_chosen));

                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == Keyboard::delete_modifier ()) {
                                _delete_modifier_combo.set_active_text (S_(modifiers[x].name));
                                break;
                        }
                }

                l = manage (left_aligned_label (_("Delete using:")));
                l->set_name ("OptionsLabel");

                t->attach (*l, 0, 1, 1, 2, FILL | EXPAND, FILL);
                t->attach (_delete_modifier_combo, 1, 2, 1, 2, FILL | EXPAND, FILL);

                l = manage (new Label (_("+ button")));
                l->set_name ("OptionsLabel");

                t->attach (*l, 3, 4, 1, 2, FILL | EXPAND, FILL);
                t->attach (_delete_button_spin, 4, 5, 1, 2, FILL | EXPAND, FILL);

                _delete_button_spin.set_name ("OptionsEntry");
                _delete_button_adjustment.set_value (Keyboard::delete_button());
                _delete_button_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::delete_button_changed));


                set_popdown_strings (_insert_note_modifier_combo, dumb);
                _insert_note_modifier_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::insert_note_modifier_chosen));

                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == Keyboard::insert_note_modifier ()) {
                                _insert_note_modifier_combo.set_active_text (S_(modifiers[x].name));
                                break;
                        }
                }

                l = manage (left_aligned_label (_("Insert note using:")));
                l->set_name ("OptionsLabel");

                t->attach (*l, 0, 1, 2, 3, FILL | EXPAND, FILL);
                t->attach (_insert_note_modifier_combo, 1, 2, 2, 3, FILL | EXPAND, FILL);

                l = manage (new Label (_("+ button")));
                l->set_name ("OptionsLabel");

                t->attach (*l, 3, 4, 2, 3, FILL | EXPAND, FILL);
                t->attach (_insert_note_button_spin, 4, 5, 2, 3, FILL | EXPAND, FILL);

                _insert_note_button_spin.set_name ("OptionsEntry");
                _insert_note_button_adjustment.set_value (Keyboard::insert_note_button());
                _insert_note_button_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::insert_note_button_changed));


                set_popdown_strings (_snap_modifier_combo, dumb);
                _snap_modifier_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::snap_modifier_chosen));

                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == (guint) Keyboard::snap_modifier ()) {
                                _snap_modifier_combo.set_active_text (S_(modifiers[x].name));
                                break;
                        }
                }

                l = manage (left_aligned_label (_("Ignore snap using:")));
                l->set_name ("OptionsLabel");

                t->attach (*l, 0, 1, 3, 4, FILL | EXPAND, FILL);
                t->attach (_snap_modifier_combo, 1, 2, 3, 4, FILL | EXPAND, FILL);

                vector<string> strs;

                for (map<string,string>::iterator bf = Keyboard::binding_files.begin(); bf != Keyboard::binding_files.end(); ++bf) {
                        strs.push_back (bf->first);
                }

                set_popdown_strings (_keyboard_layout_selector, strs);
                _keyboard_layout_selector.set_active_text (Keyboard::current_binding_name());
                _keyboard_layout_selector.signal_changed().connect (sigc::mem_fun (*this, &KeyboardOptions::bindings_changed));

                l = manage (left_aligned_label (_("Keyboard layout:")));
                l->set_name ("OptionsLabel");

                t->attach (*l, 0, 1, 4, 5, FILL | EXPAND, FILL);
                t->attach (_keyboard_layout_selector, 1, 2, 4, 5, FILL | EXPAND, FILL);

                _box->pack_start (*t, false, false);
        }

        void parameter_changed (string const &)
        {
                /* XXX: these aren't really config options... */
        }

        void set_state_from_config ()
        {
                /* XXX: these aren't really config options... */
        }

private:

        void bindings_changed ()
        {
                string const txt = _keyboard_layout_selector.get_active_text();

                /* XXX: config...?  for all this keyboard stuff */

                for (map<string,string>::iterator i = Keyboard::binding_files.begin(); i != Keyboard::binding_files.end(); ++i) {
                        if (txt == i->first) {
                                if (Keyboard::load_keybindings (i->second)) {
                                        Keyboard::save_keybindings ();
                                }
                        }
                }
        }

        void edit_modifier_chosen ()
        {
                string const txt = _edit_modifier_combo.get_active_text();

                for (int i = 0; modifiers[i].name; ++i) {
                        if (txt == _(modifiers[i].name)) {
                                Keyboard::set_edit_modifier (modifiers[i].modifier);
                                break;
                        }
                }
        }

        void delete_modifier_chosen ()
        {
                string const txt = _delete_modifier_combo.get_active_text();

                for (int i = 0; modifiers[i].name; ++i) {
                        if (txt == _(modifiers[i].name)) {
                                Keyboard::set_delete_modifier (modifiers[i].modifier);
                                break;
                        }
                }
        }

        void insert_note_modifier_chosen ()
        {
                string const txt = _insert_note_modifier_combo.get_active_text();

                for (int i = 0; modifiers[i].name; ++i) {
                        if (txt == _(modifiers[i].name)) {
                                Keyboard::set_insert_note_modifier (modifiers[i].modifier);
                                break;
                        }
                }
        }

        void snap_modifier_chosen ()
        {
                string const txt = _snap_modifier_combo.get_active_text();

                for (int i = 0; modifiers[i].name; ++i) {
                        if (txt == _(modifiers[i].name)) {
                                Keyboard::set_snap_modifier (modifiers[i].modifier);
                                break;
                        }
                }
        }

        void delete_button_changed ()
        {
                Keyboard::set_delete_button (_delete_button_spin.get_value_as_int());
        }

        void edit_button_changed ()
        {
                Keyboard::set_edit_button (_edit_button_spin.get_value_as_int());
        }

        void insert_note_button_changed ()
        {
                Keyboard::set_insert_note_button (_insert_note_button_spin.get_value_as_int());
        }

        ComboBoxText _keyboard_layout_selector;
        ComboBoxText _edit_modifier_combo;
        ComboBoxText _delete_modifier_combo;
        ComboBoxText _insert_note_modifier_combo;
        ComboBoxText _snap_modifier_combo;
        Adjustment _delete_button_adjustment;
        SpinButton _delete_button_spin;
        Adjustment _edit_button_adjustment;
        SpinButton _edit_button_spin;
        Adjustment _insert_note_button_adjustment;
        SpinButton _insert_note_button_spin;

};

class FontScalingOptions : public OptionEditorBox
{
public:
        FontScalingOptions (UIConfiguration* uic) :
                _ui_config (uic),
                _dpi_adjustment (100, 50, 250, 1, 5),
                _dpi_slider (_dpi_adjustment)
        {
                _dpi_adjustment.set_value (_ui_config->get_font_scale() / 1024.);

                Label* l = manage (new Label (_("GUI and Font scaling:")));
                l->set_name ("OptionsLabel");

                 const Glib::ustring dflt = _("Default");
                 const Glib::ustring empty = X_(""); // despite gtk-doc saying so, NULL does not work as reference

                _dpi_slider.set_name("FontScaleSlider");
                _dpi_slider.set_update_policy (UPDATE_DISCONTINUOUS);
                _dpi_slider.set_draw_value(false);
                _dpi_slider.add_mark(50,  Gtk::POS_TOP, empty);
                _dpi_slider.add_mark(60,  Gtk::POS_TOP, empty);
                _dpi_slider.add_mark(70,  Gtk::POS_TOP, empty);
                _dpi_slider.add_mark(80,  Gtk::POS_TOP, empty);
                _dpi_slider.add_mark(90,  Gtk::POS_TOP, empty);
                _dpi_slider.add_mark(100, Gtk::POS_TOP, dflt);
                _dpi_slider.add_mark(125, Gtk::POS_TOP, empty);
                _dpi_slider.add_mark(150, Gtk::POS_TOP, empty);
                _dpi_slider.add_mark(175, Gtk::POS_TOP, empty);
                _dpi_slider.add_mark(200, Gtk::POS_TOP, empty);
                _dpi_slider.add_mark(225, Gtk::POS_TOP, empty);
                _dpi_slider.add_mark(250, Gtk::POS_TOP, empty);

                HBox* h = manage (new HBox);
                h->set_spacing (4);
                h->pack_start (*l, false, false);
                h->pack_start (_dpi_slider, true, true);

                _box->pack_start (*h, false, false);

                set_note (_("Adjusting the scale require an application restart to re-layout."));

                _dpi_adjustment.signal_value_changed().connect (sigc::mem_fun (*this, &FontScalingOptions::dpi_changed));
        }

        void parameter_changed (string const & p)
        {
                if (p == "font-scale") {
                        _dpi_adjustment.set_value (_ui_config->get_font_scale() / 1024.);
                }
        }

        void set_state_from_config ()
        {
                parameter_changed ("font-scale");
        }

private:

        void dpi_changed ()
        {
                _ui_config->set_font_scale ((long) floor (_dpi_adjustment.get_value() * 1024.));
                /* XXX: should be triggered from the parameter changed signal */
                reset_dpi ();
        }

        UIConfiguration* _ui_config;
        Adjustment _dpi_adjustment;
        HScale _dpi_slider;
};

class ClipLevelOptions : public OptionEditorBox
{
public:
        ClipLevelOptions (UIConfiguration* c) 
                : _ui_config (c)
                , _clip_level_adjustment (-.5, -50.0, 0.0, 0.1, 1.0) /* units of dB */
                , _clip_level_slider (_clip_level_adjustment)
        {
                _clip_level_adjustment.set_value (_ui_config->get_waveform_clip_level ());

                Label* l = manage (new Label (_("Waveform Clip Level (dBFS):")));
                l->set_name ("OptionsLabel");

                _clip_level_slider.set_update_policy (UPDATE_DISCONTINUOUS);
                HBox* h = manage (new HBox);
                h->set_spacing (4);
                h->pack_start (*l, false, false);
                h->pack_start (_clip_level_slider, true, true);

                _box->pack_start (*h, false, false);

                _clip_level_adjustment.signal_value_changed().connect (sigc::mem_fun (*this, &ClipLevelOptions::clip_level_changed));
        }

        void parameter_changed (string const & p)
        {
                if (p == "waveform-clip-level") {
                        _clip_level_adjustment.set_value (_ui_config->get_waveform_clip_level());
                }
        }

        void set_state_from_config ()
        {
                parameter_changed ("waveform-clip-level");
        }

private:

        void clip_level_changed ()
        {
                _ui_config->set_waveform_clip_level (_clip_level_adjustment.get_value());
                /* XXX: should be triggered from the parameter changed signal */
                ArdourCanvas::WaveView::set_clip_level (_clip_level_adjustment.get_value());
        }

        UIConfiguration* _ui_config;
        Adjustment _clip_level_adjustment;
        HScale _clip_level_slider;
};

class BufferingOptions : public OptionEditorBox
{
public:
        BufferingOptions (RCConfiguration* c)
                : _rc_config (c)
                , _playback_adjustment (5, 1, 60, 1, 4)
                , _capture_adjustment (5, 1, 60, 1, 4)
                , _playback_slider (_playback_adjustment)
                , _capture_slider (_capture_adjustment)
        {
                _playback_adjustment.set_value (_rc_config->get_audio_playback_buffer_seconds());

                Label* l = manage (new Label (_("Playback (seconds of buffering):")));
                l->set_name ("OptionsLabel");

                _playback_slider.set_update_policy (UPDATE_DISCONTINUOUS);
                HBox* h = manage (new HBox);
                h->set_spacing (4);
                h->pack_start (*l, false, false);
                h->pack_start (_playback_slider, true, true);

                _box->pack_start (*h, false, false);

                _capture_adjustment.set_value (_rc_config->get_audio_capture_buffer_seconds());

                l = manage (new Label (_("Recording (seconds of buffering):")));
                l->set_name ("OptionsLabel");

                _capture_slider.set_update_policy (UPDATE_DISCONTINUOUS);
                h = manage (new HBox);
                h->set_spacing (4);
                h->pack_start (*l, false, false);
                h->pack_start (_capture_slider, true, true);

                _box->pack_start (*h, false, false);

                _capture_adjustment.signal_value_changed().connect (sigc::mem_fun (*this, &BufferingOptions::capture_changed));
                _playback_adjustment.signal_value_changed().connect (sigc::mem_fun (*this, &BufferingOptions::playback_changed));
        }

        void parameter_changed (string const & p)
        {
                if (p == "playback-buffer-seconds") {
                        _playback_adjustment.set_value (_rc_config->get_audio_playback_buffer_seconds());
                } else if (p == "capture-buffer-seconds") {
                        _capture_adjustment.set_value (_rc_config->get_audio_capture_buffer_seconds());
                }
        }

        void set_state_from_config ()
        {
                parameter_changed ("playback-buffer-seconds");
                parameter_changed ("capture-buffer-seconds");
        }

private:

        void playback_changed ()
        {
                _rc_config->set_audio_playback_buffer_seconds ((long) _playback_adjustment.get_value());
        }

        void capture_changed ()
        {
                _rc_config->set_audio_capture_buffer_seconds ((long) _capture_adjustment.get_value());
        }

        RCConfiguration* _rc_config;
        Adjustment _playback_adjustment;
        Adjustment _capture_adjustment;
        HScale _playback_slider;
        HScale _capture_slider;
};

class ControlSurfacesOptions : public OptionEditorBox
{
public:
        ControlSurfacesOptions (Gtk::Window& parent)
                : _parent (parent)
                , _ignore_view_change (0)
        {
                _store = ListStore::create (_model);
                _view.set_model (_store);
                _view.append_column (_("Control Surface Protocol"), _model.name);
                _view.get_column(0)->set_resizable (true);
                _view.get_column(0)->set_expand (true);
                _view.append_column_editable (_("Enabled"), _model.enabled);
                _view.append_column_editable (_("Feedback"), _model.feedback);

                _box->pack_start (_view, false, false);

                Label* label = manage (new Label);
                label->set_markup (string_compose (X_("<i>%1</i>"), _("Double-click on a name to edit settings for an enabled protocol")));

                _box->pack_start (*label, false, false);
                label->show ();

                ControlProtocolManager& m = ControlProtocolManager::instance ();
                m.ProtocolStatusChange.connect (protocol_status_connection, MISSING_INVALIDATOR,
                                                boost::bind (&ControlSurfacesOptions::protocol_status_changed, this, _1), gui_context());

                _store->signal_row_changed().connect (sigc::mem_fun (*this, &ControlSurfacesOptions::view_changed));
                _view.signal_button_press_event().connect_notify (sigc::mem_fun(*this, &ControlSurfacesOptions::edit_clicked));
        }

        void parameter_changed (std::string const &)
        {

        }

        void set_state_from_config ()
        {
                _store->clear ();

                ControlProtocolManager& m = ControlProtocolManager::instance ();
                for (list<ControlProtocolInfo*>::iterator i = m.control_protocol_info.begin(); i != m.control_protocol_info.end(); ++i) {

                        if (!(*i)->mandatory) {
                                TreeModel::Row r = *_store->append ();
                                r[_model.name] = (*i)->name;
                                r[_model.enabled] = ((*i)->protocol || (*i)->requested);
                                r[_model.feedback] = ((*i)->protocol && (*i)->protocol->get_feedback ());
                                r[_model.protocol_info] = *i;
                        }
                }
        }

private:

        void protocol_status_changed (ControlProtocolInfo* cpi) {
                /* find the row */
                TreeModel::Children rows = _store->children();
                
                for (TreeModel::Children::iterator x = rows.begin(); x != rows.end(); ++x) {
                        string n = ((*x)[_model.name]);

                        if ((*x)[_model.protocol_info] == cpi) {
                                _ignore_view_change++;
                                (*x)[_model.enabled] = (cpi->protocol || cpi->requested);
                                _ignore_view_change--;
                                break;
                        }
                }
        }

        void view_changed (TreeModel::Path const &, TreeModel::iterator const & i)
        {
                TreeModel::Row r = *i;

                if (_ignore_view_change) {
                        return;
                }

                ControlProtocolInfo* cpi = r[_model.protocol_info];
                if (!cpi) {
                        return;
                }

                bool const was_enabled = (cpi->protocol != 0);
                bool const is_enabled = r[_model.enabled];


                if (was_enabled != is_enabled) {

                        if (!was_enabled) {
                                ControlProtocolManager::instance().activate (*cpi);
                        } else {
                                ControlProtocolManager::instance().deactivate (*cpi);
                        }
                }

                bool const was_feedback = (cpi->protocol && cpi->protocol->get_feedback ());
                bool const is_feedback = r[_model.feedback];

                if (was_feedback != is_feedback && cpi->protocol) {
                        cpi->protocol->set_feedback (is_feedback);
                }
        }

        void edit_clicked (GdkEventButton* ev)
        {
                if (ev->type != GDK_2BUTTON_PRESS) {
                        return;
                }

                std::string name;
                ControlProtocolInfo* cpi;
                TreeModel::Row row;

                row = *(_view.get_selection()->get_selected());
                if (!row[_model.enabled]) {
                        return;
                }
                cpi = row[_model.protocol_info];
                if (!cpi || !cpi->protocol || !cpi->protocol->has_editor ()) {
                        return;
                }
                Box* box = (Box*) cpi->protocol->get_gui ();
                if (!box) {
                        return;
                }
                if (box->get_parent()) {
                        static_cast<ArdourWindow*>(box->get_parent())->present();
                        return;
                }
                string title = row[_model.name];
                /* once created, the window is managed by the surface itself (as ->get_parent())
                 * Surface's tear_down_gui() is called on session close, when de-activating
                 * or re-initializing a surface.
                 * tear_down_gui() hides an deletes the Window if it exists.
                 */
                ArdourWindow* win = new ArdourWindow (_parent, title);
                win->set_title ("Control Protocol Options");
                win->add (*box);
                box->show ();
                win->present ();
        }

        class ControlSurfacesModelColumns : public TreeModelColumnRecord
        {
        public:

                ControlSurfacesModelColumns ()
                {
                        add (name);
                        add (enabled);
                        add (feedback);
                        add (protocol_info);
                }

                TreeModelColumn<string> name;
                TreeModelColumn<bool> enabled;
                TreeModelColumn<bool> feedback;
                TreeModelColumn<ControlProtocolInfo*> protocol_info;
        };

        Glib::RefPtr<ListStore> _store;
        ControlSurfacesModelColumns _model;
        TreeView _view;
        Gtk::Window& _parent;
        PBD::ScopedConnection protocol_status_connection;
        uint32_t _ignore_view_change;
};

class VideoTimelineOptions : public OptionEditorBox
{
public:
        VideoTimelineOptions (RCConfiguration* c)
                : _rc_config (c)
                , _show_video_export_info_button (_("Show Video Export Info before export"))
                , _show_video_server_dialog_button (_("Show Video Server Startup Dialog"))
                , _video_advanced_setup_button (_("Advanced Setup (remote video server)"))
        {
                Table* t = manage (new Table (2, 6));
                t->set_spacings (4);

                t->attach (_video_advanced_setup_button, 0, 2, 0, 1);
                _video_advanced_setup_button.signal_toggled().connect (sigc::mem_fun (*this, &VideoTimelineOptions::video_advanced_setup_toggled));
                Gtkmm2ext::UI::instance()->set_tip (_video_advanced_setup_button,
                                            _("<b>When enabled</b> you can speficify a custom video-server URL and docroot. - Do not enable this option unless you know what you are doing."));

                Label* l = manage (new Label (_("Video Server URL:")));
                l->set_alignment (0, 0.5);
                t->attach (*l, 0, 1, 1, 2, FILL);
                t->attach (_video_server_url_entry, 1, 2, 1, 2, FILL);
                Gtkmm2ext::UI::instance()->set_tip (_video_server_url_entry,
                                            _("Base URL of the video-server including http prefix. This is usually 'http://hostname.example.org:1554/' and defaults to 'http://localhost:1554/' when the video-server is running locally"));

                l = manage (new Label (_("Video Folder:")));
                l->set_alignment (0, 0.5);
                t->attach (*l, 0, 1, 2, 3, FILL);
                t->attach (_video_server_docroot_entry, 1, 2, 2, 3);
                Gtkmm2ext::UI::instance()->set_tip (_video_server_docroot_entry,
                                            _("Local path to the video-server document-root. Only files below this directory will be accessible by the video-server. If the server run on a remote host, it should point to a network mounted folder of the server's docroot or be left empty if it is unvailable. It is used for the local video-monitor and file-browsing when opening/adding a video file."));

                /* small vspace  y=3..4 */

                t->attach (_show_video_export_info_button, 0, 2, 4, 5);
                _show_video_export_info_button.signal_toggled().connect (sigc::mem_fun (*this, &VideoTimelineOptions::show_video_export_info_toggled));
                Gtkmm2ext::UI::instance()->set_tip (_show_video_export_info_button,
                                            _("<b>When enabled</b> an information window with details is displayed before the video-export dialog."));

                t->attach (_show_video_server_dialog_button, 0, 2, 5, 6);
                _show_video_server_dialog_button.signal_toggled().connect (sigc::mem_fun (*this, &VideoTimelineOptions::show_video_server_dialog_toggled));
                Gtkmm2ext::UI::instance()->set_tip (_show_video_server_dialog_button,
                                            _("<b>When enabled</b> the video server is never launched automatically without confirmation"));

                _video_server_url_entry.signal_changed().connect (sigc::mem_fun(*this, &VideoTimelineOptions::server_url_changed));
                _video_server_url_entry.signal_activate().connect (sigc::mem_fun(*this, &VideoTimelineOptions::server_url_changed));
                _video_server_docroot_entry.signal_changed().connect (sigc::mem_fun(*this, &VideoTimelineOptions::server_docroot_changed));
                _video_server_docroot_entry.signal_activate().connect (sigc::mem_fun(*this, &VideoTimelineOptions::server_docroot_changed));

                _box->pack_start (*t,true,true);
        }

        void server_url_changed ()
        {
                _rc_config->set_video_server_url (_video_server_url_entry.get_text());
        }

        void server_docroot_changed ()
        {
                _rc_config->set_video_server_docroot (_video_server_docroot_entry.get_text());
        }

        void show_video_export_info_toggled ()
        {
                bool const x = _show_video_export_info_button.get_active ();
                _rc_config->set_show_video_export_info (x);
        }

        void show_video_server_dialog_toggled ()
        {
                bool const x = _show_video_server_dialog_button.get_active ();
                _rc_config->set_show_video_server_dialog (x);
        }

        void video_advanced_setup_toggled ()
        {
                bool const x = _video_advanced_setup_button.get_active ();
                _rc_config->set_video_advanced_setup(x);
        }

        void parameter_changed (string const & p)
        {
                if (p == "video-server-url") {
                        _video_server_url_entry.set_text (_rc_config->get_video_server_url());
                } else if (p == "video-server-docroot") {
                        _video_server_docroot_entry.set_text (_rc_config->get_video_server_docroot());
                } else if (p == "show-video-export-info") {
                        bool const x = _rc_config->get_show_video_export_info();
                        _show_video_export_info_button.set_active (x);
                } else if (p == "show-video-server-dialog") {
                        bool const x = _rc_config->get_show_video_server_dialog();
                        _show_video_server_dialog_button.set_active (x);
                } else if (p == "video-advanced-setup") {
                        bool const x = _rc_config->get_video_advanced_setup();
                        _video_advanced_setup_button.set_active(x);
                        _video_server_docroot_entry.set_sensitive(x);
                        _video_server_url_entry.set_sensitive(x);
                }
        }

        void set_state_from_config ()
        {
                parameter_changed ("video-server-url");
                parameter_changed ("video-server-docroot");
                parameter_changed ("video-monitor-setup-dialog");
                parameter_changed ("show-video-export-info");
                parameter_changed ("show-video-server-dialog");
                parameter_changed ("video-advanced-setup");
        }

private:
        RCConfiguration* _rc_config;
        Entry _video_server_url_entry;
        Entry _video_server_docroot_entry;
        CheckButton _show_video_export_info_button;
        CheckButton _show_video_server_dialog_button;
        CheckButton _video_advanced_setup_button;
};

class PluginOptions : public OptionEditorBox
{
public:
        PluginOptions (RCConfiguration* c, UIConfiguration* uic)
                : _rc_config (c)
                , _ui_config (uic)
                , _display_plugin_scan_progress (_("Always Display Plugin Scan Progress"))
                , _discover_vst_on_start (_("Scan for [new] VST Plugins on Application Start"))
                , _discover_au_on_start (_("Scan for AudioUnit Plugins on Application Start"))
                , _timeout_adjustment (0, 0, 3000, 50, 50)
                , _timeout_slider (_timeout_adjustment)
        {
                Label *l;
                std::stringstream ss;
                Table* t = manage (new Table (2, 6));
                t->set_spacings (4);
                Button* b;
                int n = 0;

                ss << "<b>" << _("General") << "</b>";
                l = manage (left_aligned_label (ss.str()));
                l->set_use_markup (true);
                t->attach (*manage (new Label ("")), 0, 3, n, n+1, FILL | EXPAND); ++n;
                t->attach (*l, 0, 2, n, n+1, FILL | EXPAND); ++n;

                b = manage (new Button (_("Scan for Plugins")));
                b->signal_clicked().connect (sigc::mem_fun (*this, &PluginOptions::refresh_clicked));
                t->attach (*b, 0, 2, n, n+1, FILL); ++n;

                t->attach (_display_plugin_scan_progress, 0, 2, n, n+1); ++n;
                _display_plugin_scan_progress.signal_toggled().connect (sigc::mem_fun (*this, &PluginOptions::display_plugin_scan_progress_toggled));
                Gtkmm2ext::UI::instance()->set_tip (_display_plugin_scan_progress,
                                            _("<b>When enabled</b> a popup window showing plugin scan progress is displayed for indexing (cache load) and discovery (detect new plugins)"));

#if (defined WINDOWS_VST_SUPPORT || defined LXVST_SUPPORT)
                _timeout_slider.set_digits (0);
                _timeout_adjustment.signal_value_changed().connect (sigc::mem_fun (*this, &PluginOptions::timeout_changed));

                Gtkmm2ext::UI::instance()->set_tip(_timeout_slider,
                         _("Specify the default timeout for plugin instantiation in 1/10 seconds. Plugins that require more time to load will be blacklisted. A value of 0 disables the timeout."));

                l = manage (left_aligned_label (_("Scan Time Out [deciseconds]")));;
                HBox* h = manage (new HBox);
                h->set_spacing (4);
                h->pack_start (*l, false, false);
                h->pack_start (_timeout_slider, true, true);
                t->attach (*h, 0, 2, n, n+1); ++n;

                ss.str("");
                ss << "<b>" << _("VST") << "</b>";
                l = manage (left_aligned_label (ss.str()));
                l->set_use_markup (true);
                t->attach (*manage (new Label ("")), 0, 3, n, n+1, FILL | EXPAND); ++n;
                t->attach (*l, 0, 2, n, n+1, FILL | EXPAND); ++n;

                b = manage (new Button (_("Clear VST Cache")));
                b->signal_clicked().connect (sigc::mem_fun (*this, &PluginOptions::clear_vst_cache_clicked));
                t->attach (*b, 0, 1, n, n+1, FILL);

                b = manage (new Button (_("Clear VST Blacklist")));
                b->signal_clicked().connect (sigc::mem_fun (*this, &PluginOptions::clear_vst_blacklist_clicked));
                t->attach (*b, 1, 2, n, n+1, FILL);
                ++n;

                t->attach (_discover_vst_on_start, 0, 2, n, n+1); ++n;
                _discover_vst_on_start.signal_toggled().connect (sigc::mem_fun (*this, &PluginOptions::discover_vst_on_start_toggled));
                Gtkmm2ext::UI::instance()->set_tip (_discover_vst_on_start,
                                            _("<b>When enabled</b> new VST plugins are searched, tested and added to the cache index on application start. When disabled new plugins will only be available after triggering a 'Scan' manually"));

#ifdef LXVST_SUPPORT
                t->attach (*manage (left_aligned_label (_("Linux VST Path:"))), 0, 1, n, n+1);
                b = manage (new Button (_("Edit")));
                b->signal_clicked().connect (sigc::mem_fun (*this, &PluginOptions::edit_lxvst_path_clicked));
                t->attach (*b, 1, 2, n, n+1, FILL); ++n;
#endif

#ifdef WINDOWS_VST_SUPPORT
                t->attach (*manage (left_aligned_label (_("Windows VST Path:"))), 0, 1, n, n+1);
                b = manage (new Button (_("Edit")));
                b->signal_clicked().connect (sigc::mem_fun (*this, &PluginOptions::edit_vst_path_clicked));
                t->attach (*b, 1, 2, n, n+1, FILL); ++n;
#endif
#endif // any VST

#ifdef AUDIOUNIT_SUPPORT
                ss.str("");
                ss << "<b>" << _("Audio Unit") << "</b>";
                l = manage (left_aligned_label (ss.str()));
                l->set_use_markup (true);
                t->attach (*manage (new Label ("")), 0, 3, n, n+1, FILL | EXPAND); ++n;
                t->attach (*l, 0, 2, n, n+1, FILL | EXPAND); ++n;

                t->attach (_discover_au_on_start, 0, 2, n, n+1); ++n;
                _discover_au_on_start.signal_toggled().connect (sigc::mem_fun (*this, &PluginOptions::discover_au_on_start_toggled));
                Gtkmm2ext::UI::instance()->set_tip (_discover_au_on_start,
                                            _("<b>When enabled</b> Audio Unit Plugins are discovered on application start. When disabled AU plugins will only be available after triggering a 'Scan' manually. The first successful scan will enable AU auto-scan, Any crash during plugin discovery will disable it."));

                ++n;
                b = manage (new Button (_("Clear AU Cache")));
                b->signal_clicked().connect (sigc::mem_fun (*this, &PluginOptions::clear_au_cache_clicked));
                t->attach (*b, 0, 1, n, n+1, FILL);

                b = manage (new Button (_("Clear AU Blacklist")));
                b->signal_clicked().connect (sigc::mem_fun (*this, &PluginOptions::clear_au_blacklist_clicked));
                t->attach (*b, 1, 2, n, n+1, FILL);
                ++n;
#endif

                _box->pack_start (*t,true,true);
        }

        void parameter_changed (string const & p) {
                if (p == "show-plugin-scan-window") {
                        bool const x = _ui_config->get_show_plugin_scan_window();
                        _display_plugin_scan_progress.set_active (x);
                }
                else if (p == "discover-vst-on-start") {
                        bool const x = _rc_config->get_discover_vst_on_start();
                        _discover_vst_on_start.set_active (x);
                }
                else if (p == "vst-scan-timeout") {
                        int const x = _rc_config->get_vst_scan_timeout();
                        _timeout_adjustment.set_value (x);
                }
                else if (p == "discover-audio-units") {
                        bool const x = _rc_config->get_discover_audio_units();
                        _discover_au_on_start.set_active (x);
                }
        }

        void set_state_from_config () {
                parameter_changed ("show-plugin-scan-window");
                parameter_changed ("discover-vst-on-start");
                parameter_changed ("vst-scan-timeout");
                parameter_changed ("discover-audio-units");
        }

private:
        RCConfiguration* _rc_config;
        UIConfiguration* _ui_config;
        CheckButton _display_plugin_scan_progress;
        CheckButton _discover_vst_on_start;
        CheckButton _discover_au_on_start;
        Adjustment _timeout_adjustment;
        HScale _timeout_slider;

        void display_plugin_scan_progress_toggled () {
                bool const x = _display_plugin_scan_progress.get_active();
                _ui_config->set_show_plugin_scan_window(x);
        }

        void discover_vst_on_start_toggled () {
                bool const x = _discover_vst_on_start.get_active();
                _rc_config->set_discover_vst_on_start(x);
        }

        void discover_au_on_start_toggled () {
                bool const x = _discover_au_on_start.get_active();
                _rc_config->set_discover_audio_units(x);
        }

        void timeout_changed () {
                int x = floor(_timeout_adjustment.get_value());
                _rc_config->set_vst_scan_timeout(x);
        }

        void clear_vst_cache_clicked () {
                PluginManager::instance().clear_vst_cache();
        }

        void clear_vst_blacklist_clicked () {
                PluginManager::instance().clear_vst_blacklist();
        }

        void clear_au_cache_clicked () {
                PluginManager::instance().clear_au_cache();
        }

        void clear_au_blacklist_clicked () {
                PluginManager::instance().clear_au_blacklist();
        }


        void edit_vst_path_clicked () {
                Gtkmm2ext::PathsDialog *pd = new Gtkmm2ext::PathsDialog (
                                _("Set Windows VST Search Path"),
                                _rc_config->get_plugin_path_vst(),
                                PluginManager::instance().get_default_windows_vst_path()
                        );
                ResponseType r = (ResponseType) pd->run ();
                pd->hide();
                if (r == RESPONSE_ACCEPT) {
                        _rc_config->set_plugin_path_vst(pd->get_serialized_paths());
                }
                delete pd;
        }

        // todo consolidate with edit_vst_path_clicked..
        void edit_lxvst_path_clicked () {
                Gtkmm2ext::PathsDialog *pd = new Gtkmm2ext::PathsDialog (
                                _("Set Linux VST Search Path"),
                                _rc_config->get_plugin_path_lxvst(),
                                PluginManager::instance().get_default_lxvst_path()
                                );
                ResponseType r = (ResponseType) pd->run ();
                pd->hide();
                if (r == RESPONSE_ACCEPT) {
                        _rc_config->set_plugin_path_lxvst(pd->get_serialized_paths());
                }
                delete pd;
        }

        void refresh_clicked () {
                PluginManager::instance().refresh();
        }
};


class VisibilityOption : public Option
{
public:
        VisibilityOption (string name, VisibilityGroup* g, sigc::slot<string> get, sigc::slot<bool, string> set)
                : Option (g->get_state_name(), name)
                , _heading (name)
                , _visibility_group (g)
                , _get (get)
                , _set (set)
        {
                /* Watch for changes made by the user to our members */
                _visibility_group->VisibilityChanged.connect_same_thread (
                        _visibility_group_connection, sigc::bind (&VisibilityOption::changed, this)
                        );
        }

        void set_state_from_config ()
        {
                /* Set our state from the current configuration */
                _visibility_group->set_state (_get ());
        }

        void add_to_page (OptionEditorPage* p)
        {
                _heading.add_to_page (p);
                add_widget_to_page (p, _visibility_group->list_view ());
        }

        Gtk::Widget& tip_widget() { return *_visibility_group->list_view (); }

private:
        void changed ()
        {
                /* The user has changed something, so reflect this change
                   in the RCConfiguration.
                */
                _set (_visibility_group->get_state_value ());
        }
        
        OptionEditorHeading _heading;
        VisibilityGroup* _visibility_group;
        sigc::slot<std::string> _get;
        sigc::slot<bool, std::string> _set;
        PBD::ScopedConnection _visibility_group_connection;
};



RCOptionEditor::RCOptionEditor ()
        : OptionEditor (Config, string_compose (_("%1 Preferences"), PROGRAM_NAME))
        , _rc_config (Config)
        , _ui_config (ARDOUR_UI::config())
        , _mixer_strip_visibility ("mixer-element-visibility")
{
        /* MISC */

        uint32_t hwcpus = hardware_concurrency ();
        BoolOption* bo;
        BoolComboOption* bco;

        if (hwcpus > 1) {
                add_option (_("Misc"), new OptionEditorHeading (_("DSP CPU Utilization")));

                ComboOption<int32_t>* procs = new ComboOption<int32_t> (
                        "processor-usage",
                        _("Signal processing uses"),
                        sigc::mem_fun (*_rc_config, &RCConfiguration::get_processor_usage),
                        sigc::mem_fun (*_rc_config, &RCConfiguration::set_processor_usage)
                        );

                procs->add (-1, _("all but one processor"));
                procs->add (0, _("all available processors"));

                for (uint32_t i = 1; i <= hwcpus; ++i) {
                        procs->add (i, string_compose (_("%1 processors"), i));
                }

                procs->set_note (string_compose (_("This setting will only take effect when %1 is restarted."), PROGRAM_NAME));

                add_option (_("Misc"), procs);
        }

        add_option (_("Misc"), new OptionEditorHeading (S_("Options|Undo")));

        add_option (_("Misc"), new UndoOptions (_rc_config));

        add_option (_("Misc"),
             new BoolOption (
                     "verify-remove-last-capture",
                     _("Verify removal of last capture"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_verify_remove_last_capture),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_verify_remove_last_capture)
                     ));

        add_option (_("Misc"),
             new BoolOption (
                     "periodic-safety-backups",
                     _("Make periodic backups of the session file"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_periodic_safety_backups),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_periodic_safety_backups)
                     ));

        add_option (_("Misc"), new OptionEditorHeading (_("Session Management")));

        add_option (_("Misc"),
             new BoolOption (
                     "only-copy-imported-files",
                     _("Always copy imported files"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_only_copy_imported_files),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_only_copy_imported_files)
                     ));

        add_option (_("Misc"), new DirectoryOption (
                            X_("default-session-parent-dir"),
                            _("Default folder for new sessions:"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_default_session_parent_dir),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_default_session_parent_dir)
                            ));

        add_option (_("Misc"),
             new SpinOption<uint32_t> (
                     "max-recent-sessions",
                     _("Maximum number of recent sessions"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_max_recent_sessions),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_max_recent_sessions),
                     0, 1000, 1, 20
                     ));

        add_option (_("Misc"), new OptionEditorHeading (_("Click")));

        add_option (_("Misc"), new ClickOptions (_rc_config, this));

        add_option (_("Misc"),
             new FaderOption (
                     "click-gain",
                     _("Click gain level"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_click_gain),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_click_gain)
                     ));

        add_option (_("Misc"), new OptionEditorHeading (_("Automation")));

        add_option (_("Misc"),
             new SpinOption<double> (
                     "automation-thinning-factor",
                     _("Thinning factor (larger value => less data)"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_automation_thinning_factor),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_automation_thinning_factor),
                     0, 1000, 1, 20
                     ));

        add_option (_("Misc"),
             new SpinOption<double> (
                     "automation-interval-msecs",
                     _("Automation sampling interval (milliseconds)"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_automation_interval_msecs),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_automation_interval_msecs),
                     1, 1000, 1, 20
                     ));

        /* TRANSPORT */

        BoolOption* tsf;

        tsf = new BoolOption (
                     "latched-record-enable",
                     _("Keep record-enable engaged on stop"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_latched_record_enable),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_latched_record_enable)
                     );
        // Gtkmm2ext::UI::instance()->set_tip (tsf->tip_widget(), _(""));
        add_option (_("Transport"), tsf);

        tsf = new BoolOption (
                     "loop-is-mode",
                     _("Play loop is a transport mode"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_loop_is_mode),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_loop_is_mode)
                     );
        Gtkmm2ext::UI::instance()->set_tip (tsf->tip_widget(), 
                                            (_("<b>When enabled</b> the loop button does not start playback but forces playback to always play the loop\n\n"
                                               "<b>When disabled</b> the loop button starts playing the loop, but stop then cancels loop playback")));
        add_option (_("Transport"), tsf);
        
        tsf = new BoolOption (
                     "stop-recording-on-xrun",
                     _("Stop recording when an xrun occurs"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_stop_recording_on_xrun),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_stop_recording_on_xrun)
                     );
        Gtkmm2ext::UI::instance()->set_tip (tsf->tip_widget(), 
                                            string_compose (_("<b>When enabled</b> %1 will stop recording if an over- or underrun is detected by the audio engine"),
                                                            PROGRAM_NAME));
        add_option (_("Transport"), tsf);

        tsf = new BoolOption (
                     "create-xrun-marker",
                     _("Create markers where xruns occur"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_create_xrun_marker),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_create_xrun_marker)
                     );
        // Gtkmm2ext::UI::instance()->set_tip (tsf->tip_widget(), _(""));
        add_option (_("Transport"), tsf);

        tsf = new BoolOption (
                     "stop-at-session-end",
                     _("Stop at the end of the session"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_stop_at_session_end),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_stop_at_session_end)
                     );
        Gtkmm2ext::UI::instance()->set_tip (tsf->tip_widget(), 
                                            string_compose (_("<b>When enabled</b> if %1 is <b>not recording</b>, it will stop the transport "
                                                              "when it reaches the current session end marker\n\n"
                                                              "<b>When disabled</b> %1 will continue to roll past the session end marker at all times"),
                                                            PROGRAM_NAME));
        add_option (_("Transport"), tsf);

        tsf = new BoolOption (
                     "seamless-loop",
                     _("Do seamless looping (not possible when slaved to MTC, LTC etc)"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_seamless_loop),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_seamless_loop)
                     );
        Gtkmm2ext::UI::instance()->set_tip (tsf->tip_widget(), 
                                            string_compose (_("<b>When enabled</b> this will loop by reading ahead and wrapping around at the loop point, "
                                                              "preventing any need to do a transport locate at the end of the loop\n\n"
                                                              "<b>When disabled</b> looping is done by locating back to the start of the loop when %1 reaches the end "
                                                              "which will often cause a small click or delay"), PROGRAM_NAME));
        add_option (_("Transport"), tsf);

        tsf = new BoolOption (
                     "disable-disarm-during-roll",
                     _("Disable per-track record disarm while rolling"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_disable_disarm_during_roll),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_disable_disarm_during_roll)
                     );
        Gtkmm2ext::UI::instance()->set_tip (tsf->tip_widget(), _("<b>When enabled</b> this will prevent you from accidentally stopping specific tracks recording during a take"));
        add_option (_("Transport"), tsf);

        tsf = new BoolOption (
                     "quieten_at_speed",
                     _("12dB gain reduction during fast-forward and fast-rewind"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_quieten_at_speed),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_quieten_at_speed)
                     );
        Gtkmm2ext::UI::instance()->set_tip (tsf->tip_widget(), _("This will reduce the unpleasant increase in perceived volume "
                                                   "that occurs when fast-forwarding or rewinding through some kinds of audio"));
        add_option (_("Transport"), tsf);

        add_option (_("Transport"), new OptionEditorHeading (S_("Sync/Slave")));

        _sync_source = new ComboOption<SyncSource> (
                "sync-source",
                _("External timecode source"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_sync_source),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_sync_source)
                );

        add_option (_("Transport"), _sync_source);

        _sync_framerate = new BoolOption (
                     "timecode-sync-frame-rate",
                     _("Match session video frame rate to external timecode"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_timecode_sync_frame_rate),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_timecode_sync_frame_rate)
                     );
        Gtkmm2ext::UI::instance()->set_tip 
                (_sync_framerate->tip_widget(),
                 string_compose (_("This option controls the value of the video frame rate <i>while chasing</i> an external timecode source.\n\n"
                                   "<b>When enabled</b> the session video frame rate will be changed to match that of the selected external timecode source.\n\n"
                                   "<b>When disabled</b> the session video frame rate will not be changed to match that of the selected external timecode source."
                                   "Instead the frame rate indication in the main clock will flash red and %1 will convert between the external "
                                   "timecode standard and the session standard."), PROGRAM_NAME));

        add_option (_("Transport"), _sync_framerate);

        _sync_genlock = new BoolOption (
                "timecode-source-is-synced",
                _("Sync-lock timecode to clock (disable drift compensation)"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_timecode_source_is_synced),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_timecode_source_is_synced)
                );
        Gtkmm2ext::UI::instance()->set_tip 
                (_sync_genlock->tip_widget(),
                 string_compose (_("<b>When enabled</b> %1 will never varispeed when slaved to external timecode. "
                                   "Sync Lock indicates that the selected external timecode source shares clock-sync "
                                   "(Black &amp; Burst, Wordclock, etc) with the audio interface. "
                                   "This option disables drift compensation. The transport speed is fixed at 1.0. "
                                   "Vari-speed LTC will be ignored and cause drift."
                                   "\n\n"
                                   "<b>When disabled</b> %1 will compensate for potential drift, regardless if the "
                                   "timecode sources shares clock sync."
                                  ), PROGRAM_NAME));


        add_option (_("Transport"), _sync_genlock);

        _sync_source_2997 = new BoolOption (
                "timecode-source-2997",
                _("Lock to 29.9700 fps instead of 30000/1001"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_timecode_source_2997),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_timecode_source_2997)
                );
        Gtkmm2ext::UI::instance()->set_tip
                (_sync_source_2997->tip_widget(),
                 _("<b>When enabled</b> the external timecode source is assumed to use 29.97 fps instead of 30000/1001.\n"
                         "SMPTE 12M-1999 specifies 29.97df as 30000/1001. The spec further mentions that "
                         "drop-frame timecode has an accumulated error of -86ms over a 24-hour period.\n"
                         "Drop-frame timecode would compensate exactly for a NTSC color frame rate of 30 * 0.9990 (ie 29.970000). "
                         "That is not the actual rate. However, some vendors use that rate - despite it being against the specs - "
                         "because the variant of using exactly 29.97 fps has zero timecode drift.\n"
                         ));

        add_option (_("Transport"), _sync_source_2997);

        add_option (_("Transport"), new OptionEditorHeading (S_("LTC Reader")));

        _ltc_port = new ComboStringOption (
                "ltc-source-port",
                _("LTC incoming port"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_ltc_source_port),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_ltc_source_port)
                );

        vector<string> physical_inputs;
        physical_inputs.push_back (_("None"));
        AudioEngine::instance()->get_physical_inputs (DataType::AUDIO, physical_inputs);
        _ltc_port->set_popdown_strings (physical_inputs);

        populate_sync_options ();

        add_option (_("Transport"), _ltc_port);

        // TODO; rather disable this button than not compile it..
        add_option (_("Transport"), new OptionEditorHeading (S_("LTC Generator")));

        add_option (_("Transport"),
                    new BoolOption (
                            "send-ltc",
                            _("Enable LTC generator"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_send_ltc),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_send_ltc)
                            ));

        _ltc_send_continuously = new BoolOption (
                            "ltc-send-continuously",
                            _("Send LTC while stopped"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_ltc_send_continuously),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_ltc_send_continuously)
                            );
        Gtkmm2ext::UI::instance()->set_tip
                (_ltc_send_continuously->tip_widget(),
                 string_compose (_("<b>When enabled</b> %1 will continue to send LTC information even when the transport (playhead) is not moving"), PROGRAM_NAME));
        add_option (_("Transport"), _ltc_send_continuously);

        _ltc_volume_adjustment = new Gtk::Adjustment(-18, -50, 0, .5, 5);
        _ltc_volume_adjustment->set_value (20 * log10(_rc_config->get_ltc_output_volume()));
        _ltc_volume_adjustment->signal_value_changed().connect (sigc::mem_fun (*this, &RCOptionEditor::ltc_generator_volume_changed));
        _ltc_volume_slider = new HSliderOption("ltcvol", _("LTC generator level"), *_ltc_volume_adjustment);

        Gtkmm2ext::UI::instance()->set_tip
                (_ltc_volume_slider->tip_widget(),
                 _("Specify the Peak Volume of the generated LTC signal in dbFS. A good value is  0dBu ^= -18dbFS in an EBU calibrated system"));

        add_option (_("Transport"), _ltc_volume_slider);
        parameter_changed ("send-ltc");

        parameter_changed ("sync-source");

        /* EDITOR */

        add_option (S_("Editor"),
             new BoolOption (
                     "draggable-playhead",
                     _("Allow dragging of playhead"),
                     sigc::mem_fun (*ARDOUR_UI::config(), &UIConfiguration::get_draggable_playhead),
                     sigc::mem_fun (*ARDOUR_UI::config(), &UIConfiguration::set_draggable_playhead)
                     ));

        add_option (_("Editor"),
             new BoolOption (
                     "automation-follows-regions",
                     _("Move relevant automation when audio regions are moved"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_automation_follows_regions),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_automation_follows_regions)
                     ));

        add_option (_("Editor"),
             new BoolOption (
                     "show-track-meters",
                     _("Show meters on tracks in the editor"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_show_track_meters),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_show_track_meters)
                     ));

        add_option (_("Editor"),
             new BoolOption (
                     "show-editor-meter",
                     _("Display master-meter in the toolbar"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_show_editor_meter),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_show_editor_meter)
                     ));

        ComboOption<FadeShape>* fadeshape = new ComboOption<FadeShape> (
                        "default-fade-shape",
                        _("Default fade shape"),
                        sigc::mem_fun (*_rc_config,
                                &RCConfiguration::get_default_fade_shape),
                        sigc::mem_fun (*_rc_config,
                                &RCConfiguration::set_default_fade_shape)
                        );

        fadeshape->add (FadeLinear,
                        _("Linear (for highly correlated material)"));
        fadeshape->add (FadeConstantPower, _("Constant power"));
        fadeshape->add (FadeSymmetric, _("Symmetric"));
        fadeshape->add (FadeSlow, _("Slow"));
        fadeshape->add (FadeFast, _("Fast"));

        add_option (_("Editor"), fadeshape);


        bco = new BoolComboOption (
                     "use-overlap-equivalency",
                     _("Regions in active edit groups are edited together"),
                     _("whenever they overlap in time"),
                     _("only if they have identical length, position and origin"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_use_overlap_equivalency),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_use_overlap_equivalency)
                     );

        add_option (_("Editor"), bco);

        ComboOption<LayerModel>* lm = new ComboOption<LayerModel> (
                "layer-model",
                _("Layering model"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_layer_model),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_layer_model)
                );

        lm->add (LaterHigher, _("later is higher"));
        lm->add (Manual, _("manual layering"));
        add_option (_("Editor"), lm);

        add_option (_("Editor"),
             new BoolOption (
                     "rubberbanding-snaps-to-grid",
                     _("Make rubberband selection rectangle snap to the grid"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_rubberbanding_snaps_to_grid),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_rubberbanding_snaps_to_grid)
                     ));

        add_option (_("Editor"),
             new BoolOption (
                     "show-waveforms",
                     _("Show waveforms in regions"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_show_waveforms),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_show_waveforms)
                     ));

        add_option (_("Editor"),
             new BoolComboOption (
                     "show-region-gain-envelopes",
                     _("Show gain envelopes in audio regions"),
                     _("in all modes"),
                     _("only in region gain mode"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_show_region_gain),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_show_region_gain)
                     ));

        ComboOption<WaveformScale>* wfs = new ComboOption<WaveformScale> (
                "waveform-scale",
                _("Waveform scale"),
                sigc::mem_fun (*_ui_config, &UIConfiguration::get_waveform_scale),
                sigc::mem_fun (*_ui_config, &UIConfiguration::set_waveform_scale)
                );

        wfs->add (Linear, _("linear"));
        wfs->add (Logarithmic, _("logarithmic"));

        add_option (_("Editor"), wfs);

        ComboOption<WaveformShape>* wfsh = new ComboOption<WaveformShape> (
                "waveform-shape",
                _("Waveform shape"),
                sigc::mem_fun (*_ui_config, &UIConfiguration::get_waveform_shape),
                sigc::mem_fun (*_ui_config, &UIConfiguration::set_waveform_shape)
                );

        wfsh->add (Traditional, _("traditional"));
        wfsh->add (Rectified, _("rectified"));

        add_option (_("Editor"), wfsh);

        add_option (_("Editor"), new ClipLevelOptions (_ui_config));

        add_option (_("Editor"),
             new BoolOption (
                     "show-waveforms-while-recording",
                     _("Show waveforms for audio while it is being recorded"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_show_waveforms_while_recording),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_show_waveforms_while_recording)
                     ));

        add_option (_("Editor"),
                    new BoolOption (
                            "show-zoom-tools",
                            _("Show zoom toolbar"),
                            sigc::mem_fun (*_ui_config, &UIConfiguration::get_show_zoom_tools),
                            sigc::mem_fun (*_ui_config, &UIConfiguration::set_show_zoom_tools)
                            ));

        add_option (_("Editor"),
                    new BoolOption (
                            "update-editor-during-summary-drag",
                            _("Update editor window during drags of the summary"),
                            sigc::mem_fun (*_ui_config, &UIConfiguration::get_update_editor_during_summary_drag),
                            sigc::mem_fun (*_ui_config, &UIConfiguration::set_update_editor_during_summary_drag)
                            ));

        bo = new BoolOption (
                     "name-new-markers",
                     _("Name new markers"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_name_new_markers),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_name_new_markers)
                );
        
        add_option (_("Editor"), bo);
        Gtkmm2ext::UI::instance()->set_tip (bo->tip_widget(), _("If enabled, popup a dialog when a new marker is created to allow its name to be set as it is created."
                                                                "\n\nYou can always rename markers by right-clicking on them"));

        add_option (_("Editor"),
            new BoolOption (
                    "autoscroll-editor",
                    _("Auto-scroll editor window when dragging near its edges"),
                    sigc::mem_fun (*_ui_config, &UIConfiguration::get_autoscroll_editor),
                    sigc::mem_fun (*_ui_config, &UIConfiguration::set_autoscroll_editor)
                    ));

        ComboOption<RegionSelectionAfterSplit> *rsas = new ComboOption<RegionSelectionAfterSplit> (
                    "region-selection-after-split",
                    _("After splitting selected regions, select"),
                    sigc::mem_fun (*_rc_config, &RCConfiguration::get_region_selection_after_split),
                    sigc::mem_fun (*_rc_config, &RCConfiguration::set_region_selection_after_split));

        // TODO: decide which of these modes are really useful
        rsas->add(None, _("no regions"));
        // rsas->add(NewlyCreatedLeft, _("newly-created regions before the split"));
        // rsas->add(NewlyCreatedRight, _("newly-created regions after the split"));
        rsas->add(NewlyCreatedBoth, _("newly-created regions"));
        // rsas->add(Existing, _("unmodified regions in the existing selection"));
        // rsas->add(ExistingNewlyCreatedLeft, _("existing selection and newly-created regions before the split"));
        // rsas->add(ExistingNewlyCreatedRight, _("existing selection and newly-created regions after the split"));
        rsas->add(ExistingNewlyCreatedBoth, _("existing selection and newly-created regions"));

        add_option (_("Editor"), rsas);


        /* AUDIO */

        add_option (_("Audio"), new OptionEditorHeading (_("Buffering")));

        add_option (_("Audio"), new BufferingOptions (_rc_config));

        add_option (_("Audio"), new OptionEditorHeading (_("Monitoring")));

        ComboOption<MonitorModel>* mm = new ComboOption<MonitorModel> (
                "monitoring-model",
                _("Record monitoring handled by"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_monitoring_model),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_monitoring_model)
                );

        if (AudioEngine::instance()->port_engine().can_monitor_input()) {
                mm->add (HardwareMonitoring, _("via Audio Driver"));
        }

        string prog (PROGRAM_NAME);
        boost::algorithm::to_lower (prog);
        mm->add (SoftwareMonitoring, string_compose (_("%1"), prog));
        mm->add (ExternalMonitoring, _("audio hardware"));

        add_option (_("Audio"), mm);

        add_option (_("Audio"),
             new BoolOption (
                     "tape-machine-mode",
                     _("Tape machine mode"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_tape_machine_mode),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_tape_machine_mode)
                     ));

        add_option (_("Audio"), new OptionEditorHeading (_("Connection of tracks and busses")));

        add_option (_("Audio"),
                    new BoolOption (
                            "auto-connect-standard-busses",
                            _("Auto-connect master/monitor busses"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_auto_connect_standard_busses),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_auto_connect_standard_busses)
                            ));

        ComboOption<AutoConnectOption>* iac = new ComboOption<AutoConnectOption> (
                "input-auto-connect",
                _("Connect track inputs"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_input_auto_connect),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_input_auto_connect)
                );

        iac->add (AutoConnectPhysical, _("automatically to physical inputs"));
        iac->add (ManualConnect, _("manually"));

        add_option (_("Audio"), iac);

        ComboOption<AutoConnectOption>* oac = new ComboOption<AutoConnectOption> (
                "output-auto-connect",
                _("Connect track and bus outputs"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_output_auto_connect),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_output_auto_connect)
                );

        oac->add (AutoConnectPhysical, _("automatically to physical outputs"));
        oac->add (AutoConnectMaster, _("automatically to master bus"));
        oac->add (ManualConnect, _("manually"));

        add_option (_("Audio"), oac);

        add_option (_("Audio"), new OptionEditorHeading (_("Denormals")));

        add_option (_("Audio"),
             new BoolOption (
                     "denormal-protection",
                     _("Use DC bias to protect against denormals"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_denormal_protection),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_denormal_protection)
                     ));

        ComboOption<DenormalModel>* dm = new ComboOption<DenormalModel> (
                "denormal-model",
                _("Processor handling"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_denormal_model),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_denormal_model)
                );

        int dmsize = 1;
        dm->add (DenormalNone, _("no processor handling"));

        FPU fpu;

        if (fpu.has_flush_to_zero()) {
                ++dmsize;
                dm->add (DenormalFTZ, _("use FlushToZero"));
        } else if (_rc_config->get_denormal_model() == DenormalFTZ) {
                _rc_config->set_denormal_model(DenormalNone);
        }

        if (fpu.has_denormals_are_zero()) {
                ++dmsize;
                dm->add (DenormalDAZ, _("use DenormalsAreZero"));
        } else if (_rc_config->get_denormal_model() == DenormalDAZ) {
                _rc_config->set_denormal_model(DenormalNone);
        }

        if (fpu.has_flush_to_zero() && fpu.has_denormals_are_zero()) {
                ++dmsize;
                dm->add (DenormalFTZDAZ, _("use FlushToZero and DenormalsAreZero"));
        } else if (_rc_config->get_denormal_model() == DenormalFTZDAZ) {
                _rc_config->set_denormal_model(DenormalNone);
        }

        if (dmsize == 1) {
                dm->set_sensitive(false);
        }

        add_option (_("Audio"), dm);

        add_option (_("Audio"), new OptionEditorHeading (_("Plugins")));

        add_option (_("Audio"),
             new BoolOption (
                     "plugins-stop-with-transport",
                     _("Silence plugins when the transport is stopped"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_plugins_stop_with_transport),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_plugins_stop_with_transport)
                     ));

        add_option (_("Audio"),
             new BoolOption (
                     "new-plugins-active",
                     _("Make new plugins active"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_new_plugins_active),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_new_plugins_active)
                     ));

        add_option (_("Audio"), new OptionEditorHeading (_("Regions")));

        add_option (_("Audio"),
             new BoolOption (
                     "auto-analyse-audio",
                     _("Enable automatic analysis of audio"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_auto_analyse_audio),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_auto_analyse_audio)
                     ));

        add_option (_("Audio"),
             new BoolOption (
                     "replicate-missing-region-channels",
                     _("Replicate missing region channels"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_replicate_missing_region_channels),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_replicate_missing_region_channels)
                     ));

        /* SOLO AND MUTE */

        add_option (_("Solo / mute"), new OptionEditorHeading (_("Solo")));

        add_option (_("Solo / mute"),
             new FaderOption (
                     "solo-mute-gain",
                     _("Solo-in-place mute cut (dB)"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_solo_mute_gain),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_solo_mute_gain)
                     ));

        _solo_control_is_listen_control = new BoolOption (
                "solo-control-is-listen-control",
                _("Solo controls are Listen controls"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_solo_control_is_listen_control),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_solo_control_is_listen_control)
                );

        add_option (_("Solo / mute"), _solo_control_is_listen_control);

        _listen_position = new ComboOption<ListenPosition> (
                "listen-position",
                _("Listen Position"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_listen_position),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_listen_position)
                );

        _listen_position->add (AfterFaderListen, _("after-fader (AFL)"));
        _listen_position->add (PreFaderListen, _("pre-fader (PFL)"));

        add_option (_("Solo / mute"), _listen_position);

        ComboOption<PFLPosition>* pp = new ComboOption<PFLPosition> (
                "pfl-position",
                _("PFL signals come from"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_pfl_position),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_pfl_position)
                );

        pp->add (PFLFromBeforeProcessors, _("before pre-fader processors"));
        pp->add (PFLFromAfterProcessors, _("pre-fader but after pre-fader processors"));

        add_option (_("Solo / mute"), pp);

        ComboOption<AFLPosition>* pa = new ComboOption<AFLPosition> (
                "afl-position",
                _("AFL signals come from"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_afl_position),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_afl_position)
                );

        pa->add (AFLFromBeforeProcessors, _("immediately post-fader"));
        pa->add (AFLFromAfterProcessors, _("after post-fader processors (before pan)"));

        add_option (_("Solo / mute"), pa);

        parameter_changed ("use-monitor-bus");

        add_option (_("Solo / mute"),
             new BoolOption (
                     "exclusive-solo",
                     _("Exclusive solo"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_exclusive_solo),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_exclusive_solo)
                     ));

        add_option (_("Solo / mute"),
             new BoolOption (
                     "show-solo-mutes",
                     _("Show solo muting"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_show_solo_mutes),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_show_solo_mutes)
                     ));

        add_option (_("Solo / mute"),
             new BoolOption (
                     "solo-mute-override",
                     _("Soloing overrides muting"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_solo_mute_override),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_solo_mute_override)
                     ));

        add_option (_("Solo / mute"), new OptionEditorHeading (_("Default track / bus muting options")));

        add_option (_("Solo / mute"),
             new BoolOption (
                     "mute-affects-pre-fader",
                     _("Mute affects pre-fader sends"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_mute_affects_pre_fader),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_mute_affects_pre_fader)
                     ));

        add_option (_("Solo / mute"),
             new BoolOption (
                     "mute-affects-post-fader",
                     _("Mute affects post-fader sends"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_mute_affects_post_fader),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_mute_affects_post_fader)
                     ));

        add_option (_("Solo / mute"),
             new BoolOption (
                     "mute-affects-control-outs",
                     _("Mute affects control outputs"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_mute_affects_control_outs),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_mute_affects_control_outs)
                     ));

        add_option (_("Solo / mute"),
             new BoolOption (
                     "mute-affects-main-outs",
                     _("Mute affects main outputs"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_mute_affects_main_outs),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_mute_affects_main_outs)
                     ));

        add_option (_("Solo / mute"), new OptionEditorHeading (_("Send Routing")));

        add_option (_("Solo / mute"),
             new BoolOption (
                     "link-send-and-route-panner",
                     _("Link panners of Aux and External Sends with main panner by default"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_link_send_and_route_panner),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_link_send_and_route_panner)
                     ));

        add_option (_("MIDI"),
                    new SpinOption<float> (
                            "midi-readahead",
                            _("MIDI read-ahead time (seconds)"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_midi_readahead),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_midi_readahead),
                            0.1, 10, 0.1, 1,
                            "", 1.0, 1
                            ));

        add_option (_("MIDI"),
                    new BoolOption (
                            "send-midi-clock",
                            _("Send MIDI Clock"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_send_midi_clock),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_send_midi_clock)
                            ));

        add_option (_("MIDI"),
                    new BoolOption (
                            "send-mtc",
                            _("Send MIDI Time Code"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_send_mtc),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_send_mtc)
                            ));

        add_option (_("MIDI"),
                    new SpinOption<int> (
                            "mtc-qf-speed-tolerance",
                            _("Percentage either side of normal transport speed to transmit MTC"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_mtc_qf_speed_tolerance),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_mtc_qf_speed_tolerance),
                            0, 20, 1, 5
                            ));

        add_option (_("MIDI"),
                    new BoolOption (
                            "mmc-control",
                            _("Obey MIDI Machine Control commands"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_mmc_control),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_mmc_control)
                            ));

        add_option (_("MIDI"),
                    new BoolOption (
                            "send-mmc",
                            _("Send MIDI Machine Control commands"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_send_mmc),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_send_mmc)
                            ));

        add_option (_("MIDI"),
                    new BoolOption (
                            "midi-feedback",
                            _("Send MIDI control feedback"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_midi_feedback),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_midi_feedback)
                            ));

        add_option (_("MIDI"),
             new SpinOption<uint8_t> (
                     "mmc-receive-device-id",
                     _("Inbound MMC device ID"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_mmc_receive_device_id),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_mmc_receive_device_id),
                     0, 128, 1, 10
                     ));

        add_option (_("MIDI"),
             new SpinOption<uint8_t> (
                     "mmc-send-device-id",
                     _("Outbound MMC device ID"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_mmc_send_device_id),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_mmc_send_device_id),
                     0, 128, 1, 10
                     ));

        add_option (_("MIDI"),
             new SpinOption<int32_t> (
                     "initial-program-change",
                     _("Initial program change"),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::get_initial_program_change),
                     sigc::mem_fun (*_rc_config, &RCConfiguration::set_initial_program_change),
                     -1, 65536, 1, 10
                     ));

        add_option (_("MIDI"),
                    new BoolOption (
                            "display-first-midi-bank-as-zero",
                            _("Display first MIDI bank/program as 0"),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::get_first_midi_bank_is_zero),
                            sigc::mem_fun (*_rc_config, &RCConfiguration::set_first_midi_bank_is_zero)
                            ));

        add_option (_("MIDI"),
             new BoolOption (
                     "never-display-periodic-midi",
                     _("Never display periodic MIDI messages (MTC, MIDI Clock)"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_never_display_periodic_midi),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_never_display_periodic_midi)
                     ));

        add_option (_("MIDI"),
             new BoolOption (
                     "sound-midi-notes",
                     _("Sound MIDI notes as they are selected"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_sound_midi_notes),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_sound_midi_notes)
                     ));

        add_option (_("MIDI"), new OptionEditorHeading (_("Midi Audition")));

        ComboOption<std::string>* audition_synth = new ComboOption<std::string> (
                "midi-audition-synth-uri",
                _("Midi Audition Synth (LV2)"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_midi_audition_synth_uri),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_midi_audition_synth_uri)
                );

        audition_synth->add(X_(""), _("None"));
        PluginInfoList all_plugs;
        PluginManager& manager (PluginManager::instance());
#ifdef LV2_SUPPORT
        all_plugs.insert (all_plugs.end(), manager.lv2_plugin_info().begin(), manager.lv2_plugin_info().end());

        for (PluginInfoList::const_iterator i = all_plugs.begin(); i != all_plugs.end(); ++i) {
                if (manager.get_status (*i) == PluginManager::Hidden) continue;
                if (!(*i)->is_instrument()) continue;
                if ((*i)->type != ARDOUR::LV2) continue;
                audition_synth->add((*i)->unique_id, (*i)->name);
        }
#endif

        add_option (_("MIDI"), audition_synth);

        /* USER INTERACTION */

        if (
#ifdef PLATFORM_WINDOWS
                        true
#else
                        getenv ("ARDOUR_BUNDLED")
#endif
           )
        {
                add_option (_("User interaction"), 
                            new BoolOption (
                                    "enable-translation",
                                    string_compose (_("Use translations of %1 messages\n"
                                                      "   <i>(requires a restart of %1 to take effect)</i>\n"
                                                      "   <i>(if available for your language preferences)</i>"), PROGRAM_NAME),
                                    sigc::ptr_fun (ARDOUR::translations_are_enabled),
                                    sigc::ptr_fun (ARDOUR::set_translations_enabled)));
        }

        add_option (_("User interaction"), new OptionEditorHeading (_("Keyboard")));

        add_option (_("User interaction"), new KeyboardOptions);

        /* Control Surfaces */

        add_option (_("Control Surfaces"), new ControlSurfacesOptions (*this));

        ComboOption<RemoteModel>* rm = new ComboOption<RemoteModel> (
                "remote-model",
                _("Control surface remote ID"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_remote_model),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_remote_model)
                );

        rm->add (UserOrdered, _("assigned by user"));
        rm->add (MixerOrdered, _("follows order of mixer"));

        add_option (_("Control Surfaces"), rm);

        /* VIDEO Timeline */
        add_option (_("Video"), new VideoTimelineOptions (_rc_config));

#if (defined WINDOWS_VST_SUPPORT || defined LXVST_SUPPORT || defined AUDIOUNIT_SUPPORT)
        /* Plugin options (currrently VST only) */
        add_option (_("Plugins"), new PluginOptions (_rc_config, _ui_config));
#endif

        /* INTERFACE */

        add_option (S_("Preferences|GUI"),
             new BoolOption (
                     "widget-prelight",
                     _("Graphically indicate mouse pointer hovering over various widgets"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_widget_prelight),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_widget_prelight)
                     ));

#ifdef TOOLTIPS_GOT_FIXED
        add_option (S_("Preferences|GUI"),
             new BoolOption (
                     "use-tooltips",
                     _("Show tooltips if mouse hovers over a control"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_use_tooltips),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_use_tooltips)
                     ));
#endif

        add_option (S_("Preferences|GUI"),
             new BoolOption (
                     "show-name-highlight",
                     _("Use name highlight bars in region displays (requires a restart)"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_show_name_highlight),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_show_name_highlight)
                     ));

#ifndef GTKOSX
        /* font scaling does nothing with GDK/Quartz */
        add_option (S_("Preferences|GUI"), new FontScalingOptions (_ui_config));
#endif

        add_option (S_("GUI"),
                    new BoolOption (
                            "super-rapid-clock-update",
                            _("update transport clock display at FPS instead of every 100ms"),
                            sigc::mem_fun (*_ui_config, &UIConfiguration::get_super_rapid_clock_update),
                            sigc::mem_fun (*_ui_config, &UIConfiguration::set_super_rapid_clock_update)
                            ));

        /* Lock GUI timeout */

        Gtk::Adjustment *lts = manage (new Gtk::Adjustment(0, 0, 1000, 1, 10));
        HSliderOption *slts = new HSliderOption("lock-gui-after-seconds",
                                                _("Lock timeout (seconds)"),
                                                lts,
                                                sigc::mem_fun (*ARDOUR_UI::config(), &UIConfiguration::get_lock_gui_after_seconds),
                                                sigc::mem_fun (*ARDOUR_UI::config(), &UIConfiguration::set_lock_gui_after_seconds)
                        );
        slts->scale().set_digits (0);
        Gtkmm2ext::UI::instance()->set_tip
                (slts->tip_widget(),
                 _("Lock GUI after this many idle seconds (zero to never lock)"));
        add_option (S_("Preferences|GUI"), slts);

        /* The names of these controls must be the same as those given in MixerStrip
           for the actual widgets being controlled.
        */
        _mixer_strip_visibility.add (0, X_("Input"), _("Input"));
        _mixer_strip_visibility.add (0, X_("PhaseInvert"), _("Phase Invert"));
        _mixer_strip_visibility.add (0, X_("RecMon"), _("Record & Monitor"));
        _mixer_strip_visibility.add (0, X_("SoloIsoLock"), _("Solo Iso / Lock"));
        _mixer_strip_visibility.add (0, X_("Output"), _("Output"));
        _mixer_strip_visibility.add (0, X_("Comments"), _("Comments"));
        
        add_option (
                S_("Preferences|GUI"),
                new VisibilityOption (
                        _("Mixer Strip"),
                        &_mixer_strip_visibility,
                        sigc::mem_fun (*_ui_config, &UIConfiguration::get_mixer_strip_visibility),
                        sigc::mem_fun (*_ui_config, &UIConfiguration::set_mixer_strip_visibility)
                        )
                );

        add_option (S_("Preferences|GUI"),
             new BoolOption (
                     "default-narrow_ms",
                     _("Use narrow strips in the mixer by default"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_default_narrow_ms),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_default_narrow_ms)
                     ));

        add_option (S_("Preferences|Metering"), new OptionEditorHeading (_("Metering")));

        ComboOption<float>* mht = new ComboOption<float> (
                "meter-hold",
                _("Peak hold time"),
                sigc::mem_fun (*_ui_config, &UIConfiguration::get_meter_hold),
                sigc::mem_fun (*_ui_config, &UIConfiguration::set_meter_hold)
                );

        mht->add (MeterHoldOff, _("off"));
        mht->add (MeterHoldShort, _("short"));
        mht->add (MeterHoldMedium, _("medium"));
        mht->add (MeterHoldLong, _("long"));

        add_option (S_("Preferences|Metering"), mht);

        ComboOption<float>* mfo = new ComboOption<float> (
                "meter-falloff",
                _("DPM fall-off"),
                sigc::mem_fun (*_rc_config, &RCConfiguration::get_meter_falloff),
                sigc::mem_fun (*_rc_config, &RCConfiguration::set_meter_falloff)
                );

        mfo->add (METER_FALLOFF_OFF,      _("off"));
        mfo->add (METER_FALLOFF_SLOWEST,  _("slowest [6.6dB/sec]"));
        mfo->add (METER_FALLOFF_SLOW,     _("slow [8.6dB/sec] (BBC PPM, EBU PPM)"));
        mfo->add (METER_FALLOFF_SLOWISH,  _("slowish [12.0dB/sec] (DIN)"));
        mfo->add (METER_FALLOFF_MODERATE, _("moderate [13.3dB/sec] (EBU Digi PPM, IRT Digi PPM)"));
        mfo->add (METER_FALLOFF_MEDIUM,   _("medium [20dB/sec]"));
        mfo->add (METER_FALLOFF_FAST,     _("fast [32dB/sec]"));
        mfo->add (METER_FALLOFF_FASTER,   _("faster [46dB/sec]"));
        mfo->add (METER_FALLOFF_FASTEST,  _("fastest [70dB/sec]"));

        add_option (S_("Preferences|Metering"), mfo);

        ComboOption<MeterLineUp>* mlu = new ComboOption<MeterLineUp> (
                "meter-line-up-level",
                _("Meter line-up level; 0dBu"),
                sigc::mem_fun (*_ui_config, &UIConfiguration::get_meter_line_up_level),
                sigc::mem_fun (*_ui_config, &UIConfiguration::set_meter_line_up_level)
                );

        mlu->add (MeteringLineUp24, _("-24dBFS (SMPTE US: 4dBu = -20dBFS)"));
        mlu->add (MeteringLineUp20, _("-20dBFS (SMPTE RP.0155)"));
        mlu->add (MeteringLineUp18, _("-18dBFS (EBU, BBC)"));
        mlu->add (MeteringLineUp15, _("-15dBFS (DIN)"));

        Gtkmm2ext::UI::instance()->set_tip (mlu->tip_widget(), _("Configure meter-marks and color-knee point for dBFS scale DPM, set reference level for IEC1/Nordic, IEC2 PPM and VU meter."));

        add_option (S_("Preferences|Metering"), mlu);

        ComboOption<MeterLineUp>* mld = new ComboOption<MeterLineUp> (
                "meter-line-up-din",
                _("IEC1/DIN Meter line-up level; 0dBu"),
                sigc::mem_fun (*_ui_config, &UIConfiguration::get_meter_line_up_din),
                sigc::mem_fun (*_ui_config, &UIConfiguration::set_meter_line_up_din)
                );

        mld->add (MeteringLineUp24, _("-24dBFS (SMPTE US: 4dBu = -20dBFS)"));
        mld->add (MeteringLineUp20, _("-20dBFS (SMPTE RP.0155)"));
        mld->add (MeteringLineUp18, _("-18dBFS (EBU, BBC)"));
        mld->add (MeteringLineUp15, _("-15dBFS (DIN)"));

        Gtkmm2ext::UI::instance()->set_tip (mld->tip_widget(), _("Reference level for IEC1/DIN meter."));

        add_option (S_("Preferences|Metering"), mld);

        ComboOption<VUMeterStandard>* mvu = new ComboOption<VUMeterStandard> (
                "meter-vu-standard",
                _("VU Meter standard"),
                sigc::mem_fun (*_ui_config, &UIConfiguration::get_meter_vu_standard),
                sigc::mem_fun (*_ui_config, &UIConfiguration::set_meter_vu_standard)
                );

        mvu->add (MeteringVUfrench,   _("0VU = -2dBu (France)"));
        mvu->add (MeteringVUamerican, _("0VU = 0dBu (North America, Australia)"));
        mvu->add (MeteringVUstandard, _("0VU = +4dBu (standard)"));
        mvu->add (MeteringVUeight,    _("0VU = +8dBu"));

        add_option (S_("Preferences|Metering"), mvu);

        Gtk::Adjustment *mpk = manage (new Gtk::Adjustment(0, -10, 0, .1, .1));
        HSliderOption *mpks = new HSliderOption("meter-peak",
                        _("Peak threshold [dBFS]"),
                        mpk,
                        sigc::mem_fun (*_ui_config, &UIConfiguration::get_meter_peak),
                        sigc::mem_fun (*_ui_config, &UIConfiguration::set_meter_peak)
                        );

        Gtkmm2ext::UI::instance()->set_tip
                (mpks->tip_widget(),
                 _("Specify the audio signal level in dbFS at and above which the meter-peak indicator will flash red."));

        add_option (S_("Preferences|Metering"), mpks);

        add_option (S_("Preferences|Metering"),
             new BoolOption (
                     "meter-style-led",
                     _("LED meter style"),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::get_meter_style_led),
                     sigc::mem_fun (*_ui_config, &UIConfiguration::set_meter_style_led)
                     ));

        /* and now the theme manager */

        ThemeManager* tm = manage (new ThemeManager);
        add_page (_("Theme"), *tm);
}

void
RCOptionEditor::parameter_changed (string const & p)
{
        OptionEditor::parameter_changed (p);

        if (p == "use-monitor-bus") {
                bool const s = Config->get_use_monitor_bus ();
                if (!s) {
                        /* we can't use this if we don't have a monitor bus */
                        Config->set_solo_control_is_listen_control (false);
                }
                _solo_control_is_listen_control->set_sensitive (s);
                _listen_position->set_sensitive (s);
        } else if (p == "sync-source") {
                _sync_source->set_sensitive (true);
                if (_session) {
                        _sync_source->set_sensitive (!_session->config.get_external_sync());
                }
                switch(Config->get_sync_source()) {
                case ARDOUR::MTC:
                case ARDOUR::LTC:
                        _sync_genlock->set_sensitive (true);
                        _sync_framerate->set_sensitive (true);
                        _sync_source_2997->set_sensitive (true);
                        break;
                default:
                        _sync_genlock->set_sensitive (false);
                        _sync_framerate->set_sensitive (false);
                        _sync_source_2997->set_sensitive (false);
                        break;
                }
        } else if (p == "send-ltc") {
                bool const s = Config->get_send_ltc ();
                _ltc_send_continuously->set_sensitive (s);
                _ltc_volume_slider->set_sensitive (s);
        }
}

void RCOptionEditor::ltc_generator_volume_changed () {
        _rc_config->set_ltc_output_volume (pow(10, _ltc_volume_adjustment->get_value() / 20));
}

void
RCOptionEditor::populate_sync_options ()
{
        vector<SyncSource> sync_opts = ARDOUR::get_available_sync_options ();

        _sync_source->clear ();

        for (vector<SyncSource>::iterator i = sync_opts.begin(); i != sync_opts.end(); ++i) {
                _sync_source->add (*i, sync_source_to_string (*i));
        }

        if (sync_opts.empty()) {
                _sync_source->set_sensitive(false);
        } else {
                if (std::find(sync_opts.begin(), sync_opts.end(), _rc_config->get_sync_source()) == sync_opts.end()) {
                        _rc_config->set_sync_source(sync_opts.front());
                }
        }
}