Test fix for further osx modifier ambiguity.
[ardour.git] / gtk2_ardour / rc_option_editor.cc
index 0fdaaae902a60a0660be12ee3002ba7e33650a2d..e86c3a620ea1851b5c74e01a52bf9e41b4aa6ab6 100644 (file)
 #include "gtk2ardour-config.h"
 #endif
 
+#if !defined USE_CAIRO_IMAGE_SURFACE && !defined NDEBUG
+#define OPTIONAL_CAIRO_IMAGE_SURFACE
+#endif
+
 #include <cairo/cairo.h>
 
-#include <boost/algorithm/string.hpp>    
+#include <boost/algorithm/string.hpp>
 
 #include <gtkmm/liststore.h>
 #include <gtkmm/stock.h>
 
 #include "canvas/wave_view.h"
 
-#include "ardour_ui.h"
 #include "ardour_window.h"
 #include "ardour_dialog.h"
 #include "gui_thread.h"
+#include "meter_patterns.h"
 #include "midi_tracer.h"
 #include "rc_option_editor.h"
 #include "utils.h"
@@ -72,28 +76,52 @@ class ClickOptions : public OptionEditorBox
 public:
        ClickOptions (RCConfiguration* c, Gtk::Window* p)
                : _rc_config (c)
+               , _click_browse_button (_("Browse..."))
+               , _click_emphasis_browse_button (_("Browse..."))
        {
-               Table* t = manage (new Table (2, 3));
+               Table* t = manage (new Table (4, 3));
                t->set_spacings (4);
 
-               Label* l = manage (left_aligned_label (_("Click audio file:")));
+               Label* l = manage (left_aligned_label (_("Use default Click:")));
                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);
+               t->attach (_use_default_click_check_button, 1, 2, 0, 1, FILL);
+               _use_default_click_check_button.signal_toggled().connect (
+                   sigc::mem_fun (*this, &ClickOptions::use_default_click_toggled));
 
-               l = manage (left_aligned_label (_("Click emphasis audio file:")));
+               l = manage (left_aligned_label (_("Emphasis on first beat:")));
                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);
-               
+               t->attach (_use_emphasis_on_click_check_button, 1, 2, 1, 2, FILL);
+               _use_emphasis_on_click_check_button.signal_toggled().connect (
+                   sigc::mem_fun (*this, &ClickOptions::use_emphasis_on_click_toggled));
+
+               l = manage (left_aligned_label (_("Click audio file:")));
+               t->attach (*l, 0, 1, 2, 3, FILL);
+               t->attach (_click_path_entry, 1, 2, 2, 3, FILL);
+               _click_browse_button.signal_clicked ().connect (
+                   sigc::mem_fun (*this, &ClickOptions::click_browse_clicked));
+               t->attach (_click_browse_button, 2, 3, 2, 3, FILL);
+
+               l = manage (left_aligned_label (_("Click emphasis audio file:")));
+               t->attach (*l, 0, 1, 3, 4, FILL);
+               t->attach (_click_emphasis_path_entry, 1, 2, 3, 4, FILL);
+               _click_emphasis_browse_button.signal_clicked ().connect (
+                   sigc::mem_fun (*this, &ClickOptions::click_emphasis_browse_clicked));
+               t->attach (_click_emphasis_browse_button, 2, 3, 3, 4, FILL);
+
                _box->pack_start (*t, false, false);
 
-               _click_path_entry.signal_activate().connect (sigc::mem_fun (*this, &ClickOptions::click_changed));      
+               _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));
+
+               if (_rc_config->get_click_sound ().empty() &&
+                   _rc_config->get_click_emphasis_sound().empty()) {
+                       _use_default_click_check_button.set_active (true);
+                       _use_emphasis_on_click_check_button.set_active (true);
+
+               } else {
+                       _use_default_click_check_button.set_active (false);
+                       _use_emphasis_on_click_check_button.set_active (false);
+               }
        }
 
        void parameter_changed (string const & p)
@@ -102,6 +130,9 @@ public:
                        _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());
+               } else if (p == "use-click-emphasis") {
+                       bool x = _rc_config->get_use_click_emphasis ();
+                       _use_emphasis_on_click_check_button.set_active (x);
                }
        }
 
@@ -109,6 +140,7 @@ public:
        {
                parameter_changed ("click-sound");
                parameter_changed ("click-emphasis-sound");
+               parameter_changed ("use-click-emphasis");
        }
 
 private:
@@ -135,7 +167,7 @@ private:
        {
                click_chosen (_click_path_entry.get_text ());
        }
-       
+
        void click_emphasis_browse_clicked ()
        {
                SoundFileChooser sfdb (_("Choose Click Emphasis"));
@@ -159,9 +191,39 @@ private:
                click_emphasis_chosen (_click_emphasis_path_entry.get_text ());
        }
 
+       void use_default_click_toggled ()
+       {
+               if (_use_default_click_check_button.get_active ()) {
+                       _rc_config->set_click_sound ("");
+                       _rc_config->set_click_emphasis_sound ("");
+                       _click_path_entry.set_sensitive (false);
+                       _click_emphasis_path_entry.set_sensitive (false);
+                       _click_browse_button.set_sensitive (false);
+                       _click_emphasis_browse_button.set_sensitive (false);
+               } else {
+                       _click_path_entry.set_sensitive (true);
+                       _click_emphasis_path_entry.set_sensitive (true);
+                       _click_browse_button.set_sensitive (true);
+                       _click_emphasis_browse_button.set_sensitive (true);
+               }
+       }
+
+       void use_emphasis_on_click_toggled ()
+       {
+               if (_use_emphasis_on_click_check_button.get_active ()) {
+                       _rc_config->set_use_click_emphasis(true);
+               } else {
+                       _rc_config->set_use_click_emphasis(false);
+               }
+       }
+
        RCConfiguration* _rc_config;
+       CheckButton _use_default_click_check_button;
+       CheckButton _use_emphasis_on_click_check_button;
        Entry _click_path_entry;
        Entry _click_emphasis_path_entry;
+       Button _click_browse_button;
+       Button _click_emphasis_browse_button;
 };
 
 class UndoOptions : public OptionEditorBox
@@ -268,14 +330,16 @@ static const struct {
           Option/Alt = Mod1
        */
        { "Key|Shift", GDK_SHIFT_MASK },
-       { "Command", GDK_META_MASK },
+       { "Command", GDK_MOD2_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 },
+       { "Command-Shift", GDK_MOD2_MASK|GDK_SHIFT_MASK },
+       { "Command-Option", GDK_MOD2_MASK|GDK_MOD1_MASK },
+       { "Command-Option-Control", GDK_MOD2_MASK|GDK_MOD1_MASK|GDK_CONTROL_MASK },
+       { "Option-Control", GDK_MOD1_MASK|GDK_CONTROL_MASK },
        { "Option-Shift", GDK_MOD1_MASK|GDK_SHIFT_MASK },
        { "Control-Shift", GDK_CONTROL_MASK|GDK_SHIFT_MASK },
-       { "Shift-Command-Option", GDK_MOD5_MASK|GDK_SHIFT_MASK|GDK_META_MASK },
+       { "Shift-Command-Option", GDK_MOD5_MASK|GDK_SHIFT_MASK|GDK_MOD2_MASK },
 
 #else
        { "Key|Shift", GDK_SHIFT_MASK },
@@ -283,9 +347,10 @@ static const struct {
        { "Alt", 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 },
        { "Alt-Windows", GDK_MOD1_MASK|GDK_MOD4_MASK },
+       { "Alt-Shift", GDK_MOD1_MASK|GDK_SHIFT_MASK },
+       { "Alt-Shift-Windows", GDK_MOD1_MASK|GDK_SHIFT_MASK|GDK_MOD4_MASK },
        { "Mod2", GDK_MOD2_MASK },
        { "Mod3", GDK_MOD3_MASK },
        { "Windows", GDK_MOD4_MASK },
@@ -306,6 +371,7 @@ public:
                  _insert_note_button_adjustment (3, 1, 5),
                  _insert_note_button_spin (_insert_note_button_adjustment)
        {
+               const Glib::ustring restart_msg = _("\nChanges to this setting will only persist after your project has been saved.");
                /* internationalize and prepare for use with combos */
 
                vector<string> dumb;
@@ -315,7 +381,8 @@ public:
 
                set_popdown_strings (_edit_modifier_combo, dumb);
                _edit_modifier_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::edit_modifier_chosen));
-
+               Gtkmm2ext::UI::instance()->set_tip (_edit_modifier_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1 + button 3</b>%2"),  Keyboard::copy_modifier_name (), restart_msg)));
                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));
@@ -376,7 +443,8 @@ public:
 
                set_popdown_strings (_delete_modifier_combo, dumb);
                _delete_modifier_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::delete_modifier_chosen));
-
+               Gtkmm2ext::UI::instance()->set_tip (_delete_modifier_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1 + button 3</b>%2"), Keyboard::tertiary_modifier_name (), restart_msg)));
                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));
@@ -405,7 +473,8 @@ public:
 
                set_popdown_strings (_insert_note_modifier_combo, dumb);
                _insert_note_modifier_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::insert_note_modifier_chosen));
-
+               Gtkmm2ext::UI::instance()->set_tip (_insert_note_modifier_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1 + button 1</b>%2"), Keyboard::copy_modifier_name (), restart_msg)));
                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));
@@ -441,7 +510,8 @@ public:
                /* copy modifier */
                set_popdown_strings (_copy_modifier_combo, dumb);
                _copy_modifier_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::copy_modifier_chosen));
-
+               Gtkmm2ext::UI::instance()->set_tip (_copy_modifier_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1</b>%2"), Keyboard::copy_modifier_name (), restart_msg)));
                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == (guint) Keyboard::CopyModifier) {
                                _copy_modifier_combo.set_active_text (S_(modifiers[x].name));
@@ -461,7 +531,8 @@ public:
                /* constraint modifier */
                set_popdown_strings (_constraint_modifier_combo, dumb);
                _constraint_modifier_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::constraint_modifier_chosen));
-
+               Gtkmm2ext::UI::instance()->set_tip (_constraint_modifier_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1</b>%2"), Keyboard::secondary_modifier_name (), restart_msg)));
                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == (guint) ArdourKeyboard::constraint_modifier ()) {
                                _constraint_modifier_combo.set_active_text (S_(modifiers[x].name));
@@ -487,7 +558,8 @@ public:
                /* trim_contents */
                set_popdown_strings (_trim_contents_combo, dumb);
                _trim_contents_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::trim_contents_modifier_chosen));
-
+               Gtkmm2ext::UI::instance()->set_tip (_trim_contents_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1</b>%2"), Keyboard::primary_modifier_name (), restart_msg)));
                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == (guint) ArdourKeyboard::trim_contents_modifier ()) {
                                _trim_contents_combo.set_active_text (S_(modifiers[x].name));
@@ -507,7 +579,8 @@ public:
                /* anchored trim */
                set_popdown_strings (_trim_anchored_combo, dumb);
                _trim_anchored_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::trim_anchored_modifier_chosen));
-
+               Gtkmm2ext::UI::instance()->set_tip (_trim_anchored_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1</b>%2"), Keyboard::tertiary_modifier_name (), restart_msg)));
                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == (guint) ArdourKeyboard::trim_anchored_modifier ()) {
                                _trim_anchored_combo.set_active_text (S_(modifiers[x].name));
@@ -550,7 +623,8 @@ public:
                /* note resize relative */
                set_popdown_strings (_note_size_relative_combo, dumb);
                _note_size_relative_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::note_size_relative_modifier_chosen));
-
+               Gtkmm2ext::UI::instance()->set_tip (_note_size_relative_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1</b>%2"), Keyboard::primary_modifier_name (), restart_msg)));
                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == (guint) ArdourKeyboard::note_size_relative_modifier ()) {
                                _note_size_relative_combo.set_active_text (S_(modifiers[x].name));
@@ -577,7 +651,13 @@ public:
                /* ignore snap */
                set_popdown_strings (_snap_modifier_combo, dumb);
                _snap_modifier_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::snap_modifier_chosen));
-
+#ifdef GTKOSX
+               Glib::ustring mod_str = string_compose (X_("%1-%2"), Keyboard::level4_modifier_name (), Keyboard::tertiary_modifier_name ());
+#else
+               Glib::ustring mod_str = Keyboard::secondary_modifier_name();
+#endif
+               Gtkmm2ext::UI::instance()->set_tip (_snap_modifier_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1</b>%2"), mod_str, restart_msg)));
                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));
@@ -597,7 +677,13 @@ public:
                /* snap delta */
                set_popdown_strings (_snap_delta_combo, dumb);
                _snap_delta_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::snap_delta_modifier_chosen));
-
+#ifdef GTKOSX
+               mod_str = Keyboard::level4_modifier_name ();
+#else
+               mod_str = string_compose (X_("%1-%2"), Keyboard::secondary_modifier_name (), Keyboard::level4_modifier_name ());
+#endif
+               Gtkmm2ext::UI::instance()->set_tip (_snap_delta_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1</b>%2"), mod_str, restart_msg)));
                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == (guint) Keyboard::snap_delta_modifier ()) {
                                _snap_delta_combo.set_active_text (S_(modifiers[x].name));
@@ -624,6 +710,8 @@ public:
                set_popdown_strings (_trim_overlap_combo, dumb);
                _trim_overlap_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::trim_overlap_modifier_chosen));
 
+               Gtkmm2ext::UI::instance()->set_tip (_trim_overlap_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1</b>%2"), Keyboard::tertiary_modifier_name (), restart_msg)));
                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == (guint) ArdourKeyboard::trim_overlap_modifier ()) {
                                _trim_overlap_combo.set_active_text (S_(modifiers[x].name));
@@ -631,7 +719,7 @@ public:
                        }
                }
 
-               l = manage (left_aligned_label (_("Resize overlaped regions using:")));
+               l = manage (left_aligned_label (_("Resize overlapped regions using:")));
                l->set_name ("OptionsLabel");
 
                t->attach (*l, col, col + 1, row, row + 1, FILL | EXPAND, FILL);
@@ -650,6 +738,9 @@ public:
                set_popdown_strings (_fine_adjust_combo, dumb);
                _fine_adjust_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::fine_adjust_modifier_chosen));
 
+               mod_str = string_compose (X_("%1-%2"), Keyboard::secondary_modifier_name (), Keyboard::tertiary_modifier_name ());
+               Gtkmm2ext::UI::instance()->set_tip (_fine_adjust_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1</b>%2"), mod_str, restart_msg)));
                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == (guint) ArdourKeyboard::fine_adjust_modifier ()) {
                                _fine_adjust_combo.set_active_text (S_(modifiers[x].name));
@@ -670,6 +761,8 @@ public:
                set_popdown_strings (_push_points_combo, dumb);
                _push_points_combo.signal_changed().connect (sigc::mem_fun(*this, &KeyboardOptions::push_points_modifier_chosen));
 
+               Gtkmm2ext::UI::instance()->set_tip (_push_points_combo,
+                                                   (string_compose (_("<b>Recommended Setting: %1</b>%2"), Keyboard::primary_modifier_name (), restart_msg)));
                for (int x = 0; modifiers[x].name; ++x) {
                        if (modifiers[x].modifier == (guint) ArdourKeyboard::push_points_modifier ()) {
                                _push_points_combo.set_active_text (S_(modifiers[x].name));
@@ -911,12 +1004,11 @@ private:
 class FontScalingOptions : public OptionEditorBox
 {
 public:
-       FontScalingOptions (UIConfiguration* uic) :
-               _ui_config (uic),
+       FontScalingOptions () :
                _dpi_adjustment (100, 50, 250, 1, 5),
                _dpi_slider (_dpi_adjustment)
        {
-               _dpi_adjustment.set_value (_ui_config->get_font_scale() / 1024.);
+               _dpi_adjustment.set_value (UIConfiguration::instance().get_font_scale() / 1024.);
 
                Label* l = manage (new Label (_("GUI and Font scaling:")));
                l->set_name ("OptionsLabel");
@@ -955,7 +1047,7 @@ public:
        void parameter_changed (string const & p)
        {
                if (p == "font-scale") {
-                       _dpi_adjustment.set_value (_ui_config->get_font_scale() / 1024.);
+                       _dpi_adjustment.set_value (UIConfiguration::instance().get_font_scale() / 1024.);
                }
        }
 
@@ -968,12 +1060,11 @@ private:
 
        void dpi_changed ()
        {
-               _ui_config->set_font_scale ((long) floor (_dpi_adjustment.get_value() * 1024.));
+               UIConfiguration::instance().set_font_scale ((long) floor (_dpi_adjustment.get_value() * 1024.));
                /* XXX: should be triggered from the parameter changed signal */
-               reset_dpi ();
+               UIConfiguration::instance().reset_dpi ();
        }
 
-       UIConfiguration* _ui_config;
        Adjustment _dpi_adjustment;
        HScale _dpi_slider;
 };
@@ -981,12 +1072,11 @@ private:
 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 */
+       ClipLevelOptions ()
+               : _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 ());
+               _clip_level_adjustment.set_value (UIConfiguration::instance().get_waveform_clip_level ());
 
                Label* l = manage (new Label (_("Waveform Clip Level (dBFS):")));
                l->set_name ("OptionsLabel");
@@ -1005,7 +1095,7 @@ public:
        void parameter_changed (string const & p)
        {
                if (p == "waveform-clip-level") {
-                       _clip_level_adjustment.set_value (_ui_config->get_waveform_clip_level());
+                       _clip_level_adjustment.set_value (UIConfiguration::instance().get_waveform_clip_level());
                }
        }
 
@@ -1018,12 +1108,11 @@ private:
 
        void clip_level_changed ()
        {
-               _ui_config->set_waveform_clip_level (_clip_level_adjustment.get_value());
+               UIConfiguration::instance().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;
 };
@@ -1038,13 +1127,34 @@ public:
                 , _playback_slider (_playback_adjustment)
                , _capture_slider (_capture_adjustment)
        {
+               vector<string> presets;
+
+               /* these must match the order of the enums for BufferingPreset */
+
+               presets.push_back (_("Small sessions (4-16 tracks)"));
+               presets.push_back (_("Medium sessions (16-64 tracks)"));
+               presets.push_back (_("Large sessions (64+ tracks)"));
+               presets.push_back (_("Custom (set by sliders below)"));
+
+               set_popdown_strings (_buffering_presets_combo, presets);
+
+               Label* l = manage (new Label (_("Preset:")));
+               l->set_name ("OptionsLabel");
+               HBox* h = manage (new HBox);
+               h->set_spacing (12);
+               h->pack_start (*l, false, false);
+               h->pack_start (_buffering_presets_combo, true, true);
+               _box->pack_start (*h, false, false);
+
+               _buffering_presets_combo.signal_changed().connect (sigc::mem_fun (*this, &BufferingOptions::preset_changed));
+
                _playback_adjustment.set_value (_rc_config->get_audio_playback_buffer_seconds());
 
-               Label* l = manage (new Label (_("Playback (seconds of buffering):")));
+               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 = manage (new HBox);
                h->set_spacing (4);
                h->pack_start (*l, false, false);
                h->pack_start (_playback_slider, true, true);
@@ -1070,6 +1180,31 @@ public:
 
        void parameter_changed (string const & p)
        {
+               if (p == "buffering-preset") {
+                       switch (_rc_config->get_buffering_preset()) {
+                       case Small:
+                               _playback_slider.set_sensitive (false);
+                               _capture_slider.set_sensitive (false);
+                               _buffering_presets_combo.set_active (0);
+                               break;
+                       case Medium:
+                               _playback_slider.set_sensitive (false);
+                               _capture_slider.set_sensitive (false);
+                               _buffering_presets_combo.set_active (1);
+                               break;
+                       case Large:
+                               _playback_slider.set_sensitive (false);
+                               _capture_slider.set_sensitive (false);
+                               _buffering_presets_combo.set_active (2);
+                               break;
+                       case Custom:
+                               _playback_slider.set_sensitive (true);
+                               _capture_slider.set_sensitive (true);
+                               _buffering_presets_combo.set_active (3);
+                               break;
+                       }
+               }
+
                if (p == "playback-buffer-seconds") {
                        _playback_adjustment.set_value (_rc_config->get_audio_playback_buffer_seconds());
                } else if (p == "capture-buffer-seconds") {
@@ -1079,12 +1214,38 @@ public:
 
        void set_state_from_config ()
        {
+               parameter_changed ("buffering-preset");
                parameter_changed ("playback-buffer-seconds");
                parameter_changed ("capture-buffer-seconds");
        }
 
 private:
 
+       void preset_changed ()
+       {
+               int index = _buffering_presets_combo.get_active_row_number ();
+               if (index < 0) {
+                       return;
+               }
+               switch (index) {
+               case 0:
+                       _rc_config->set_buffering_preset (Small);
+                       break;
+               case 1:
+                       _rc_config->set_buffering_preset (Medium);
+                       break;
+               case 2:
+                       _rc_config->set_buffering_preset (Large);
+                       break;
+               case 3:
+                       _rc_config->set_buffering_preset (Custom);
+                       break;
+               default:
+                       error << string_compose (_("programming error: unknown buffering preset string, index = %1"), index) << endmsg;
+                       break;
+               }
+       }
+
        void playback_changed ()
        {
                _rc_config->set_audio_playback_buffer_seconds ((long) _playback_adjustment.get_value());
@@ -1100,6 +1261,7 @@ private:
        Adjustment _capture_adjustment;
        HScale _playback_slider;
        HScale _capture_slider;
+       ComboBoxText _buffering_presets_combo;
 };
 
 class ControlSurfacesOptions : public OptionEditorBox
@@ -1160,7 +1322,7 @@ 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]);
 
@@ -1393,12 +1555,12 @@ private:
 class PluginOptions : public OptionEditorBox
 {
 public:
-       PluginOptions (RCConfiguration* c, UIConfiguration* uic)
+       PluginOptions (RCConfiguration* c)
                : _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"))
+               , _verbose_plugin_scan (_("Verbose Plugin Scan"))
                , _timeout_adjustment (0, 0, 3000, 50, 50)
                , _timeout_slider (_timeout_adjustment)
        {
@@ -1460,17 +1622,23 @@ public:
                                            _("<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);
+               t->attach (*manage (right_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);
+               t->attach (*manage (right_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;
+
+               // currently verbose logging is only implemented for Windows VST.
+               t->attach (_verbose_plugin_scan, 0, 2, n, n+1); ++n;
+               _verbose_plugin_scan.signal_toggled().connect (sigc::mem_fun (*this, &PluginOptions::verbose_plugin_scan_toggled));
+               Gtkmm2ext::UI::instance()->set_tip (_verbose_plugin_scan,
+                                           _("<b>When enabled</b> additional information for every plugin is added to the Log Window."));
 #endif
 #endif // any VST
 
@@ -1503,7 +1671,7 @@ public:
 
        void parameter_changed (string const & p) {
                if (p == "show-plugin-scan-window") {
-                       bool const x = _ui_config->get_show_plugin_scan_window();
+                       bool const x = UIConfiguration::instance().get_show_plugin_scan_window();
                        _display_plugin_scan_progress.set_active (x);
                }
                else if (p == "discover-vst-on-start") {
@@ -1518,6 +1686,10 @@ public:
                        bool const x = _rc_config->get_discover_audio_units();
                        _discover_au_on_start.set_active (x);
                }
+               else if (p == "verbose-plugin-scan") {
+                       bool const x = _rc_config->get_verbose_plugin_scan();
+                       _verbose_plugin_scan.set_active (x);
+               }
        }
 
        void set_state_from_config () {
@@ -1525,20 +1697,21 @@ public:
                parameter_changed ("discover-vst-on-start");
                parameter_changed ("vst-scan-timeout");
                parameter_changed ("discover-audio-units");
+               parameter_changed ("verbose-plugin-scan");
        }
 
 private:
        RCConfiguration* _rc_config;
-       UIConfiguration* _ui_config;
        CheckButton _display_plugin_scan_progress;
        CheckButton _discover_vst_on_start;
        CheckButton _discover_au_on_start;
+       CheckButton _verbose_plugin_scan;
        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);
+               UIConfiguration::instance().set_show_plugin_scan_window(x);
        }
 
        void discover_vst_on_start_toggled () {
@@ -1551,6 +1724,11 @@ private:
                _rc_config->set_discover_audio_units(x);
        }
 
+       void verbose_plugin_scan_toggled () {
+               bool const x = _verbose_plugin_scan.get_active();
+               _rc_config->set_verbose_plugin_scan(x);
+       }
+
        void timeout_changed () {
                int x = floor(_timeout_adjustment.get_value());
                _rc_config->set_vst_scan_timeout(x);
@@ -1660,7 +1838,7 @@ private:
                */
                _set (_visibility_group->get_state_value ());
        }
-       
+
        OptionEditorHeading _heading;
        VisibilityGroup* _visibility_group;
        sigc::slot<std::string> _get;
@@ -1673,7 +1851,6 @@ private:
 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 */
@@ -1730,8 +1907,8 @@ RCOptionEditor::RCOptionEditor ()
             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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_only_copy_imported_files),
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_only_copy_imported_files)
                     ));
 
        add_option (_("Misc"), new DirectoryOption (
@@ -1784,6 +1961,8 @@ RCOptionEditor::RCOptionEditor ()
 
        /* TRANSPORT */
 
+       add_option (_("Transport"), new OptionEditorHeading (S_("Transport Options")));
+
        BoolOption* tsf;
 
        tsf = new BoolOption (
@@ -1801,18 +1980,18 @@ RCOptionEditor::RCOptionEditor ()
                     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(), 
+       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(), 
+       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);
@@ -1832,7 +2011,7 @@ RCOptionEditor::RCOptionEditor ()
                     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(), 
+       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"),
@@ -1845,7 +2024,7 @@ RCOptionEditor::RCOptionEditor ()
                     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(), 
+       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 "
@@ -1888,7 +2067,7 @@ RCOptionEditor::RCOptionEditor ()
                     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 
+       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"
@@ -1904,7 +2083,7 @@ RCOptionEditor::RCOptionEditor ()
                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 
+       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 "
@@ -1997,8 +2176,8 @@ RCOptionEditor::RCOptionEditor ()
             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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_draggable_playhead),
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_draggable_playhead)
                     ));
 
        add_option (_("Editor"),
@@ -2013,16 +2192,16 @@ RCOptionEditor::RCOptionEditor ()
             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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_show_track_meters),
+                    sigc::mem_fun (UIConfiguration::instance(), &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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_show_editor_meter),
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_show_editor_meter)
                     ));
 
        ComboOption<FadeShape>* fadeshape = new ComboOption<FadeShape> (
@@ -2070,16 +2249,16 @@ RCOptionEditor::RCOptionEditor ()
             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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_rubberbanding_snaps_to_grid),
+                    sigc::mem_fun (UIConfiguration::instance(), &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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_show_waveforms),
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_show_waveforms)
                     ));
 
        add_option (_("Editor"),
@@ -2088,15 +2267,15 @@ RCOptionEditor::RCOptionEditor ()
                     _("Show gain envelopes in audio regions"),
                     _("in all modes"),
                     _("only in Draw and Internal Edit modes"),
-                    sigc::mem_fun (*_ui_config, &UIConfiguration::get_show_region_gain),
-                    sigc::mem_fun (*_ui_config, &UIConfiguration::set_show_region_gain)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_show_region_gain),
+                    sigc::mem_fun (UIConfiguration::instance(), &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)
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_waveform_scale),
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_waveform_scale)
                );
 
        wfs->add (Linear, _("linear"));
@@ -2107,8 +2286,8 @@ RCOptionEditor::RCOptionEditor ()
        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)
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_waveform_shape),
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_waveform_shape)
                );
 
        wfsh->add (Traditional, _("traditional"));
@@ -2116,39 +2295,39 @@ RCOptionEditor::RCOptionEditor ()
 
        add_option (_("Editor"), wfsh);
 
-       add_option (_("Editor"), new ClipLevelOptions (_ui_config));
+       add_option (_("Editor"), new ClipLevelOptions ());
 
        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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_show_waveforms_while_recording),
+                    sigc::mem_fun (UIConfiguration::instance(), &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)
+                           sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_show_zoom_tools),
+                           sigc::mem_fun (UIConfiguration::instance(), &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)
+                           sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_update_editor_during_summary_drag),
+                           sigc::mem_fun (UIConfiguration::instance(), &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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_name_new_markers),
+                    sigc::mem_fun (UIConfiguration::instance(), &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"));
@@ -2157,8 +2336,8 @@ RCOptionEditor::RCOptionEditor ()
            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)
+                   sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_autoscroll_editor),
+                   sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_autoscroll_editor)
                    ));
 
        ComboOption<RegionSelectionAfterSplit> *rsas = new ComboOption<RegionSelectionAfterSplit> (
@@ -2269,23 +2448,23 @@ RCOptionEditor::RCOptionEditor ()
        int dmsize = 1;
        dm->add (DenormalNone, _("no processor handling"));
 
-       FPU fpu;
+       FPU* fpu = FPU::instance();
 
-       if (fpu.has_flush_to_zero()) {
+       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()) {
+       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()) {
+       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) {
@@ -2559,16 +2738,16 @@ RCOptionEditor::RCOptionEditor ()
             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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_never_display_periodic_midi),
+                    sigc::mem_fun (UIConfiguration::instance(), &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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_sound_midi_notes),
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_sound_midi_notes)
                     ));
 
        add_option (_("MIDI"), new OptionEditorHeading (_("Midi Audition")));
@@ -2606,7 +2785,7 @@ RCOptionEditor::RCOptionEditor ()
 #endif
           )
        {
-               add_option (_("User interaction"), 
+               add_option (_("User interaction"),
                            new BoolOption (
                                    "enable-translation",
                                    string_compose (_("Use translations of %1 messages\n"
@@ -2641,29 +2820,42 @@ RCOptionEditor::RCOptionEditor ()
 
 #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));
+       add_option (_("Plugins"), new PluginOptions (_rc_config));
 #endif
 
        /* INTERFACE */
 
+#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
+       BoolOption* bgc = new BoolOption (
+               "cairo-image-surface",
+               _("Disable Graphics Hardware Acceleration (requires restart)"),
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_cairo_image_surface),
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_cairo_image_surface)
+               );
+
+       Gtkmm2ext::UI::instance()->set_tip (bgc->tip_widget(), string_compose (
+                               _("Render large parts of the application user-interface in software, instead of using 2D-graphics acceleration.\nThis requires restarting %1 before having an effect"), PROGRAM_NAME));
+       add_option (S_("Preferences|GUI"), bgc);
+#endif
+
 #ifdef CAIRO_SUPPORTS_FORCE_BUGGY_GRADIENTS_ENVIRONMENT_VARIABLE
        BoolOption* bgo = new BoolOption (
                "buggy-gradients",
-               _("Possibly improve slow graphical performance"),
-               sigc::mem_fun (*_ui_config, &UIConfiguration::get_buggy_gradients),
-               sigc::mem_fun (*_ui_config, &UIConfiguration::set_buggy_gradients)
+               _("Possibly improve slow graphical performance (requires restart)"),
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_buggy_gradients),
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_buggy_gradients)
                );
 
-       Gtkmm2ext::UI::instance()->set_tip (bgo->tip_widget(), string_compose (_("This requires restarting %1 before having an effect"), PROGRAM_NAME));
+       Gtkmm2ext::UI::instance()->set_tip (bgo->tip_widget(), string_compose (_("Disables hardware gradient rendering on buggy video drivers (\"buggy gradients patch\").\nThis requires restarting %1 before having an effect"), PROGRAM_NAME));
        add_option (S_("Preferences|GUI"), bgo);
 #endif
-       
+
        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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_widget_prelight),
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_widget_prelight)
                     ));
 
 #ifdef TOOLTIPS_GOT_FIXED
@@ -2671,8 +2863,8 @@ RCOptionEditor::RCOptionEditor ()
             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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_use_tooltips),
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_use_tooltips)
                     ));
 #endif
 
@@ -2680,21 +2872,21 @@ RCOptionEditor::RCOptionEditor ()
             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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_show_name_highlight),
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_show_name_highlight)
                     ));
 
 #ifndef GTKOSX
        /* font scaling does nothing with GDK/Quartz */
-       add_option (S_("Preferences|GUI"), new FontScalingOptions (_ui_config));
+       add_option (S_("Preferences|GUI"), new FontScalingOptions ());
 #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)
+                           sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_super_rapid_clock_update),
+                           sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_super_rapid_clock_update)
                            ));
 
 
@@ -2704,23 +2896,23 @@ RCOptionEditor::RCOptionEditor ()
        HSliderOption *sics = new HSliderOption("waveform-cache-size",
                                                _("Waveform image cache size (megabytes)"),
                                                ics,
-                                               sigc::mem_fun (*ARDOUR_UI::config(), &UIConfiguration::get_waveform_cache_size),
-                                               sigc::mem_fun (*ARDOUR_UI::config(), &UIConfiguration::set_waveform_cache_size)
+                                               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_waveform_cache_size),
+                                               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_waveform_cache_size)
                        );
        sics->scale().set_digits (0);
        Gtkmm2ext::UI::instance()->set_tip
                (sics->tip_widget(),
-                _("Larger values lead to using more memory to store images of waveforms, which can improve graphical performance."));
+                _("Increasing the cache size uses more memory to store waveform images, which can improve graphical performance."));
        add_option (S_("Preferences|GUI"), sics);
-       
+
        /* 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)
+                                               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_lock_gui_after_seconds),
+                                               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_lock_gui_after_seconds)
                        );
        slts->scale().set_digits (0);
        Gtkmm2ext::UI::instance()->set_tip
@@ -2737,14 +2929,14 @@ RCOptionEditor::RCOptionEditor ()
        _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)
+                       sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_mixer_strip_visibility),
+                       sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_mixer_strip_visibility)
                        )
                );
 
@@ -2752,8 +2944,8 @@ RCOptionEditor::RCOptionEditor ()
             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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_default_narrow_ms),
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_default_narrow_ms)
                     ));
 
        add_option (S_("Preferences|Metering"), new OptionEditorHeading (_("Metering")));
@@ -2761,8 +2953,8 @@ RCOptionEditor::RCOptionEditor ()
        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)
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_meter_hold),
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_meter_hold)
                );
 
        mht->add (MeterHoldOff, _("off"));
@@ -2782,20 +2974,18 @@ RCOptionEditor::RCOptionEditor ()
        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]"));
+       mfo->add (METER_FALLOFF_SLOWISH,  _("moderate [12.0dB/sec] (DIN)"));
+       mfo->add (METER_FALLOFF_MODERATE, _("medium [13.3dB/sec] (EBU Digi PPM, IRT Digi PPM)"));
+       mfo->add (METER_FALLOFF_MEDIUM,   _("fast [20dB/sec]"));
+       mfo->add (METER_FALLOFF_FAST,     _("very fast [32dB/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)
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_meter_line_up_level),
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_meter_line_up_level)
                );
 
        mlu->add (MeteringLineUp24, _("-24dBFS (SMPTE US: 4dBu = -20dBFS)"));
@@ -2810,8 +3000,8 @@ RCOptionEditor::RCOptionEditor ()
        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)
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_meter_line_up_din),
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_meter_line_up_din)
                );
 
        mld->add (MeteringLineUp24, _("-24dBFS (SMPTE US: 4dBu = -20dBFS)"));
@@ -2826,8 +3016,8 @@ RCOptionEditor::RCOptionEditor ()
        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)
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_meter_vu_standard),
+               sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_meter_vu_standard)
                );
 
        mvu->add (MeteringVUfrench,   _("0VU = -2dBu (France)"));
@@ -2841,10 +3031,58 @@ RCOptionEditor::RCOptionEditor ()
        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)
+                       sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_meter_peak),
+                       sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_meter_peak)
                        );
 
+
+       ComboOption<MeterType>* mtm = new ComboOption<MeterType> (
+               "meter-type-master",
+               _("Default Meter Type for Master Bus"),
+               sigc::mem_fun (*_rc_config, &RCConfiguration::get_meter_type_master),
+               sigc::mem_fun (*_rc_config, &RCConfiguration::set_meter_type_master)
+               );
+       mtm->add (MeterPeak,    ArdourMeter::meter_type_string(MeterPeak));
+       mtm->add (MeterK20,     ArdourMeter::meter_type_string(MeterK20));
+       mtm->add (MeterK14,     ArdourMeter::meter_type_string(MeterK14));
+       mtm->add (MeterK12,     ArdourMeter::meter_type_string(MeterK12));
+       mtm->add (MeterIEC1DIN, ArdourMeter::meter_type_string(MeterIEC1DIN));
+       mtm->add (MeterIEC1NOR, ArdourMeter::meter_type_string(MeterIEC1NOR));
+       mtm->add (MeterIEC2BBC, ArdourMeter::meter_type_string(MeterIEC2BBC));
+       mtm->add (MeterIEC2EBU, ArdourMeter::meter_type_string(MeterIEC2EBU));
+
+       add_option (S_("Preferences|Metering"), mtm);
+
+
+       ComboOption<MeterType>* mtb = new ComboOption<MeterType> (
+               "meter-type-bus",
+               _("Default Meter Type for Busses"),
+               sigc::mem_fun (*_rc_config, &RCConfiguration::get_meter_type_bus),
+               sigc::mem_fun (*_rc_config, &RCConfiguration::set_meter_type_bus)
+               );
+       mtb->add (MeterPeak,    ArdourMeter::meter_type_string(MeterPeak));
+       mtb->add (MeterK20,     ArdourMeter::meter_type_string(MeterK20));
+       mtb->add (MeterK14,     ArdourMeter::meter_type_string(MeterK14));
+       mtb->add (MeterK12,     ArdourMeter::meter_type_string(MeterK12));
+       mtb->add (MeterIEC1DIN, ArdourMeter::meter_type_string(MeterIEC1DIN));
+       mtb->add (MeterIEC1NOR, ArdourMeter::meter_type_string(MeterIEC1NOR));
+       mtb->add (MeterIEC2BBC, ArdourMeter::meter_type_string(MeterIEC2BBC));
+       mtb->add (MeterIEC2EBU, ArdourMeter::meter_type_string(MeterIEC2EBU));
+
+       add_option (S_("Preferences|Metering"), mtb);
+
+       ComboOption<MeterType>* mtt = new ComboOption<MeterType> (
+               "meter-type-track",
+               _("Default Meter Type for Tracks"),
+               sigc::mem_fun (*_rc_config, &RCConfiguration::get_meter_type_track),
+               sigc::mem_fun (*_rc_config, &RCConfiguration::set_meter_type_track)
+               );
+       mtt->add (MeterPeak,    ArdourMeter::meter_type_string(MeterPeak));
+       mtt->add (MeterPeak0dB, ArdourMeter::meter_type_string(MeterPeak0dB));
+
+       add_option (S_("Preferences|Metering"), mtt);
+
+
        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."));
@@ -2855,8 +3093,8 @@ RCOptionEditor::RCOptionEditor ()
             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)
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::get_meter_style_led),
+                    sigc::mem_fun (UIConfiguration::instance(), &UIConfiguration::set_meter_style_led)
                     ));
 
        /* and now the theme manager */