convert all mixer strip buttons to ArdourButton; not entirely finished because colors in the name and comments buttons don't work as intended - needs a bit of thinking

git-svn-id: svn://localhost/ardour2/branches/3.0@10830 d708f5d6-7413-0410-9779-e7cbd77b26cf

7 files changed, 106 insertions, 99 deletions

diff --git a/gtk2_ardour/ardour3_ui_default.conf b/gtk2_ardour/ardour3_ui_default.conf
index 8c9c65ce1a..9669b20e38 100644
--- a/gtk2_ardour/ardour3_ui_default.conf
+++ b/gtk2_ardour/ardour3_ui_default.conf
@@ -495,6 +495,21 @@
     <Option name="send alert button: text" value="ccccccff"/>
     <Option name="send alert button: text active" value="000000ff"/>
     <Option name="send alert button: text mid" value="00000000"/>
+    <Option name="midi input button: border start" value="9e9e9eff"/>
+    <Option name="midi input button: border end" value="070707ff"/>
+    <Option name="midi input button: border start selected" value="00000000"/>
+    <Option name="midi input button: border end selected" value="00000000"/>
+    <Option name="midi input button: fill start" value="656867ff"/>
+    <Option name="midi input button: fill end" value="333333ff"/>
+    <Option name="midi input button: fill start active" value="a1ff43ff"/>
+    <Option name="midi input button: fill end active" value="00a300ff"/>
+    <Option name="midi input button: fill start mid" value="000000ff"/>
+    <Option name="midi input button: fill end mid" value="00000000"/>
+    <Option name="midi input button: led" value="00000000"/>
+    <Option name="midi input button: led active" value="00000000"/>
+    <Option name="midi input button: led mid" value="00000000"/>
+    <Option name="midi input button: text" value="00000000"/>
+    <Option name="midi input button: text active" value="00000000"/>
     <Option name="transport button: border start" value="9e9e9eff"/>
     <Option name="transport button: border end" value="070707ff"/>
     <Option name="transport button: border start selected" value="00000000"/>
@@ -639,6 +654,38 @@
     <Option name="route button: text" value="c7c7d8ff"/>
     <Option name="route button: text active" value="c8c8d9ff"/>
     <Option name="route button: text mid" value="000000ff"/>
+    <Option name="mixer strip button: border start" value="b7b7d2ff"/>
+    <Option name="mixer strip button: border end" value="000000ff"/>
+    <Option name="mixer strip button: border start selected" value="8e8e9aff"/>
+    <Option name="mixer strip button: border end selected" value="5b5b67ff"/>
+    <Option name="mixer strip button: fill start" value="56565dff"/>
+    <Option name="mixer strip button: fill end" value="484856ff"/>
+    <Option name="mixer strip button: fill start active" value="4d4d4dff"/>
+    <Option name="mixer strip button: fill end active" value="121212ff"/>
+    <Option name="mixer strip button: fill start mid" value="57565dff"/>
+    <Option name="mixer strip button: fill end mid" value="484856ff"/>
+    <Option name="mixer strip button: led" value="4f3300ff"/>
+    <Option name="mixer strip button: led active" value="ffa500ff"/>
+    <Option name="mixer strip button: led mid" value="b87700ff"/>
+    <Option name="mixer strip button: text" value="c7c7d8ff"/>
+    <Option name="mixer strip button: text active" value="c8c8d9ff"/>
+    <Option name="mixer strip button: text mid" value="000000ff"/>
+    <Option name="mixer strip name button: border start" value="b7b7d2ff"/>
+    <Option name="mixer strip name button: border end" value="000000ff"/>
+    <Option name="mixer strip name button: border start selected" value="8e8e9aff"/>
+    <Option name="mixer strip name button: border end selected" value="5b5b67ff"/>
+    <Option name="mixer strip name button: fill start" value="56565dff"/>
+    <Option name="mixer strip name button: fill end" value="484856ff"/>
+    <Option name="mixer strip name button: fill start active" value="4d4d4dff"/>
+    <Option name="mixer strip name button: fill end active" value="121212ff"/>
+    <Option name="mixer strip name button: fill start mid" value="57565dff"/>
+    <Option name="mixer strip name button: fill end mid" value="484856ff"/>
+    <Option name="mixer strip name button: led" value="4f3300ff"/>
+    <Option name="mixer strip name button: led active" value="ffa500ff"/>
+    <Option name="mixer strip name button: led mid" value="b87700ff"/>
+    <Option name="mixer strip name button: text" value="c7c7d8ff"/>
+    <Option name="mixer strip name button: text active" value="c8c8d9ff"/>
+    <Option name="mixer strip name button: text mid" value="000000ff"/>
     <Option name="transport clock: background" value="000000ff"/>
     <Option name="transport clock: text" value="6bb620ff"/>
     <Option name="transport clock: edited text" value="ffa500ff"/>
diff --git a/gtk2_ardour/ardour3_widget_list.rc b/gtk2_ardour/ardour3_widget_list.rc
index 0f55f148df..a3c128ee1d 100644
--- a/gtk2_ardour/ardour3_widget_list.rc
+++ b/gtk2_ardour/ardour3_widget_list.rc
@@ -35,16 +35,9 @@ widget "*TrackVisualButton*" style:highest "default_button"
 widget "*TrackRemoveButton*" style:highest "default_button"
 widget "*BaseButton" style:highest "default_button"
 widget "*TakeButtonLabel" style:highest "default_button"
-widget "*MixerWidthButton" style:highest "default_button"
-widget "*MixerHideButton" style:highest "default_button"
-widget "*MixerSendButton" style:highest "default_button"
-widget "*MixerSendButtonLabel" style:highest "default_button"
-widget "*MixerSendSwitch" style:highest "default_button"
-widget "*MixerInsertButton" style:highest "default_button"
-widget "*MixerInsertButtonLabel" style:highest "default_button"
-widget "*MixerInsertSwitch" style:highest "default_button"
-widget "*MixerIOButton" style:highest "very_small_button"
-widget "*MixerIOButtonLabel" style:highest "very_small_button"
+
+widget "*mixer strip button" style:highest "very_small_button"
+
 widget "*AddRouteDialogSpinner" style:highest "ardour_adjusters"
 widget "*AddRouteDialogRadioButton*" style:highest "preferences"
 widget "*OptionsNotebook" style:highest "preferences"
@@ -367,7 +360,6 @@ widget "*TimeInfoPunchTitle" style:highest "very_small_text"
 widget "*TimeInfoPunchButton" style:highest "very_small_text"
 widget "*RouteNameEditorEntry" style:highest "text_cell_entry"
 widget "*RegionNameEditorEntry" style:highest "text_cell_entry"
-widget "*MixerMidiInputEnableButton" style:highest "mouse_mode_button"
 widget "*EditorRouteGroupsAllGroupButton" style:highest "default_toggle_button"
 widget "*MidiSoundNotesButton" style:highest "default_toggle_button"
 widget "*MeasureLatencyButton" style:highest "default_toggle_button"
diff --git a/gtk2_ardour/canvas_vars.h b/gtk2_ardour/canvas_vars.h
index 7688f0c629..26d2c7585e 100644
--- a/gtk2_ardour/canvas_vars.h
+++ b/gtk2_ardour/canvas_vars.h
@@ -187,6 +187,9 @@ BUTTON_VARS(PunchButton, "punch button")
 BUTTON_VARS(MouseModeButton, "mouse mode button")
 BUTTON_VARS(ZoomButton, "zoom button")
 BUTTON_VARS(RouteButton, "route button")
+BUTTON_VARS(MixerStripButton, "mixer strip button")
+BUTTON_VARS(MixerStripNameButton, "mixer strip name button")
+BUTTON_VARS(MidiInputButton, "midi input button")
 
 #define CLOCK_VARS(root,name) \
 	CANVAS_VARIABLE(canvasvar_ ## root ## Background, name ": background") \
diff --git a/gtk2_ardour/mixer_strip.cc b/gtk2_ardour/mixer_strip.cc
index ac61ea9d29..3e829074c8 100644
--- a/gtk2_ardour/mixer_strip.cc
+++ b/gtk2_ardour/mixer_strip.cc
@@ -91,7 +91,7 @@ MixerStrip::MixerStrip (Mixer_UI& mx, Session* sess, bool in_mixer)
 	, top_button_table (1, 2)
 	, middle_button_table (1, 2)
 	, bottom_button_table (1, 2)
-	, meter_point_label (_("pre"))
+	, meter_point_button (_("pre"))
 	, midi_input_enable_button (0)
 	, _comment_button (_("Comments"))
 	, _visibility (X_("mixer-strip-visibility"))
@@ -119,7 +119,7 @@ MixerStrip::MixerStrip (Mixer_UI& mx, Session* sess, boost::shared_ptr<Route> rt
 	, button_table (3, 1)
 	, middle_button_table (1, 2)
 	, bottom_button_table (1, 2)
-	, meter_point_label (_("pre"))
+	, meter_point_button (_("pre"))
 	, midi_input_enable_button (0)
 	, _comment_button (_("Comments"))
 	, _visibility (X_("mixer-strip-visibility"))
@@ -145,43 +145,29 @@ MixerStrip::init ()
 	/* the length of this string determines the width of the mixer strip when it is set to `wide' */
 	longest_label = "longest label";
 
-	Gtk::Image* img;
-
-	img = manage (new Gtk::Image (::get_icon("strip_width")));
-	img->show ();
-
 	string t = _("Click to toggle the width of this mixer strip.");
 	if (_mixer_owned) {
 		t += string_compose (_("\n%1-click to toggle the width of all strips."), Keyboard::tertiary_modifier_name ());
 	}
 	
-	width_button.add (*img);
+	width_button.set_image (::get_icon("strip_width"));
 	ARDOUR_UI::instance()->set_tip (width_button, t);
 
-	img = manage (new Gtk::Image (::get_icon("hide")));
-	img->show ();
-
-	hide_button.add (*img);
+	hide_button.set_image(::get_icon("hide"));
 	ARDOUR_UI::instance()->set_tip (&hide_button, _("Hide this mixer strip"));
 
-	input_label.set_text (_("Input"));
+	input_button.set_text (_("Input"));
 	ARDOUR_UI::instance()->set_tip (&input_button, _("Button 1 to choose inputs from a port matrix, button 3 to select inputs from a menu"), "");
-	input_button.add (input_label);
-	input_button.set_name ("MixerIOButton");
-	input_label.set_name ("MixerIOButtonLabel");
+	input_button.set_name ("mixer strip button");
 	input_button_box.pack_start (input_button, true, true);
 
-	output_label.set_text (_("Output"));
+	output_button.set_text (_("Output"));
 	ARDOUR_UI::instance()->set_tip (&output_button, _("Button 1 to choose outputs from a port matrix, button 3 to select inputs from a menu"), "");
-	output_button.add (output_label);
-	output_button.set_name ("MixerIOButton");
-	output_label.set_name ("MixerIOButtonLabel");
+	output_button.set_name ("mixer strip button");
 	Gtkmm2ext::set_size_request_to_display_given_text (output_button, longest_label.c_str(), 4, 4);
 
 	ARDOUR_UI::instance()->set_tip (&meter_point_button, _("Select metering point"), "");
-	meter_point_button.add (meter_point_label);
-	meter_point_button.set_name ("MixerStripMeterPreButton");
-	meter_point_label.set_name ("MixerStripMeterPreButton");
+	meter_point_button.set_name ("mixer strip button");
 
 	/* TRANSLATORS: this string should be longest of the strings
 	   used to describe meter points. In english, it's "input".
@@ -262,29 +248,25 @@ MixerStrip::init ()
 	bottom_button_table.set_homogeneous (true);
 	bottom_button_table.attach (group_button, 0, 1, 0, 1);
 
-	name_button.add (name_label);
-	name_button.set_name ("MixerNameButton");
+	name_button.set_name ("mixer strip name button");
 	Gtkmm2ext::set_size_request_to_display_given_text (name_button, longest_label.c_str(), 2, 2);
 
-	name_label.set_name ("MixerNameButtonLabel");
 	ARDOUR_UI::instance()->set_tip (&group_button, _("Mix group"), "");
-	group_button.add (group_label);
-	group_button.set_name ("MixerGroupButton");
+	group_button.set_name ("mixer strip button");
 	Gtkmm2ext::set_size_request_to_display_given_text (group_button, "Group", 2, 2);
-	group_label.set_name ("MixerGroupButtonLabel");
 
-	_comment_button.set_name (X_("MixerCommentButton"));
-	_comment_button.signal_clicked().connect (sigc::mem_fun (*this, &MixerStrip::toggle_comment_editor));
+	_comment_button.set_name (X_("mixer strip button"));
+	_comment_button.signal_clicked.connect (sigc::mem_fun (*this, &MixerStrip::toggle_comment_editor));
 
 	global_vpacker.set_border_width (0);
 	global_vpacker.set_spacing (0);
 
-	width_button.set_name ("MixerWidthButton");
-	hide_button.set_name ("MixerHideButton");
-	top_event_box.set_name ("MixerTopEventBox");
+	width_button.set_name ("mixer strip button");
+	hide_button.set_name ("mixer strip button");
+	top_event_box.set_name ("mixer strip button");
 
 	width_button.signal_button_press_event().connect (sigc::mem_fun(*this, &MixerStrip::width_button_pressed), false);
-	hide_button.signal_clicked().connect (sigc::mem_fun(*this, &MixerStrip::hide_clicked));
+	hide_button.signal_clicked.connect (sigc::mem_fun(*this, &MixerStrip::hide_clicked));
 
 	width_hide_box.pack_start (width_button, false, true);
 	width_hide_box.pack_start (top_event_box, true, true);
@@ -456,10 +438,9 @@ MixerStrip::set_route (boost::shared_ptr<Route> rt)
 
 	if (is_midi_track()) {
 		if (midi_input_enable_button == 0) {
-			Image* img = manage (new Image (get_icon (X_("midi_socket_small"))));
-			midi_input_enable_button = manage (new StatefulToggleButton);
-			midi_input_enable_button->set_name ("MixerMidiInputEnableButton");
-			midi_input_enable_button->set_image (*img);
+			midi_input_enable_button = manage (new ArdourButton);
+			midi_input_enable_button->set_name ("midi input button");
+			midi_input_enable_button->set_image (::get_icon (X_("midi_socket_small")));
 			midi_input_enable_button->signal_button_press_event().connect (sigc::mem_fun (*this, &MixerStrip::input_active_button_press), false);
 			midi_input_enable_button->signal_button_release_event().connect (sigc::mem_fun (*this, &MixerStrip::input_active_button_release), false);
 			ARDOUR_UI::instance()->set_tip (midi_input_enable_button, _("Enable/Disable MIDI input"));
@@ -506,7 +487,7 @@ MixerStrip::set_route (boost::shared_ptr<Route> rt)
 		}
 	}
 
-	meter_point_label.set_text (meter_point_string (_route->meter_point()));
+	meter_point_button.set_text (meter_point_string (_route->meter_point()));
 
 	delete route_ops_menu;
 	route_ops_menu = 0;
@@ -561,20 +542,12 @@ MixerStrip::set_route (boost::shared_ptr<Route> rt)
 	middle_button_table.show();
 	bottom_button_table.show();
 	gpm.show_all ();
-	gain_unit_button.show();
-	gain_unit_label.show();
 	meter_point_button.show();
-	meter_point_label.show();
-	diskstream_button.show();
-	diskstream_label.show();
 	input_button_box.show_all();
 	output_button.show();
-	output_label.show();
-	name_label.show();
 	name_button.show();
 	_comment_button.show();
 	group_button.show();
-	group_label.show();
 
 	parameter_changed ("mixer-strip-visibility");
 
@@ -1231,9 +1204,9 @@ MixerStrip::update_io_button (boost::shared_ptr<ARDOUR::Route> route, Width widt
   	}
 
 	if (for_input) {
-		input_label.set_text (label_string);
+		input_button.set_text (label_string);
 	} else {
-		output_label.set_text (label_string);
+		output_button.set_text (label_string);
 	}
 }
 
@@ -1289,20 +1262,20 @@ MixerStrip::setup_comment_button ()
 	case Wide:
 		if (_route->comment().empty ()) {
 			_comment_button.unset_bg (STATE_NORMAL);
-			((Gtk::Label *) _comment_button.get_child ())->set_text (_("Comments"));
+			_comment_button.set_text (_("Comments"));
 		} else {
 			_comment_button.modify_bg (STATE_NORMAL, color ());
-			((Gtk::Label *) _comment_button.get_child ())->set_text (_("*Comments*"));
+			_comment_button.set_text (_("*Comments*"));
 		}
 		break;
 
 	case Narrow:
 		if (_route->comment().empty ()) {
 			_comment_button.unset_bg (STATE_NORMAL);
-			((Gtk::Label *) _comment_button.get_child ())->set_text (_("Cmt"));
+			_comment_button.set_text (_("Cmt"));
 		} else {
 			_comment_button.modify_bg (STATE_NORMAL, color ());
-			((Gtk::Label *) _comment_button.get_child ())->set_text (_("*Cmt*"));
+			_comment_button.set_text (_("*Cmt*"));
 		}
 		break;
 	}
@@ -1421,14 +1394,14 @@ MixerStrip::route_group_changed ()
 	RouteGroup *rg = _route->route_group();
 
 	if (rg) {
-		group_label.set_text (PBD::short_version (rg->name(), 5));
+		group_button.set_text (PBD::short_version (rg->name(), 5));
 	} else {
 		switch (_width) {
 		case Wide:
-			group_label.set_text (_("Grp"));
+			group_button.set_text (_("Grp"));
 			break;
 		case Narrow:
-			group_label.set_text (_("~G"));
+			group_button.set_text (_("~G"));
 			break;
 		}
 	}
@@ -1529,10 +1502,10 @@ MixerStrip::name_changed ()
 {
 	switch (_width) {
 	case Wide:
-		RouteUI::property_changed (PropertyChange (ARDOUR::Properties::name));
+		name_button.set_text (_route->name());
 		break;
 	case Narrow:
-		name_label.set_text (PBD::short_version (_route->name(), 5));
+		name_button.set_text (PBD::short_version (_route->name(), 5));
 		break;
 	}
 }
@@ -1716,7 +1689,7 @@ MixerStrip::meter_point_string (MeterPoint mp)
 void
 MixerStrip::meter_changed ()
 {
-	meter_point_label.set_text (meter_point_string (_route->meter_point()));
+	meter_point_button.set_text (meter_point_string (_route->meter_point()));
 	gpm.setup_meters ();
 	// reset peak when meter point changes
 	gpm.reset_peak_display();
diff --git a/gtk2_ardour/mixer_strip.h b/gtk2_ardour/mixer_strip.h
index 6ef282e697..09b5c150d0 100644
--- a/gtk2_ardour/mixer_strip.h
+++ b/gtk2_ardour/mixer_strip.h
@@ -149,8 +149,8 @@ class MixerStrip : public RouteUI, public Gtk::EventBox
 	Width _width;
 	void*  _width_owner;
 
-	Gtk::Button         hide_button;
-	Gtk::Button         width_button;
+	ArdourButton         hide_button;
+	ArdourButton         width_button;
 	Gtk::HBox           width_hide_box;
 	Gtk::VBox           whvbox;
 	Gtk::EventBox       top_event_box;
@@ -174,22 +174,15 @@ class MixerStrip : public RouteUI, public Gtk::EventBox
 	Gtk::Table middle_button_table;
 	Gtk::Table bottom_button_table;
 
-	Gtk::Button                  gain_unit_button;
-	Gtk::Label                   gain_unit_label;
-	Gtk::Button                  meter_point_button;
-	Gtk::Label                   meter_point_label;
+	ArdourButton                 meter_point_button;
 
 	void meter_changed ();
 
-	Gtk::Button diskstream_button;
-	Gtk::Label  diskstream_label;
+	ArdourButton input_button;
+	ArdourButton output_button;
 
-	Gtk::Button input_button;
-	Gtkmm2ext::StatefulToggleButton* midi_input_enable_button;
+	ArdourButton* midi_input_enable_button;
 	Gtk::HBox   input_button_box;
-	Gtk::Label  input_label;
-	Gtk::Button output_button;
-	Gtk::Label  output_label;
 
 	std::string longest_label;
 
@@ -200,11 +193,11 @@ class MixerStrip : public RouteUI, public Gtk::EventBox
 	gint    mark_update_safe ();
 	guint32 mode_switch_in_progress;
 
-	Gtk::Button   name_button;
+	ArdourButton   name_button;
 
 	ArdourWindow*  comment_window;
 	Gtk::TextView* comment_area;
-	Gtk::Button   _comment_button;
+	ArdourButton   _comment_button;
 
 	void comment_editor_done_editing ();
 	void setup_comment_editor ();
@@ -212,8 +205,7 @@ class MixerStrip : public RouteUI, public Gtk::EventBox
 	void toggle_comment_editor ();
 	void setup_comment_button ();
 
-	Gtk::Button   group_button;
-	Gtk::Label    group_label;
+	ArdourButton   group_button;
 	RouteGroupMenu *group_menu;
 
 	gint input_press (GdkEventButton *);
diff --git a/gtk2_ardour/route_ui.cc b/gtk2_ardour/route_ui.cc
index 50d5cec5d7..a0f9364687 100644
--- a/gtk2_ardour/route_ui.cc
+++ b/gtk2_ardour/route_ui.cc
@@ -1765,7 +1765,7 @@ void
 RouteUI::setup_invert_buttons ()
 {
 	/* remove old invert buttons */
-	for (list<BindableToggleButton*>::iterator i = _invert_buttons.begin(); i != _invert_buttons.end(); ++i) {
+	for (list<ArdourButton*>::iterator i = _invert_buttons.begin(); i != _invert_buttons.end(); ++i) {
 		_invert_button_box.remove (**i);
 	}
 
@@ -1780,15 +1780,15 @@ RouteUI::setup_invert_buttons ()
 	uint32_t const to_add = (N <= _max_invert_buttons) ? N : 1;
 
 	for (uint32_t i = 0; i < to_add; ++i) {
-		BindableToggleButton* b = manage (new BindableToggleButton);
-		b->signal_toggled().connect (sigc::bind (sigc::mem_fun (*this, &RouteUI::invert_toggled), i, b));
+		ArdourButton* b = manage (new ArdourButton);
+		b->StateChanged.connect (sigc::bind (sigc::mem_fun (*this, &RouteUI::invert_toggled), i, b));
 		b->signal_button_press_event().connect (sigc::mem_fun (*this, &RouteUI::invert_press));
 
-		b->set_name (X_("MixerInvertButton"));
+		b->set_name (X_("mixer strip button"));
 		if (to_add == 1) {
-			b->add (*manage (new Label (X_("Ø"))));
+			b->set_text (X_("Ø"));
 		} else {
-			b->add (*manage (new Label (string_compose (X_("Ø%1"), i + 1))));
+			b->set_text (string_compose (X_("Ø%1"), i + 1));
 		}
 
 		if (N <= 4) {
@@ -1817,7 +1817,7 @@ RouteUI::set_invert_button_state ()
 	}
 
 	int j = 0;
-	for (list<BindableToggleButton*>::iterator i = _invert_buttons.begin(); i != _invert_buttons.end(); ++i, ++j) {
+	for (list<ArdourButton*>::iterator i = _invert_buttons.begin(); i != _invert_buttons.end(); ++i, ++j) {
 		(*i)->set_active (_route->phase_invert (j));
 	}
 
@@ -1825,7 +1825,7 @@ RouteUI::set_invert_button_state ()
 }
 
 void
-RouteUI::invert_toggled (uint32_t i, BindableToggleButton* b)
+RouteUI::invert_toggled (uint32_t i, ArdourButton* b)
 {
 	if (_i_am_the_modifier) {
 		return;
@@ -1884,7 +1884,7 @@ RouteUI::invert_menu_toggled (uint32_t c)
 void
 RouteUI::set_invert_sensitive (bool yn)
 {
-        for (list<BindableToggleButton*>::iterator b = _invert_buttons.begin(); b != _invert_buttons.end(); ++b) {
+        for (list<ArdourButton*>::iterator b = _invert_buttons.begin(); b != _invert_buttons.end(); ++b) {
                 (*b)->set_sensitive (yn);
         }
 }
diff --git a/gtk2_ardour/route_ui.h b/gtk2_ardour/route_ui.h
index 1240de8716..9420e4aa59 100644
--- a/gtk2_ardour/route_ui.h
+++ b/gtk2_ardour/route_ui.h
@@ -271,12 +271,12 @@ class RouteUI : public virtual AxisView
 
 	void setup_invert_buttons ();
 	void set_invert_button_state ();
-	void invert_toggled (uint32_t, BindableToggleButton *);
+	void invert_toggled (uint32_t, ArdourButton *);
 	void invert_menu_toggled (uint32_t);
 	bool invert_press (GdkEventButton *);
 
 	int _i_am_the_modifier;
-	std::list<BindableToggleButton*> _invert_buttons;
+	std::list<ArdourButton*> _invert_buttons;
 	Gtk::Menu* _invert_menu;
 
 	static void set_showing_sends_to (boost::shared_ptr<ARDOUR::Route>);