From 53773ec3101b130f63941ebcbe65c1be88a1fccf Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Tue, 1 Apr 2025 15:52:58 +0200
Subject: [PATCH] Prepare RouteUI for RTA

---
 gtk2_ardour/route_ui.cc    | 34 +++++++++++++++++++++++++++++++++-
 gtk2_ardour/route_ui.h     |  3 +++
 gtk2_ardour/rta_manager.cc |  2 ++
 3 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/gtk2_ardour/route_ui.cc b/gtk2_ardour/route_ui.cc
index 010890526c..e82b90164e 100644
--- a/gtk2_ardour/route_ui.cc
+++ b/gtk2_ardour/route_ui.cc
@@ -83,6 +83,7 @@
 #include "rgb_macros.h"
 #include "route_time_axis.h"
 #include "route_ui.h"
+#include "rta_manager.h"
 #include "save_template_dialog.h"
 #include "timers.h"
 #include "ui_config.h"
@@ -214,6 +215,11 @@ RouteUI::init ()
 	solo_button->set_name ("solo button");
 	solo_button->set_no_show_all (true);
 
+	rta_button = manage (new ArdourButton);
+	rta_button->set_name ("rta button");
+	rta_button->set_act_on_release (true);
+	rta_button->set_text (_("RTA"));
+
 	rec_enable_button = manage (new ArdourButton);
 	rec_enable_button->set_name ("record enable button");
 	rec_enable_button->set_icon (ArdourIcon::RecButton);
@@ -256,6 +262,8 @@ RouteUI::init ()
 	rec_enable_button->signal_button_press_event().connect (sigc::mem_fun(*this, &RouteUI::rec_enable_press), false);
 	rec_enable_button->signal_button_release_event().connect (sigc::mem_fun(*this, &RouteUI::rec_enable_release), false);
 
+	rta_button->signal_clicked.connect (sigc::mem_fun(*this, &RouteUI::rta_clicked));
+
 	show_sends_button->signal_button_press_event().connect (sigc::mem_fun(*this, &RouteUI::show_sends_press), false);
 	show_sends_button->signal_button_release_event().connect (sigc::mem_fun(*this, &RouteUI::show_sends_release), false);
 
@@ -391,6 +399,8 @@ RouteUI::set_route (std::shared_ptr<Route> rp)
 	_route->solo_isolate_control()->Changed.connect (route_connections, invalidator (*this), std::bind (&RouteUI::update_solo_display, this), gui_context());
 	_route->phase_control()->Changed.connect (route_connections, invalidator (*this), std::bind (&RouteUI::update_polarity_display, this), gui_context());
 
+	_route->gui_changed.connect (route_connections, invalidator (*this), std::bind (&RouteUI::handle_gui_changes, this, _1), gui_context());
+
 	if (is_track()) {
 		track()->FreezeChange.connect (*this, invalidator (*this), std::bind (&RouteUI::map_frozen, this), gui_context());
 		track_mode_changed();
@@ -435,6 +445,7 @@ RouteUI::set_route (std::shared_ptr<Route> rp)
 
 	mute_button->set_can_focus (false);
 	solo_button->set_can_focus (false);
+	rta_button->set_can_focus (false);
 
 	mute_button->show();
 
@@ -454,6 +465,7 @@ RouteUI::set_route (std::shared_ptr<Route> rp)
 	update_mute_display ();
 	update_solo_display ();
 	update_solo_button ();
+	handle_gui_changes ("rta");
 
 	if (!UIConfiguration::instance().get_blink_rec_arm()) {
 		blink_rec_display(true); // set initial rec-en button state
@@ -1189,6 +1201,27 @@ RouteUI::send_blink (bool onoff)
 	}
 }
 
+void
+RouteUI::rta_clicked ()
+{
+	bool attached = RTAManager::instance ()->attached (_route);
+	if (attached) {
+		RTAManager::instance ()->remove (_route);
+	} else {
+		RTAManager::instance ()->attach (_route);
+		ARDOUR_UI::instance()->show_realtime_analyzer ();
+	}
+}
+
+void
+RouteUI::handle_gui_changes (std::string const& what)
+{
+	if (what == "rta") {
+		bool attached = RTAManager::instance ()->attached (_route);
+		rta_button->set_active_state (attached ? Gtkmm2ext::ExplicitActive : Gtkmm2ext::Off);
+	}
+}
+
 Gtkmm2ext::ActiveState
 RouteUI::solo_active_state (std::shared_ptr<Stripable> s)
 {
@@ -2820,4 +2853,3 @@ RouteUI::clear_time_domain (bool apply_to_selection)
 	}
 
 }
-
diff --git a/gtk2_ardour/route_ui.h b/gtk2_ardour/route_ui.h
index 323d4094f0..9e863b8962 100644
--- a/gtk2_ardour/route_ui.h
+++ b/gtk2_ardour/route_ui.h
@@ -147,6 +147,7 @@ public:
 	bool show_sends_release (GdkEventButton*);
 	bool solo_isolate_button_release (GdkEventButton*);
 	bool solo_safe_button_release (GdkEventButton*);
+	void rta_clicked ();
 
 	bool monitor_release (GdkEventButton*, ARDOUR::MonitorChoice);
 	bool monitor_input_press (GdkEventButton*);
@@ -197,6 +198,7 @@ protected:
 	ArdourWidgets::ArdourButton* show_sends_button; /* busses */
 	ArdourWidgets::ArdourButton* monitor_input_button;
 	ArdourWidgets::ArdourButton* monitor_disk_button;
+	ArdourWidgets::ArdourButton* rta_button;
 
 	ArdourWidgets::ArdourButton* solo_safe_led;
 	ArdourWidgets::ArdourButton* solo_isolated_led;
@@ -287,6 +289,7 @@ private:
 	void session_rec_enable_changed ();
 	void denormal_protection_changed ();
 	void muting_change ();
+	void handle_gui_changes (std::string const&);
 
 	void step_edit_changed (bool);
 	void toggle_rec_safe ();
diff --git a/gtk2_ardour/rta_manager.cc b/gtk2_ardour/rta_manager.cc
index aebc8d6821..70b86483e7 100644
--- a/gtk2_ardour/rta_manager.cc
+++ b/gtk2_ardour/rta_manager.cc
@@ -180,6 +180,7 @@ RTAManager::attach (std::shared_ptr<ARDOUR::Route> route)
 	_rta.back ().set_rta_warp (_warp);
 	_rta.back ().delivery ()->set_analysis_active (_active);
 
+	route->gui_changed ("rta", this); /* EMIT SIGNAL */
 	route->DropReferences.connect (*this, invalidator (*this), std::bind (&RTAManager::route_removed, this, std::weak_ptr<Route> (route)), gui_context ());
 }
 
@@ -187,6 +188,7 @@ void
 RTAManager::remove (std::shared_ptr<ARDOUR::Route> route)
 {
 	_rta.remove_if ([route] (RTAManager::RTA const& r) { return r.route () == route; });
+	route->gui_changed ("rta", this); /* EMIT SIGNAL */
 }
 
 bool