From 6dadac73ab08b119dd9ddf62a8ca07d98e2e72df Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Mon, 20 Mar 2023 23:14:06 +0100
Subject: [PATCH] Add context-menu options to disconnect plugin-pins

---
 gtk2_ardour/plugin_pin_dialog.cc | 23 ++++++++++++++++++++++-
 gtk2_ardour/plugin_pin_dialog.h  |  8 ++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/gtk2_ardour/plugin_pin_dialog.cc b/gtk2_ardour/plugin_pin_dialog.cc
index 1a00fd305f..736a6d943f 100644
--- a/gtk2_ardour/plugin_pin_dialog.cc
+++ b/gtk2_ardour/plugin_pin_dialog.cc
@@ -114,7 +114,11 @@ PluginPinWidget::PluginPinWidget (boost::shared_ptr<ARDOUR::PluginInsert> pi)
 	Menu_Helpers::MenuList& citems = reset_menu.items ();
 	reset_menu.set_name ("ArdourContextMenu");
 	citems.clear ();
-	citems.push_back (Menu_Helpers::MenuElem (_("Reset"), sigc::mem_fun (*this, &PluginPinWidget::reset_mapping)));
+	citems.push_back (Menu_Helpers::MenuElem (_("Reset to default"), sigc::mem_fun (*this, &PluginPinWidget::reset_mapping)));
+	citems.push_back (Menu_Helpers::SeparatorElem ());
+	citems.push_back (Menu_Helpers::MenuElem (_("Disconnect Inputs"), sigc::bind (sigc::mem_fun (*this, &PluginPinWidget::clear_mapping), DisconnectIn)));
+	citems.push_back (Menu_Helpers::MenuElem (_("Disconnect Outputs"), sigc::bind (sigc::mem_fun (*this, &PluginPinWidget::clear_mapping), DisconnectOut)));
+	citems.push_back (Menu_Helpers::MenuElem (_("Disconnect All"), sigc::bind (sigc::mem_fun (*this, &PluginPinWidget::clear_mapping), DisconnectAll)));
 
 	_pm_size_group  = SizeGroup::create (SIZE_GROUP_BOTH);
 	_add_plugin.set_tweaks (ArdourButton::Square);
@@ -1646,6 +1650,23 @@ PluginPinWidget::reset_mapping ()
 	_pi->reset_map ();
 }
 
+void
+PluginPinWidget::clear_mapping (ClearMode m)
+{
+	ChanMapping map;
+	for (uint32_t n = 0; n < _n_plugins; ++n) {
+		if (m & DisconnectIn) {
+			_pi->set_input_map (n, map);
+		}
+		if (m & DisconnectOut) {
+			_pi->set_output_map (n, map);
+		}
+	}
+	if (m == DisconnectAll) {
+		_pi->set_thru_map (map);
+	}
+}
+
 void
 PluginPinWidget::select_output_preset (uint32_t n_audio)
 {
diff --git a/gtk2_ardour/plugin_pin_dialog.h b/gtk2_ardour/plugin_pin_dialog.h
index bee3533262..b2310067ca 100644
--- a/gtk2_ardour/plugin_pin_dialog.h
+++ b/gtk2_ardour/plugin_pin_dialog.h
@@ -57,6 +57,13 @@ private:
 		Output
 	} CtrlType;
 
+	typedef enum {
+		DisconnectIn = 1,
+		DisconnectOut = 2,
+		DisconnectAll = 3, // includes thru
+	} ClearMode;
+
+
 	struct _CtrlElem {
 		_CtrlElem (CtrlType c, ARDOUR::DataType d, uint32_t i, uint32_t p, uint32_t b, bool s)
 			: ct (c), dt (d), id (i), ip (p), bn (b), sc (s) {}
@@ -153,6 +160,7 @@ private:
 	static std::string port_label (const std::string&, bool);
 
 	void reset_mapping ();
+	void clear_mapping (ClearMode);
 	void reset_configuration ();
 	void toggle_sidechain ();
 	void connect_sidechain ();