From 91ba76fb0acd850452d39a9041ed412eb5effbb1 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Mon, 12 Sep 2022 20:05:07 +0200
Subject: [PATCH] Add plugin presets to processor-box context menu

---
 gtk2_ardour/ardour.menus.in  |  1 +
 gtk2_ardour/processor_box.cc | 53 +++++++++++++++++++++++++++++++++++-
 gtk2_ardour/processor_box.h  |  2 ++
 3 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/gtk2_ardour/ardour.menus.in b/gtk2_ardour/ardour.menus.in
index 8644c069fa..95ec675c33 100644
--- a/gtk2_ardour/ardour.menus.in
+++ b/gtk2_ardour/ardour.menus.in
@@ -787,6 +787,7 @@
     <separator/>
     <menuitem action='controls'/>
     <menuitem action='send_options'/>
+    <menuitem action='presets'/>
     <separator/>
 #ifndef MIXBUS
     <menu action="disk-io-menu">
diff --git a/gtk2_ardour/processor_box.cc b/gtk2_ardour/processor_box.cc
index 71fe4a3370..d2cdc64840 100644
--- a/gtk2_ardour/processor_box.cc
+++ b/gtk2_ardour/processor_box.cc
@@ -821,6 +821,40 @@ ProcessorEntry::build_controls_menu ()
 	return menu;
 }
 
+void
+ProcessorEntry::plugin_preset_selected (ARDOUR::Plugin::PresetRecord preset)
+{
+	boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (_processor);
+	assert (pi);
+	if (!preset.label.empty()) {
+		_pi->load_preset (preset);
+	} else {
+		pi->plugin->clear_preset();
+	}
+}
+
+Menu*
+ProcessorEntry::build_presets_menu ()
+{
+	using namespace Menu_Helpers;
+
+	boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (_processor);
+	if (!pi) {
+		return NULL;
+	}
+
+	vector<ARDOUR::Plugin::PresetRecord> presets = pi->plugin()->get_presets();
+
+	Menu* menu = manage (new Menu);
+	MenuList& items = menu->items ();
+
+	for (auto const& p : presets) {
+		items.push_back (MenuElem (p.label, sigc::bind (sigc::mem_fun (*this, &ProcessorEntry::plugin_preset_selected), p)));
+	}
+
+	return menu;
+}
+
 void
 ProcessorEntry::toggle_inline_display_visibility ()
 {
@@ -2328,7 +2362,6 @@ ProcessorBox::show_processor_menu (int arg)
 		}
 	}
 
-
 	Gtk::MenuItem* send_menu_item = dynamic_cast<Gtk::MenuItem*>(ActionManager::get_widget("/ProcessorMenu/send_options"));
 	if (send_menu_item) {
 		if (single_selection && !_route->is_monitor()) {
@@ -2346,6 +2379,23 @@ ProcessorBox::show_processor_menu (int arg)
 		}
 	}
 
+	Gtk::MenuItem* presets_menu_item = dynamic_cast<Gtk::MenuItem*>(ActionManager::get_widget("/ProcessorMenu/presets"));
+	if (presets_menu_item) {
+		if (single_selection) {
+			Menu* m = single_selection->build_presets_menu ();
+			if (m && !m->items().empty()) {
+				presets_menu_item->set_submenu (*m);
+				presets_menu_item->set_sensitive (true);
+			} else {
+				delete m;
+				gtk_menu_item_set_submenu (presets_menu_item->gobj(), 0);
+				presets_menu_item->set_sensitive (false);
+			}
+		} else {
+			presets_menu_item->set_sensitive (false);
+		}
+	}
+
 	/* Sensitise actions as approprioate */
 
 	const bool sensitive = !processor_display.selection().empty() && ! stub_processor_selected ();
@@ -3981,6 +4031,7 @@ ProcessorBox::register_actions ()
 
 	ActionManager::register_action (processor_box_actions, X_("controls"), _("Controls"));
 	ActionManager::register_action (processor_box_actions, X_("send_options"), _("Send Options"));
+	ActionManager::register_action (processor_box_actions, X_("presets"), _("Presets"));
 
 	ActionManager::register_action (processor_box_actions, X_("clear"), _("Clear (all)"),
 			sigc::ptr_fun (ProcessorBox::rb_clear));
diff --git a/gtk2_ardour/processor_box.h b/gtk2_ardour/processor_box.h
index 8dadd99e75..ebbc2556d3 100644
--- a/gtk2_ardour/processor_box.h
+++ b/gtk2_ardour/processor_box.h
@@ -174,6 +174,7 @@ public:
 	std::string state_id () const;
 	Gtk::Menu* build_controls_menu ();
 	Gtk::Menu* build_send_options_menu ();
+	Gtk::Menu* build_presets_menu ();
 
 protected:
 	ArdourWidgets::ArdourButton _button;
@@ -256,6 +257,7 @@ private:
 
 	void toggle_panner_link ();
 	void toggle_allow_feedback ();
+	void plugin_preset_selected (ARDOUR::Plugin::PresetRecord);
 
 	class PluginInlineDisplay : public PluginDisplay {
 	public: