From ac814d32d13d831c197619165da173bf0c93e6e5 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Tue, 6 Dec 2016 18:48:36 +0100
Subject: [PATCH] Allow to send Immediate Patch Changes

---
 gtk2_ardour/midi_time_axis.cc | 102 ++++++++++++++++++++++++++++++++++
 gtk2_ardour/midi_time_axis.h  |   3 +
 2 files changed, 105 insertions(+)

diff --git a/gtk2_ardour/midi_time_axis.cc b/gtk2_ardour/midi_time_axis.cc
index 7b2ddeebc8..97d7ae1727 100644
--- a/gtk2_ardour/midi_time_axis.cc
+++ b/gtk2_ardour/midi_time_axis.cc
@@ -598,6 +598,8 @@ MidiTimeAxisView::append_extra_display_menu_items ()
 	items.push_back (MenuElem (_("Channel Selector"),
 				   sigc::mem_fun(*this, &MidiTimeAxisView::toggle_channel_selector)));
 
+	items.push_back (MenuElem (_("Select Patch"), *build_patch_menu()));
+
 	color_mode_menu = build_color_mode_menu();
 	if (color_mode_menu) {
 		items.push_back (MenuElem (_("Color Mode"), *color_mode_menu));
@@ -1113,6 +1115,106 @@ MidiTimeAxisView::build_color_mode_menu()
 	return mode_menu;
 }
 
+Gtk::Menu*
+MidiTimeAxisView::build_patch_menu()
+{
+	using namespace MIDI::Name;
+	using namespace Menu_Helpers;
+
+	boost::shared_ptr<MasterDeviceNames> device_names = get_device_names();
+	const std::string device_mode = gui_property (X_("midnam-custom-device-mode"));
+
+	Menu* pc_menu = manage (new Menu);
+	MenuList& pc_items = pc_menu->items();
+
+	for (uint32_t chn = 0; chn < 16; ++chn) {
+		boost::shared_ptr<ChannelNameSet> channel_name_set = device_names->channel_name_set_by_channel (device_mode, chn);
+		// see also PatchChange::initialize_popup_menus
+		if (!channel_name_set) {
+			continue;
+		}
+		Gtk::Menu& chan_menu = *manage(new Gtk::Menu());
+
+		const ChannelNameSet::PatchBanks& patch_banks = channel_name_set->patch_banks();
+		if (patch_banks.size() > 1) {
+
+			for (ChannelNameSet::PatchBanks::const_iterator bank = patch_banks.begin();
+					bank != patch_banks.end();
+					++bank) {
+				Glib::RefPtr<Glib::Regex> underscores = Glib::Regex::create("_");
+				std::string replacement(" ");
+
+				Gtk::Menu& patch_bank_menu = *manage(new Gtk::Menu());
+
+				const PatchNameList& patches = (*bank)->patch_name_list();
+				Gtk::Menu::MenuList& patch_menus = patch_bank_menu.items();
+
+				for (PatchNameList::const_iterator patch = patches.begin();
+						patch != patches.end();
+						++patch) {
+					std::string name = underscores->replace((*patch)->name().c_str(), -1, 0, replacement);
+
+					patch_menus.push_back(
+							Gtk::Menu_Helpers::MenuElem(
+								name,
+								sigc::bind(
+									sigc::mem_fun(*this, &MidiTimeAxisView::on_patch_menu_selected),
+									chn, (*patch)->patch_primary_key())) );
+				}
+
+
+				std::string name = underscores->replace((*bank)->name().c_str(), -1, 0, replacement);
+
+				chan_menu.items().push_back(
+						Gtk::Menu_Helpers::MenuElem(
+							name,
+							patch_bank_menu) );
+			}
+		} else {
+			/* only one patch bank, so make it the initial menu */
+
+			const PatchNameList& patches = patch_banks.front()->patch_name_list();
+
+			for (PatchNameList::const_iterator patch = patches.begin();
+					patch != patches.end();
+					++patch) {
+				std::string name = (*patch)->name();
+				boost::replace_all (name, "_", " ");
+
+				chan_menu.items().push_back (
+						Gtk::Menu_Helpers::MenuElem (
+							name,
+							sigc::bind (sigc::mem_fun(*this, &MidiTimeAxisView::on_patch_menu_selected),
+								chn, (*patch)->patch_primary_key())));
+			}
+		}
+
+		pc_items.push_back(
+				Gtk::Menu_Helpers::MenuElem(
+					string_compose (_("Channel %1"), chn + 1),
+					chan_menu));
+	}
+	return pc_menu;
+}
+
+void
+MidiTimeAxisView::on_patch_menu_selected (int chn, const MIDI::Name::PatchPrimaryKey& key)
+{
+	if (!_route) {
+		return;
+	}
+	boost::shared_ptr<AutomationControl> bank_msb = _route->automation_control(Evoral::Parameter (MidiCCAutomation, chn, MIDI_CTL_MSB_BANK), true);
+	boost::shared_ptr<AutomationControl> bank_lsb = _route->automation_control(Evoral::Parameter (MidiCCAutomation, chn, MIDI_CTL_LSB_BANK), true);
+	boost::shared_ptr<AutomationControl> program = _route->automation_control(Evoral::Parameter (MidiPgmChangeAutomation, chn), true);
+
+	if (!bank_msb || ! bank_lsb || !program) {
+		return;
+	}
+	bank_msb->set_value ((key.bank() >> 7) & 0x7f, Controllable::NoGroup);
+	bank_lsb->set_value (key.bank() & 0x7f, Controllable::NoGroup);
+	program->set_value (key.program(), Controllable::NoGroup);
+}
+
 void
 MidiTimeAxisView::set_note_mode(NoteMode mode, bool apply_to_selection)
 {
diff --git a/gtk2_ardour/midi_time_axis.h b/gtk2_ardour/midi_time_axis.h
index 9f3ef78e5b..ffbbeb62a2 100644
--- a/gtk2_ardour/midi_time_axis.h
+++ b/gtk2_ardour/midi_time_axis.h
@@ -45,6 +45,7 @@ namespace MIDI {
 namespace Name {
 class MasterDeviceNames;
 class CustomDeviceMode;
+struct PatchPrimaryKey;
 }
 }
 
@@ -134,10 +135,12 @@ private:
 	void build_automation_action_menu (bool);
 	Gtk::Menu* build_note_mode_menu();
 	Gtk::Menu* build_color_mode_menu();
+	Gtk::Menu* build_patch_menu();
 
 	void set_note_mode (ARDOUR::NoteMode mode, bool apply_to_selection = false);
 	void set_color_mode (ARDOUR::ColorMode, bool force = false, bool redisplay = true, bool apply_to_selection = false);
 	void set_note_range (MidiStreamView::VisibleNoteRange range, bool apply_to_selection = false);
+	void on_patch_menu_selected (int chn, const MIDI::Name::PatchPrimaryKey& key);
 
 	void route_active_changed ();
 	void note_range_changed ();