Allow to send immediate PC messages without closing the dialog.

Perhaps every change should trigger a PC (without "Apply") button?!

gtk2_ardour/midi_time_axis.cc

@@ -122,6 +122,7 @@ MidiTimeAxisView::MidiTimeAxisView (PublicEditor& ed, Session* sess, ArdourCanva
 	, controller_menu (0)
 	, poly_pressure_menu (0)
 	, _step_editor (0)
+	, _patch_change_dialog (0)
 {
 	_midnam_model_selector.disable_scrolling();
 	_midnam_custom_device_mode_selector.disable_scrolling();
@@ -345,6 +346,9 @@ MidiTimeAxisView::~MidiTimeAxisView ()
 
 	delete controller_menu;
 	delete _step_editor;
+
+	delete  _patch_change_dialog;
+	_patch_change_dialog = 0;
 }
 
 void
@@ -1078,19 +1082,14 @@ MidiTimeAxisView::build_color_mode_menu()
 }
 
 void
-MidiTimeAxisView::send_patch_change ()
+MidiTimeAxisView::immediate_patch_chnage_response (int response)
 {
-	if (!_route) {
+	if (response != RESPONSE_ACCEPT || !_route) {
+		delete  _patch_change_dialog;
+		_patch_change_dialog = 0;
 		return;
 	}
-
-	Evoral::PatchChange<Evoral::Beats> empty (Evoral::Beats(), 0, 0, 0);
-	PatchChangeDialog d (0, 0, empty, _route->instrument_info(), Gtk::Stock::OK);
-
-	if (d.run() == RESPONSE_CANCEL) {
-		return;
-	}
-	Evoral::PatchChange<Evoral::Beats> p (d.patch ());
+	Evoral::PatchChange<Evoral::Beats> p (_patch_change_dialog->patch ());
 
 	uint8_t chn = p.channel();
 
@@ -1099,12 +1098,32 @@ MidiTimeAxisView::send_patch_change ()
 	boost::shared_ptr<AutomationControl> program = _route->automation_control(Evoral::Parameter (MidiPgmChangeAutomation, chn), true);
 
 	if (!bank_msb || ! bank_lsb || !program) {
+		_patch_change_dialog->show ();
 		return;
 	}
 
 	bank_msb->set_value (p.bank_msb (), Controllable::NoGroup);
 	bank_lsb->set_value (p.bank_lsb (), Controllable::NoGroup);
 	program->set_value  (p.program () , Controllable::NoGroup);
+	_patch_change_dialog->show ();
+}
+
+void
+MidiTimeAxisView::send_patch_change ()
+{
+	if (!_route) {
+		return;
+	}
+	if (_patch_change_dialog) {
+		_patch_change_dialog->present ();
+		return;
+	}
+
+	Evoral::PatchChange<Evoral::Beats> empty (Evoral::Beats(), 0, 0, 0);
+	PatchChangeDialog* d = new PatchChangeDialog (0, 0, empty, _route->instrument_info(), Gtk::Stock::APPLY, false, false);
+	d->signal_response().connect (sigc::mem_fun (*this, &MidiTimeAxisView::immediate_patch_chnage_response));
+	_patch_change_dialog = d;
+	_patch_change_dialog->present ();
 }
 
 void

gtk2_ardour/midi_time_axis.h

@@ -67,6 +67,7 @@ class PianoRollHeader;
 class StepEntry;
 class StepEditor;
 class MidiChannelSelectorWindow;
+class PatchChangeDialog;
 
 #define NO_MIDI_NOTE 0xff
 
@@ -196,6 +197,10 @@ private:
 	ParameterMenuMap _controller_menu_map;
 
 	StepEditor* _step_editor;
+
+	void immediate_patch_chnage_response (int response);
+	PatchChangeDialog* _patch_change_dialog;
+
 };
 
 #endif /* __ardour_midi_time_axis_h__ */

gtk2_ardour/patch_change_dialog.cc

@@ -46,8 +46,9 @@ PatchChangeDialog::PatchChangeDialog (
 	Evoral::PatchChange<Evoral::Beats> const & patch,
 	ARDOUR::InstrumentInfo&                    info,
 	const Gtk::BuiltinStockID&                 ok,
-	bool                                       allow_delete)
-	: ArdourDialog (_("Patch Change"), true)
+	bool                                       allow_delete,
+	bool                                       modal)
+	: ArdourDialog (_("Patch Change"), modal)
 	, _time_converter (tc)
 	, _info (info)
 	, _time (X_("patchchangetime"), true, "", true, false)
@@ -56,6 +57,7 @@ PatchChangeDialog::PatchChangeDialog (
 	, _bank_msb (*manage (new Adjustment (0, 0, 127, 1, 16)))
 	, _bank_lsb (*manage (new Adjustment (0, 0, 127, 1, 16)))
 	, _ignore_signals (false)
+	, _keep_open (!modal)
 {
 	Table* t = manage (new Table (4, 2));
 	Label* l;
@@ -122,7 +124,9 @@ PatchChangeDialog::PatchChangeDialog (
 
 	get_vbox()->add (*t);
 
-	add_button (Stock::CANCEL, RESPONSE_CANCEL);
+	if (modal) {
+		add_button (Stock::CANCEL, RESPONSE_CANCEL);
+	}
 	add_button (ok, RESPONSE_ACCEPT);
 	if (allow_delete) {
 		add_button (Gtk::StockID(GTK_STOCK_DELETE), RESPONSE_REJECT);
@@ -139,6 +143,16 @@ PatchChangeDialog::PatchChangeDialog (
 	show_all ();
 }
 
+void
+PatchChangeDialog::on_response (int response_id)
+{
+	if (_keep_open) {
+		Gtk::Dialog::on_response (response_id);
+	} else {
+		ArdourDialog::on_response (response_id);
+	}
+}
+
 int
 PatchChangeDialog::get_14bit_bank () const
 {

gtk2_ardour/patch_change_dialog.h

@@ -46,11 +46,15 @@ public:
 		Evoral::PatchChange<Evoral::Beats> const &,
 		ARDOUR::InstrumentInfo&,
 		const Gtk::BuiltinStockID &,
-		bool allow_delete = false
+		bool allow_delete = false,
+		bool modal = true
 		);
 
 	Evoral::PatchChange<Evoral::Beats> patch () const;
 
+protected:
+	void on_response (int);
+
 private:
 	void fill_bank_combo ();
 	void set_active_bank_combo ();
@@ -76,6 +80,7 @@ private:
 
 	boost::shared_ptr<MIDI::Name::PatchBank> _current_patch_bank;
 	bool _ignore_signals;
+	bool _keep_open;
 
 	void instrument_info_changed ();
 	PBD::ScopedConnection _info_changed_connection;