From 6e16f69c2645f54670dfb3af946e21a89fc8dd09 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Mon, 3 Nov 2014 17:29:11 -0500
Subject: Add menu to set frequency controls in beats, and half or double
 current value.

Test with e.g. fomp:cs_phaser1_lfo LFO frequency.
---
 gtk2_ardour/automation_controller.cc | 41 +++++++++++++++++++++++++++++++++++-
 gtk2_ardour/automation_controller.h  |  2 ++
 2 files changed, 42 insertions(+), 1 deletion(-)

(limited to 'gtk2_ardour')

diff --git a/gtk2_ardour/automation_controller.cc b/gtk2_ardour/automation_controller.cc
index 4fa7f67ccd..20ef5ab21c 100644
--- a/gtk2_ardour/automation_controller.cc
+++ b/gtk2_ardour/automation_controller.cc
@@ -21,11 +21,13 @@
 #include <iomanip>
 #include <cmath>
 
+#include "pbd/compose.h"
 #include "pbd/error.h"
 
 #include "ardour/automatable.h"
 #include "ardour/automation_control.h"
 #include "ardour/session.h"
+#include "ardour/tempo.h"
 
 #include "ardour_ui.h"
 #include "automation_controller.h"
@@ -158,19 +160,56 @@ AutomationController::run_note_select_dialog()
 	delete dialog;
 }
 
+void
+AutomationController::set_freq_beats(double beats)
+{
+	const ARDOUR::Session& session = _controllable->session();
+	const ARDOUR::Tempo&   tempo   = session.tempo_map().tempo_at(0);
+	const double           bpm     = tempo.beats_per_minute();
+	const double           bps     = bpm / 60.0;
+	_controllable->set_value(bps / beats);
+}
+
+void
+AutomationController::set_ratio(double ratio)
+{
+	_controllable->set_value(_controllable->get_value() * ratio);
+}
+
 bool
 AutomationController::on_button_release(GdkEventButton* ev)
 {
 	using namespace Gtk::Menu_Helpers;
 
-	if (ev->button == 3 && _controllable->desc().unit == ARDOUR::ParameterDescriptor::MIDI_NOTE) {
+	if (ev->button != 3) {
+		return false;
+	}
+
+	if (_controllable->desc().unit == ARDOUR::ParameterDescriptor::MIDI_NOTE) {
 		Gtk::Menu* menu  = manage(new Menu());
 		MenuList&  items = menu->items();
 		items.push_back(MenuElem(_("Select Note..."),
 		                         sigc::mem_fun(*this, &AutomationController::run_note_select_dialog)));
 		menu->popup(1, ev->time);
 		return true;
+	} else if (_controllable->desc().unit == ARDOUR::ParameterDescriptor::HZ) {
+		Gtk::Menu* menu  = manage(new Menu());
+		MenuList&  items = menu->items();
+		items.push_back(MenuElem(_("Halve"),
+		                         sigc::bind(sigc::mem_fun(*this, &AutomationController::set_ratio),
+		                                    0.5)));
+		items.push_back(MenuElem(_("Double"),
+		                         sigc::bind(sigc::mem_fun(*this, &AutomationController::set_ratio),
+		                                    2.0)));
+		for (double beats = 1.0; beats <= 16; ++beats) {
+			items.push_back(MenuElem(string_compose(_("Set to %1 beat(s)"), (int)beats),
+			                         sigc::bind(sigc::mem_fun(*this, &AutomationController::set_freq_beats),
+			                                    beats)));
+		}
+		menu->popup(1, ev->time);
+		return true;
 	}
+
 	return false;
 }
 
diff --git a/gtk2_ardour/automation_controller.h b/gtk2_ardour/automation_controller.h
index fcc3904e49..6350c5b67e 100644
--- a/gtk2_ardour/automation_controller.h
+++ b/gtk2_ardour/automation_controller.h
@@ -72,6 +72,8 @@ private:
 	void end_touch();
 
 	void run_note_select_dialog();
+	void set_ratio(double ratio);
+	void set_freq_beats(double beats);
 	bool on_button_release(GdkEventButton* ev);
 
 	void value_changed();
-- 
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