From a8f58105a9b5eaeb4d93940a69f8dde8bc595233 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Sun, 13 Oct 2024 21:16:22 -0600
Subject: [PATCH] provide a class-level static PBD::Signal for Trigger (Slot)
 arming

---
 libs/ardour/ardour/triggerbox.h | 2 ++
 libs/ardour/triggerbox.cc       | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/libs/ardour/ardour/triggerbox.h b/libs/ardour/ardour/triggerbox.h
index 0b2cf048f8..d4ce8c624e 100644
--- a/libs/ardour/ardour/triggerbox.h
+++ b/libs/ardour/ardour/triggerbox.h
@@ -301,6 +301,7 @@ class LIBARDOUR_API Trigger : public PBD::Stateful {
 	virtual void disarm ();
 	bool armed() const { return _armed; }
 	PBD::Signal0<void> ArmChanged;
+	static PBD::Signal1<void,Trigger const *> TriggerArmChanged;
 
 	Temporal::BBT_Argument compute_start (Temporal::TempoMap::SharedPtr const &, samplepos_t start, samplepos_t end, Temporal::BBT_Offset const & q, samplepos_t& start_samples, bool& will_start);
 	virtual timepos_t compute_end (Temporal::TempoMap::SharedPtr const &, Temporal::BBT_Time const &, samplepos_t, Temporal::Beats &) = 0;
@@ -808,6 +809,7 @@ class LIBARDOUR_API TriggerBox : public Processor, public std::enable_shared_fro
 	void set_record_enabled (bool yn);
 	RecordState record_enabled() const { return _record_state; }
 	PBD::Signal0<void> RecEnableChanged;
+	static PBD::Signal0<void> TriggerRecEnableChanged;
 
 	void arm_from_another_thread (Trigger& slot, samplepos_t, uint32_t chans);
 	void disarm();
diff --git a/libs/ardour/triggerbox.cc b/libs/ardour/triggerbox.cc
index 07009ba208..13591c569f 100644
--- a/libs/ardour/triggerbox.cc
+++ b/libs/ardour/triggerbox.cc
@@ -210,6 +210,7 @@ FollowAction::to_string () const
 
 Trigger * const Trigger::MagicClearPointerValue = (Trigger*) 0xfeedface;
 PBD::Signal2<void,PropertyChange,Trigger*> Trigger::TriggerPropertyChange;
+PBD::Signal1<void,Trigger const *> Trigger::TriggerArmChanged;
 
 Trigger::Trigger (uint32_t n, TriggerBox& b)
 	: _launch_style (Properties::launch_style, OneShot)
@@ -293,6 +294,7 @@ Trigger::arm ()
 	_box.arm_from_another_thread (*this, _box.session().transport_sample(), 2);
 	_armed = true;
 	ArmChanged(); /* EMIT SIGNAL */
+	TriggerArmChanged (this);
 }
 
 void