Blink disk+dsp gauges on major errors ( disk out of space or xrun-while-recording )

gtk2_ardour/ardour_gauge.cc

@@ -61,6 +61,13 @@ ArdourGauge::update (std::string const& txt)
 	update ();
 }
 
+void
+ArdourGauge::blink (bool onoff)
+{
+	_blink = onoff;
+	queue_draw ();
+}
+
 void
 ArdourGauge::render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*)
 {
@@ -75,7 +82,7 @@ ArdourGauge::render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t
 	Gtkmm2ext::set_source_rgba (cr, base);
 	cairo_fill (cr);
 
-	if (alert ()) {
+	if (alert () && _blink) {
 		Gtkmm2ext::rounded_rectangle (cr, 1, 1, width - 2, height - 2, PADDING + 1);
 		cairo_set_source_rgba (cr, 0.5, 0, 0, 1.0);
 		cairo_fill (cr);

gtk2_ardour/ardour_gauge.h

@@ -29,6 +29,8 @@ public:
 	ArdourGauge (std::string const& max_text = "00.0%");
 	virtual ~ArdourGauge ();
 
+	void blink (bool onoff);
+
 protected:
 
 	enum Status {
@@ -54,6 +56,8 @@ private:
 	void render (Cairo::RefPtr<Cairo::Context> const&, cairo_rectangle_t*);
 
 	Glib::RefPtr<Pango::Layout> _layout;
+
+	bool _blink;
 };
 
 #endif

gtk2_ardour/ardour_ui.cc

@@ -2640,6 +2640,9 @@ ARDOUR_UI::blink_handler (bool blink_on)
 	solo_blink (blink_on);
 	audition_blink (blink_on);
 	feedback_blink (blink_on);
+
+	dsp_load_indicator.blink(blink_on);
+	disk_space_indicator.blink(blink_on);
 }
 
 void
@@ -4927,6 +4930,10 @@ ARDOUR_UI::xrun_handler (samplepos_t where)
 
 	ENSURE_GUI_THREAD (*this, &ARDOUR_UI::xrun_handler, where)
 
+	if (_session && _session->actively_recording()) {
+		dsp_load_indicator.set_xrun_while_recording();
+	}
+
 	if (_session && Config->get_create_xrun_marker() && _session->actively_recording()) {
 		create_xrun_marker(where);
 	}

gtk2_ardour/dsp_load_indicator.cc

@@ -19,6 +19,8 @@
 #include "ardour_ui.h"
 #include "dsp_load_indicator.h"
 
+#include "ardour/audioengine.h"
+
 #include "pbd/i18n.h"
 
 #define PADDING 3
@@ -27,6 +29,7 @@ DspLoadIndicator::DspLoadIndicator ()
 	: ArdourGauge ("00.0%")
 	, _dsp_load (0)
 	, _xrun_count (0)
+	, _xrun_while_recording (false)
 {
 }
 
@@ -61,7 +64,13 @@ DspLoadIndicator::level () const {
 bool
 DspLoadIndicator::alert () const
 {
-	return _xrun_count > 0;
+	bool ret = false;
+	
+	//xrun while recording
+	ret |= _xrun_while_recording;
+
+	//engine OFF
+	ret |= !ARDOUR::AudioEngine::instance()->running();
 }
 
 ArdourGauge::Status
@@ -80,6 +89,8 @@ std::string
 DspLoadIndicator::tooltip_text ()
 {
 	char buf[64];
+
+	//xruns
 	if (_xrun_count == UINT_MAX) {
 		snprintf (buf, sizeof (buf), _("DSP: %.1f%% X: ?"), _dsp_load);
 	} else if (_xrun_count > 9999) {
@@ -87,6 +98,7 @@ DspLoadIndicator::tooltip_text ()
 	} else {
 		snprintf (buf, sizeof (buf), _("DSP: %.1f%% X: %u"), _dsp_load, _xrun_count);
 	}
+
 	return buf;
 }
 
@@ -96,6 +108,7 @@ DspLoadIndicator::on_button_release_event (GdkEventButton *ev)
 	ARDOUR::Session* s = ARDOUR_UI::instance ()->the_session ();
 	if (s) {
 		s->reset_xrun_count ();
+		_xrun_while_recording = false;
 	}
 	return true;
 }

gtk2_ardour/dsp_load_indicator.h

@@ -31,6 +31,8 @@ public:
 	void set_xrun_count (const unsigned int xruns);
 	void set_dsp_load (const double load);
 
+	void set_xrun_while_recording () {_xrun_while_recording = true;}
+
 protected:
 	bool alert () const;
 	ArdourGauge::Status indicator () const;
@@ -42,6 +44,7 @@ private:
 
 	float _dsp_load;
 	unsigned int _xrun_count;
+	bool _xrun_while_recording;
 };
 
 #endif