From f2eea8b7cec9c6a085082efc5fdb31bfca7831e9 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Sat, 12 Jul 2025 10:28:49 -0600
Subject: [PATCH] reduce jumping note range in MIDI displays when adding notes

---
 gtk2_ardour/midi_streamview.cc |  4 +++-
 gtk2_ardour/midi_view.cc       | 12 ++++++------
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/gtk2_ardour/midi_streamview.cc b/gtk2_ardour/midi_streamview.cc
index fcf546a7ed..b266129dbd 100644
--- a/gtk2_ardour/midi_streamview.cc
+++ b/gtk2_ardour/midi_streamview.cc
@@ -207,7 +207,9 @@ MidiStreamView::display_region (MidiRegionView* region_view, bool)
 		return;
 	}
 
-	_range_dirty = update_data_note_range (source->model()->lowest_note(), source->model()->highest_note());
+	if (!source->model()->empty()) {
+		_range_dirty = update_data_note_range (source->model()->lowest_note(), source->model()->highest_note());
+	}
 
 	// Display region contents
 	region_view->display_model (source->model());
diff --git a/gtk2_ardour/midi_view.cc b/gtk2_ardour/midi_view.cc
index efcc82dc4d..6a832deea3 100644
--- a/gtk2_ardour/midi_view.cc
+++ b/gtk2_ardour/midi_view.cc
@@ -1165,18 +1165,18 @@ MidiView::model_changed()
 	if (!notes.empty()) {
 		low_note = _model->lowest_note ();
 		hi_note = _model->highest_note ();
+
+		_midi_context.update_data_note_range (low_note, hi_note);
+
+		if (_midi_context.visibility_range_style() == MidiViewBackground::ContentsRange) {
+			maybe_set_note_range (low_note, hi_note);
+		}
 	} else {
 		/* Pick a reasonable default range if the model is mepty */
 		low_note = UIConfiguration::instance().get_default_lower_midi_note();
 		hi_note = UIConfiguration::instance().get_default_upper_midi_note();
 	}
 
-	_midi_context.update_data_note_range (low_note, hi_note);
-
-	if (_midi_context.visibility_range_style() == MidiViewBackground::ContentsRange) {
-		maybe_set_note_range (low_note, hi_note);
-	}
-
 	for (auto & note : notes) {
 
 		bool visible;