From 44528f4fd09a5a6681207ff0516a365f2cb8f20d Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 7 Jan 2021 20:46:44 +0100
Subject: [PATCH] Fix editor summary exposure rectangle

Rectangle uses position and width, not coordinate pairs.
---
 gtk2_ardour/editor_summary.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtk2_ardour/editor_summary.cc b/gtk2_ardour/editor_summary.cc
index 24af3d2b1e..d472d7eca0 100644
--- a/gtk2_ardour/editor_summary.cc
+++ b/gtk2_ardour/editor_summary.cc
@@ -931,7 +931,7 @@ EditorSummary::playhead_position_changed (samplepos_t p)
 	if (_session && o != n) {
 		int a = max(2, min (o, n));
 		int b = max (o, n);
-		set_overlays_dirty_rect (a - 2, 0, b + 2, get_height ());
+		set_overlays_dirty_rect (a - 2, 0, b - a + 4, get_height ());
 	}
 }