From 69d63bac92b70a41905057cf7b23e66374a31148 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Wed, 29 May 2024 14:13:47 -0600
Subject: [PATCH] do not plot ruler marks that are left of the current
 (scroll-adjusted) canvas edge

---
 libs/canvas/ruler.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libs/canvas/ruler.cc b/libs/canvas/ruler.cc
index f760021f9d..68ebb2aa94 100644
--- a/libs/canvas/ruler.cc
+++ b/libs/canvas/ruler.cc
@@ -170,6 +170,10 @@ Ruler::render (Rect const & area, Cairo::RefPtr<Cairo::Context> cr) const
 			pos.x = round (m->position/_metric->units_per_pixel) + self.x0;
 			pos.y = self.y1; /* bottom edge */
 
+			if (pos.x < 0) {
+				continue;
+			}
+
 			if (fd != last_font_description) {
 				layout->set_font_description (*fd);
 				last_font_description = fd;