From 1a86104b19c3a046c2443c26f0c00e26336b775d Mon Sep 17 00:00:00 2001
From: Eyck Jentzsch <eyck@minres.com>
Date: Sun, 19 Mar 2023 17:09:13 +0100
Subject: [PATCH] fixes alignment issue in waveform canvas

---
 .../scviewer/database/ui/swt/internal/WaveformCanvas.java      | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/WaveformCanvas.java b/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/WaveformCanvas.java
index ec07c38..66ef070 100644
--- a/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/WaveformCanvas.java
+++ b/plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/WaveformCanvas.java
@@ -363,6 +363,9 @@ public class WaveformCanvas extends Canvas implements IWaveformZoom{
 		} else { /* image is less higher than client area */
 			vertical.setMaximum(clientHeight);
 			vertical.setEnabled(false);
+			if ( -origin.y > vertical.getMaximum() - height) {
+				origin.y = -vertical.getMaximum() + height;
+			}
 		}
 		vertical.setThumb(clientHeight);
 		vertical.setSelection(-origin.y);