JAL-2609 first try

[jalview.git] / src / jalview / gui / SeqPanel.java

diff --git a/src/jalview/gui/SeqPanel.java b/src/jalview/gui/SeqPanel.java
index e12c397..eedad59 100644 (file)
--- a/src/jalview/gui/SeqPanel.java
+++ b/src/jalview/gui/SeqPanel.java
@@ -215,7 +215,7 @@ public class SeqPanel extends JPanel implements MouseListener,
               + hgap + seqCanvas.getAnnotationHeight();
 
       int y = evt.getY();
-      y -= hgap;
+      y = Math.max(0, y - hgap);
       x = Math.max(0, x - seqCanvas.labelWidthWest);
 
       int cwidth = seqCanvas.getWrappedCanvasWidth(this.getWidth());
@@ -228,8 +228,8 @@ public class SeqPanel extends JPanel implements MouseListener,
       wrappedBlock += startRes / cwidth;
       // allow for wrapped view scrolled right (possible from Overview)
       int startOffset = startRes % cwidth;
-      res = wrappedBlock * cwidth
-              + Math.min(cwidth - 1, startOffset + x / av.getCharWidth());
+      res = wrappedBlock * cwidth + startOffset
+              + +Math.min(cwidth - 1, x / av.getCharWidth());
     }
     else
     {