Merge branch 'bug/JAL-2778again' into releases/Release_2_10_4_Branch

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

diff --git a/src/jalview/gui/ScalePanel.java b/src/jalview/gui/ScalePanel.java
index 2dc198e..cb7f0da 100755 (executable)
--- a/src/jalview/gui/ScalePanel.java
+++ b/src/jalview/gui/ScalePanel.java
@@ -409,6 +409,8 @@ public class ScalePanel extends JPanel
   @Override
   public void paintComponent(Graphics g)
   {
+    super.paintComponent(g);
+
     /*
      * shouldn't get called in wrapped mode as the scale above is
      * drawn instead by SeqCanvas.drawNorthScale
@@ -550,10 +552,15 @@ public class ScalePanel extends JPanel
     // paint, so scroll events are identified as changes to the horizontal or
     // vertical start value.
     if (evt.getPropertyName().equals(ViewportRanges.STARTRES)
-            || evt.getPropertyName().equals(ViewportRanges.STARTRESANDSEQ))
+            || evt.getPropertyName().equals(ViewportRanges.STARTRESANDSEQ)
+            || evt.getPropertyName().equals(ViewportRanges.MOVE_VIEWPORT))
     {
       // scroll event, repaint panel
-      repaint();
+       
+       // Call repaint on alignment panel so that repaints from other alignment
+    // panel components can be aggregated. Otherwise performance of the overview
+    // window and others may be adversely affected.
+      av.getAlignPanel().repaint();
     }
   }