X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fgui%2FOverviewCanvas.java;h=470fd643df5bd9e41031493993f656e3e901f4dc;hb=229c987fa6b3d5b98471ce0d4e83fbbf957e792b;hp=ec2c49fa3548a6924c090b711fe1bf29ba1c4b4d;hpb=348fe2d15827689d155df9345e4f10753cab6ac9;p=jalview.git

diff --git a/src/jalview/gui/OverviewCanvas.java b/src/jalview/gui/OverviewCanvas.java
index ec2c49f..470fd64 100644
--- a/src/jalview/gui/OverviewCanvas.java
+++ b/src/jalview/gui/OverviewCanvas.java
@@ -25,6 +25,7 @@ import jalview.bin.Cache;
 import jalview.renderer.OverviewRenderer;
 import jalview.renderer.OverviewResColourFinder;
 import jalview.viewmodel.OverviewDimensions;
+import jalview.viewmodel.seqfeatures.FeatureRendererModel;
 
 import java.awt.Color;
 import java.awt.Dimension;
@@ -132,7 +133,7 @@ public class OverviewCanvas extends JPanel
    *          the renderer to transfer feature colouring from
    */
   public void draw(boolean showSequenceFeatures, boolean showAnnotation,
-          FeatureRenderer transferRenderer)
+          FeatureRendererModel transferRenderer)
   {
     miniMe = null;
 
@@ -181,7 +182,7 @@ public class OverviewCanvas extends JPanel
   @Override
   public void paintComponent(Graphics g)
   {
-    super.paintComponent(g);
+    // super.paintComponent(g);
 
     if (restart)
     {
@@ -206,7 +207,8 @@ public class OverviewCanvas extends JPanel
       {
         // if there is annotation, scale the alignment and annotation
         // separately
-        if (od.getGraphHeight() > 0)
+        if (od.getGraphHeight() > 0 && od.getSequencesHeight() > 0 // BH 2019
+        )
         {
           BufferedImage topImage = lastMiniMe.getSubimage(0, 0,
                   od.getWidth(), od.getSequencesHeight());
@@ -247,16 +249,16 @@ public class OverviewCanvas extends JPanel
     {
       g.drawImage(lastMiniMe, 0, 0, getWidth(), getHeight(), this);
     }
-    
+
     // draw the box
     g.setColor(Color.red);
     od.drawBox(g);
   }
 
-
   public void dispose()
   {
     dispose = true;
+    od = null;
     synchronized (this)
     {
       restart = true;