Merge branch 'bug/JAL-2864nullOverviewCanvas' into develop

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

diff --git a/src/jalview/gui/OverviewCanvas.java b/src/jalview/gui/OverviewCanvas.java
index 7371eb5..89088b8 100644 (file)
--- a/src/jalview/gui/OverviewCanvas.java
+++ b/src/jalview/gui/OverviewCanvas.java
@@ -157,11 +157,9 @@ public class OverviewCanvas extends JComponent
     {
       mg.translate(0, od.getSequencesHeight());
       or.drawGraph(mg, av.getAlignmentConservationAnnotation(),
-              av.getCharWidth(), od.getGraphHeight(),
-              od.getColumns(av.getAlignment()));
+              od.getGraphHeight(), od.getColumns(av.getAlignment()));
       mg.translate(0, -od.getSequencesHeight());
     }
-    System.gc();
 
     or.removePropertyChangeListener(progressPanel);
     or = null;
@@ -183,6 +181,8 @@ public class OverviewCanvas extends JComponent
   @Override
   public void paintComponent(Graphics g)
   {
+    super.paintComponent(g);
+
     if (restart)
     {
       if (lastMiniMe == null)
@@ -204,7 +204,8 @@ public class OverviewCanvas extends JComponent
               && ((getWidth() != od.getWidth())
                       || (getHeight() != od.getHeight())))
       {
-        // if there is annotation, scale the alignment and annotation separately
+        // if there is annotation, scale the alignment and annotation
+        // separately
         if (od.getGraphHeight() > 0)
         {
           BufferedImage topImage = lastMiniMe.getSubimage(0, 0,
@@ -235,28 +236,28 @@ public class OverviewCanvas extends JComponent
           od.setHeight(getHeight());
         }
 
-        // scale lastMiniMe to the new size
-        g.drawImage(lastMiniMe, 0, 0, getWidth(), getHeight(), this);
-
         // make sure the box is in the right place
         od.setBoxPosition(av.getAlignment().getHiddenSequences(),
                 av.getAlignment().getHiddenColumns());
       }
-      else // not a resize
-      {
-        // fall back to normal behaviour
-        g.drawImage(lastMiniMe, 0, 0, getWidth(), getHeight(), this);
-      }
+      // fall back to normal behaviour
+      g.drawImage(lastMiniMe, 0, 0, getWidth(), getHeight(), this);
     }
-
+    else
+    {
+      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;