From 6bb926966b1deea4c08de080355b4f6bbabf1f4f Mon Sep 17 00:00:00 2001
From: amwaterhouse <Andrew Waterhouse>
Date: Mon, 29 Jan 2007 17:41:31 +0000
Subject: [PATCH] Image for labels, stops flickering

---
 src/jalview/appletgui/AnnotationLabels.java |   15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/jalview/appletgui/AnnotationLabels.java b/src/jalview/appletgui/AnnotationLabels.java
index 5150867..48cea13 100755
--- a/src/jalview/appletgui/AnnotationLabels.java
+++ b/src/jalview/appletgui/AnnotationLabels.java
@@ -28,6 +28,7 @@ import jalview.datamodel.*;
 public class AnnotationLabels
     extends Panel implements ActionListener, MouseListener, MouseMotionListener
 {
+  Image image;
   boolean active = false;
   AlignmentPanel ap;
   AlignViewport av;
@@ -232,9 +233,21 @@ public class AnnotationLabels
       }
     }
 
+    public void update(Graphics g)
+    {
+      paint(g);
+    }
+
   public void paint(Graphics g)
   {
-    drawComponent(g, getSize().width);
+    int w = getSize().width;
+    if (image == null || w != image.getWidth(this))
+    {
+      image = createImage(w, ap.annotationPanel.getSize().height);
+    }
+
+    drawComponent(image.getGraphics(), w);
+    g.drawImage(image,0,0,this);
   }
 
   public void drawComponent(Graphics g, int width)
-- 
1.7.10.2