From 2d137c4d89286572fba9e1f81eee9b35e4ca4a97 Mon Sep 17 00:00:00 2001
From: kiramt <k.mourao@dundee.ac.uk>
Date: Wed, 30 Aug 2017 07:35:51 +0100
Subject: [PATCH] JAL-2587 Removed dissolve

---
 src/jalview/gui/OverviewCanvas.java |   71 +----------------------------------
 1 file changed, 2 insertions(+), 69 deletions(-)

diff --git a/src/jalview/gui/OverviewCanvas.java b/src/jalview/gui/OverviewCanvas.java
index 57070f2..daa602d 100644
--- a/src/jalview/gui/OverviewCanvas.java
+++ b/src/jalview/gui/OverviewCanvas.java
@@ -24,23 +24,14 @@ import jalview.api.AlignViewportI;
 import jalview.renderer.OverviewRenderer;
 import jalview.viewmodel.OverviewDimensions;
 
-import java.awt.AlphaComposite;
 import java.awt.Color;
 import java.awt.Graphics;
-import java.awt.Graphics2D;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
 import java.awt.image.BufferedImage;
 
 import javax.swing.JComponent;
-import javax.swing.Timer;
 
 public class OverviewCanvas extends JComponent
 {
-  private static final long RUNNING_TIME = 1000;
-
-  private static final int SPEED = 40;
-
   private static final Color TRANS_GREY = new Color(100, 100, 100, 25);
 
   // This is set true if the alignment view changes whilst
@@ -55,8 +46,6 @@ public class OverviewCanvas extends JComponent
 
   private BufferedImage lastMiniMe = null;
 
-  private BufferedImage veryLastMiniMe = null;
-
   // Can set different properties in this seqCanvas than
   // main visible SeqCanvas
   private SequenceRenderer sr;
@@ -69,12 +58,6 @@ public class OverviewCanvas extends JComponent
 
   private AlignViewportI av;
 
-  private float alpha = 0f;
-
-  private long startTime = -1;
-
-  private final Timer timer;
-
   private ProgressPanel progressPanel;
 
   public OverviewCanvas(OverviewDimensions overviewDims,
@@ -90,36 +73,6 @@ public class OverviewCanvas extends JComponent
     fr = new jalview.renderer.seqfeatures.FeatureRenderer(av);
 
     setSize(od.getWidth(), od.getHeight());
-
-    timer = new Timer(SPEED, new ActionListener()
-    {
-
-      @Override
-      public void actionPerformed(ActionEvent e)
-      {
-        if (startTime < 0)
-        {
-          startTime = System.currentTimeMillis();
-        }
-        else
-        {
-
-          long time = System.currentTimeMillis();
-          long duration = time - startTime;
-          if (duration >= RUNNING_TIME)
-          {
-            startTime = -1;
-            ((Timer) e.getSource()).stop();
-            alpha = 0f;
-          }
-          else
-          {
-            alpha = 1f - ((float) duration / (float) RUNNING_TIME);
-          }
-          repaint();
-        }
-      }
-    });
   }
 
   /**
@@ -171,7 +124,6 @@ public class OverviewCanvas extends JComponent
           FeatureRenderer transferRenderer)
   {
     miniMe = null;
-    veryLastMiniMe = lastMiniMe;
 
     if (showSequenceFeatures)
     {
@@ -209,8 +161,6 @@ public class OverviewCanvas extends JComponent
     {
       updaterunning = false;
       lastMiniMe = miniMe;
-      alpha = 1f;
-      timer.start();
     }
   }
 
@@ -278,25 +228,8 @@ public class OverviewCanvas extends JComponent
       }
       else // not a resize
       {
-        if (alpha != 0) // this is a timer triggered dissolve
-        {
-          Graphics2D g2d = (Graphics2D) g.create();
-          
-          // draw the original image
-          g2d.drawImage(veryLastMiniMe, 0, 0, getWidth(), getHeight(),
-                  this);
-
-          // draw the new image on top with varying degrees of transparency
-          g2d.setComposite(AlphaComposite.SrcOver.derive(1f - alpha));
-          g2d.drawImage(lastMiniMe, 0, 0, getWidth(), getHeight(), this);
-
-          g2d.dispose();
-        }
-        else
-        {
-          // 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);
       }
     }
 
-- 
1.7.10.2