X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fviewmodel%2FOverviewDimensions.java;h=c153dc1505545ecf79fc1a7d10c2a9e71a09a6d1;hb=51b0b157926ed477cb558ca5971126bf9fccbd31;hp=170f4e9ceca8d30d7fe6125e3f923d6e9ecf2c3f;hpb=f4766a7bbcfae845fc95923b01fa14ff83d589ff;p=jalview.git

diff --git a/src/jalview/viewmodel/OverviewDimensions.java b/src/jalview/viewmodel/OverviewDimensions.java
index 170f4e9..c153dc1 100644
--- a/src/jalview/viewmodel/OverviewDimensions.java
+++ b/src/jalview/viewmodel/OverviewDimensions.java
@@ -26,6 +26,7 @@ import jalview.datamodel.AlignmentI;
 import jalview.datamodel.HiddenColumns;
 import jalview.datamodel.HiddenSequences;
 
+import java.awt.Dimension;
 import java.awt.Graphics;
 
 public abstract class OverviewDimensions
@@ -58,6 +59,10 @@ public abstract class OverviewDimensions
 
   protected int alheight;
 
+  protected float widthRatio;
+
+  protected float heightRatio;
+
   /**
    * Create an OverviewDimensions object
    * 
@@ -67,15 +72,22 @@ public abstract class OverviewDimensions
    *          true if the annotation panel is to be shown, false otherwise
    */
   public OverviewDimensions(ViewportRanges ranges,
-          boolean showAnnotationPanel)
+          boolean showAnnotationPanel, Dimension dim)
   {
+    if (!showAnnotationPanel)
+    {
+      graphHeight = 0;
+    }
+
     // scale the initial size of overviewpanel to shape of alignment
     float initialScale = (float) ranges.getAbsoluteAlignmentWidth()
             / (float) ranges.getAbsoluteAlignmentHeight();
 
-    if (!showAnnotationPanel)
+    if (dim != null)
     {
-      graphHeight = 0;
+      width = dim.width;
+      sequencesHeight = dim.height;
+      return;
     }
 
     if (ranges.getAbsoluteAlignmentWidth() > ranges
@@ -157,23 +169,25 @@ public abstract class OverviewDimensions
   public float getPixelsPerCol()
   {
     resetAlignmentDims();
-    return (float) width / alwidth;
+    return 1 / widthRatio;
   }
 
   public float getPixelsPerSeq()
   {
     resetAlignmentDims();
-    return (float) sequencesHeight / alheight;
+    return 1 / heightRatio;
   }
 
   public void setWidth(int w)
   {
     width = w;
+    widthRatio = (float) alwidth / width;
   }
 
   public void setHeight(int h)
   {
     sequencesHeight = h - graphHeight;
+    heightRatio = (float) alheight / sequencesHeight;
   }
 
   /**
@@ -273,14 +287,14 @@ public abstract class OverviewDimensions
 
     // boxX, boxY is the x,y location equivalent to startRes, startSeq
     int xPos = Math.min(startRes, alwidth - vpwidth + 1);
-    boxX = Math.round((float) xPos * width / alwidth);
-    boxY = Math.round((float) startSeq * sequencesHeight / alheight);
+    boxX = Math.round(xPos / widthRatio);
+    boxY = Math.round(startSeq / heightRatio);
 
     // boxWidth is the width in residues translated to pixels
-    boxWidth = Math.round((float) vpwidth * width / alwidth);
+    boxWidth = Math.round(vpwidth / widthRatio);
 
     // boxHeight is the height in sequences translated to pixels
-    boxHeight = Math.round((float) vpheight * sequencesHeight / alheight);
+    boxHeight = Math.round(vpheight / heightRatio);
   }
 
   /**