JAL-1620 version bump and release notes
[jalview.git] / src / jalview / appletgui / FeatureRenderer.java
old mode 100755 (executable)
new mode 100644 (file)
index 5e65409..6024872
@@ -1,20 +1,22 @@
 /*
- * Jalview - A Sequence Alignment Editor and Viewer
- * Copyright (C) 2007 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.8.2b1)
+ * Copyright (C) 2014 The Jalview Authors
+ * 
+ * This file is part of Jalview.
+ * 
+ * Jalview is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License 
+ * as published by the Free Software Foundation, either version 3
  * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
+ *  
+ * Jalview is distributed in the hope that it will be useful, but 
+ * WITHOUT ANY WARRANTY; without even the implied warranty 
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+ * PURPOSE.  See the GNU General Public License for more details.
+ * 
  * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
  */
 package jalview.appletgui;
 
@@ -24,17 +26,18 @@ import java.awt.*;
 
 import java.awt.event.*;
 
-
-import jalview.appletgui.FeatureSettings.MyCheckbox;
 import jalview.datamodel.*;
+import jalview.schemes.AnnotationColourGradient;
+import jalview.schemes.GraduatedColor;
+import jalview.util.MessageManager;
 
 /**
  * DOCUMENT ME!
- *
+ * 
  * @author $author$
  * @version $Revision$
  */
-public class FeatureRenderer
+public class FeatureRenderer implements jalview.api.FeatureRenderer
 {
   AlignViewport av;
 
@@ -55,6 +58,7 @@ public class FeatureRenderer
   String[] renderOrder;
 
   FontMetrics fm;
+
   int charOffset;
 
   float transparency = 1f;
@@ -63,8 +67,9 @@ public class FeatureRenderer
 
   /**
    * Creates a new FeatureRenderer object.
-   *
-   * @param av DOCUMENT ME!
+   * 
+   * @param av
+   *          DOCUMENT ME!
    */
   public FeatureRenderer(AlignViewport av)
   {
@@ -82,20 +87,133 @@ public class FeatureRenderer
     featureGroups = fr.featureGroups;
     featureColours = fr.featureColours;
     transparency = fr.transparency;
+    if (av != null && fr.av != null && fr.av != av)
+    {
+      if (fr.av.featuresDisplayed != null)
+      {
+        if (av.featuresDisplayed == null)
+        {
+          av.featuresDisplayed = new Hashtable();
+        }
+        else
+        {
+          av.featuresDisplayed.clear();
+        }
+        Enumeration en = fr.av.featuresDisplayed.keys();
+        while (en.hasMoreElements())
+        {
+          av.featuresDisplayed.put(en.nextElement(), Boolean.TRUE);
+        }
+      }
+    }
   }
 
-
   static String lastFeatureAdded;
+
   static String lastFeatureGroupAdded;
+
   static String lastDescriptionAdded;
 
   int featureIndex = 0;
+
   boolean deleteFeature = false;
-  Panel colourPanel;
+
+  FeatureColourPanel colourPanel;
+
+  class FeatureColourPanel extends Panel
+  {
+    String label = "";
+
+    private Color maxCol;
+
+    private boolean isColourByLabel, isGcol;
+
+    /**
+     * render a feature style in the amend feature dialog box
+     */
+    public void updateColor(Object newcol)
+    {
+
+      Color bg, col = null;
+      GraduatedColor gcol = null;
+      String vlabel = "";
+      if (newcol instanceof Color)
+      {
+        isGcol = false;
+        col = (Color) newcol;
+        gcol = null;
+      }
+      else if (newcol instanceof GraduatedColor)
+      {
+        isGcol = true;
+        gcol = (GraduatedColor) newcol;
+        col = null;
+      }
+      else
+      {
+        throw new Error(MessageManager.getString("error.invalid_colour_for_mycheckbox"));
+      }
+      if (col != null)
+      {
+        setBackground(bg = col);
+      }
+      else
+      {
+        if (gcol.getThreshType() != AnnotationColourGradient.NO_THRESHOLD)
+        {
+          vlabel += " "
+                  + ((gcol.getThreshType() == AnnotationColourGradient.ABOVE_THRESHOLD) ? "(>)"
+                          : "(<)");
+        }
+        if (isColourByLabel = gcol.isColourByLabel())
+        {
+          setBackground(bg = Color.white);
+          vlabel += " (by Label)";
+        }
+        else
+        {
+          setBackground(bg = gcol.getMinColor());
+          maxCol = gcol.getMaxColor();
+        }
+      }
+      label = vlabel;
+      setBackground(bg);
+      repaint();
+    }
+
+    FeatureColourPanel()
+    {
+      super(null);
+    }
+
+    public void paint(Graphics g)
+    {
+      Dimension d = getSize();
+      if (isGcol)
+      {
+        if (isColourByLabel)
+        {
+          g.setColor(Color.white);
+          g.fillRect(d.width / 2, 0, d.width / 2, d.height);
+          g.setColor(Color.black);
+          Font f = new Font("Verdana", Font.PLAIN, 10);
+          g.setFont(f);
+          g.drawString(MessageManager.getString("label.label"), 0, 0);
+        }
+        else
+        {
+          g.setColor(maxCol);
+          g.fillRect(d.width / 2, 0, d.width / 2, d.height);
+
+        }
+      }
+    }
+
+  }
+
   boolean amendFeatures(final SequenceI[] sequences,
-                        final SequenceFeature[] features,
-                        boolean newFeatures,
-                        final AlignmentPanel ap)
+          final SequenceFeature[] features, boolean newFeatures,
+          final AlignmentPanel ap)
   {
     Panel bigPanel = new Panel(new BorderLayout());
     final TextField name = new TextField(16);
@@ -107,75 +225,72 @@ public class FeatureRenderer
     Button deleteButton = new Button("Delete");
     deleteFeature = false;
 
-    colourPanel = new Panel(null);
-    colourPanel.setSize(110,15);
+    colourPanel = new FeatureColourPanel();
+    colourPanel.setSize(110, 15);
     final FeatureRenderer fr = this;
 
     Panel panel = new Panel(new GridLayout(3, 1));
 
+    featureIndex = 0; // feature to be amended.
     Panel tmp;
 
-    ///////////////////////////////////////
-    ///MULTIPLE FEATURES AT SELECTED RESIDUE
-    if(!newFeatures && features.length>1)
+    // /////////////////////////////////////
+    // /MULTIPLE FEATURES AT SELECTED RESIDUE
+    if (!newFeatures && features.length > 1)
     {
-     panel = new Panel(new GridLayout(4, 1));
-     tmp = new Panel();
-     tmp.add(new Label("Select Feature: "));
-     overlaps = new Choice();
-     for(int i=0; i<features.length; i++)
-     {
-       String item = features[i].getType()
-        +"/"+features[i].getBegin()+"-"+features[i].getEnd();
-
-       if(features[i].getFeatureGroup()!=null)
-         item += " ("+features[i].getFeatureGroup()+")";
+      panel = new Panel(new GridLayout(4, 1));
+      tmp = new Panel();
+      tmp.add(new Label("Select Feature: "));
+      overlaps = new Choice();
+      for (int i = 0; i < features.length; i++)
+      {
+        String item = features[i].getType() + "/" + features[i].getBegin()
+                + "-" + features[i].getEnd();
 
-       overlaps.addItem(item);
-     }
+        if (features[i].getFeatureGroup() != null)
+          item += " (" + features[i].getFeatureGroup() + ")";
 
-     tmp.add(overlaps);
+        overlaps.addItem(item);
+      }
 
-     overlaps.addItemListener(new java.awt.event.ItemListener()
-     {
-       public void itemStateChanged(java.awt.event.ItemEvent e)
-       {
-         int index = overlaps.getSelectedIndex();
-         if (index != -1)
-         {
-           featureIndex = index;
-           name.setText(features[index].getType());
-           description.setText(features[index].getDescription());
-           source.setText(features[index].getFeatureGroup());
-           start.setText(features[index].getBegin()+"");
-           end.setText(features[index].getEnd()+"");
+      tmp.add(overlaps);
 
-           SearchResults highlight = new SearchResults();
-           highlight.addResult(sequences[0],
-                               features[index].getBegin(),
-                               features[index].getEnd());
+      overlaps.addItemListener(new java.awt.event.ItemListener()
+      {
+        public void itemStateChanged(java.awt.event.ItemEvent e)
+        {
+          int index = overlaps.getSelectedIndex();
+          if (index != -1)
+          {
+            featureIndex = index;
+            name.setText(features[index].getType());
+            description.setText(features[index].getDescription());
+            source.setText(features[index].getFeatureGroup());
+            start.setText(features[index].getBegin() + "");
+            end.setText(features[index].getEnd() + "");
 
-           ap.seqPanel.seqCanvas.highlightSearchResults(highlight);
+            SearchResults highlight = new SearchResults();
+            highlight.addResult(sequences[0], features[index].getBegin(),
+                    features[index].getEnd());
 
-         }
-         Color col = getColour(name.getText());
-         if (col == null)
-         {
-           col = new
-               jalview.schemes.UserColourScheme()
-               .createColourFromName(name.getText());
-         }
+            ap.seqPanel.seqCanvas.highlightSearchResults(highlight);
 
-         colourPanel.setBackground(col);
-       }
-     });
+          }
+          Object col = getFeatureStyle(name.getText());
+          if (col == null)
+          {
+            col = new jalview.schemes.UserColourScheme()
+                    .createColourFromName(name.getText());
+          }
 
+          colourPanel.updateColor(col);
+        }
+      });
 
-     panel.add(tmp);
+      panel.add(tmp);
     }
-    //////////
-    //////////////////////////////////////
-
+    // ////////
+    // ////////////////////////////////////
 
     tmp = new Panel();
     panel.add(tmp);
@@ -184,7 +299,7 @@ public class FeatureRenderer
 
     tmp = new Panel();
     panel.add(tmp);
-    tmp.add(new Label("Group: ",Label.RIGHT));
+    tmp.add(new Label("Group: ", Label.RIGHT));
     tmp.add(source);
 
     tmp = new Panel();
@@ -238,99 +353,103 @@ public class FeatureRenderer
       }
     }
 
+    String title = newFeatures ? MessageManager.getString("label.create_new_sequence_features")
+            : MessageManager.formatMessage("label.amend_delete_features", new String[]{sequences[0].getName()});
 
-    String title = newFeatures ? "Create New Sequence Feature(s)" :
-        "Amend/Delete Features for "
-        + sequences[0].getName();
-
-    final JVDialog dialog = new JVDialog(ap.alignFrame,
-                               title,
-                               true,
-                               385,240);
+    final JVDialog dialog = new JVDialog(ap.alignFrame, title, true, 385,
+            240);
 
     dialog.setMainPanel(bigPanel);
 
-    if(newFeatures)
+    if (newFeatures)
     {
       name.setText(lastFeatureAdded);
       source.setText(lastFeatureGroupAdded);
     }
     else
     {
-      dialog.ok.setLabel("Amend");
+      dialog.ok.setLabel(MessageManager.getString("label.amend"));
       dialog.buttonPanel.add(deleteButton, 1);
       deleteButton.addActionListener(new ActionListener()
-          {
-            public void actionPerformed(ActionEvent evt)
-            {
-              deleteFeature = true;
-              dialog.setVisible(false);
-            }
-          });
+      {
+        public void actionPerformed(ActionEvent evt)
+        {
+          deleteFeature = true;
+          dialog.setVisible(false);
+        }
+      });
       name.setText(features[0].getType());
       source.setText(features[0].getFeatureGroup());
     }
 
-    start.setText(features[0].getBegin()+"");
-    end.setText(features[0].getEnd()+"");
+    start.setText(features[0].getBegin() + "");
+    end.setText(features[0].getEnd() + "");
     description.setText(features[0].getDescription());
-
     Color col = getColour(name.getText());
     if (col == null)
     {
-      col = new
-          jalview.schemes.UserColourScheme()
-          .createColourFromName(name.getText());
+      col = new jalview.schemes.UserColourScheme()
+              .createColourFromName(name.getText());
     }
-
-    colourPanel.setBackground(col);
-
+    Object fcol = getFeatureStyle(name.getText());
+    // simply display the feature color in a box
+    colourPanel.updateColor(fcol);
     dialog.setResizable(true);
-
-
+    // TODO: render the graduated color in the box.
     colourPanel.addMouseListener(new java.awt.event.MouseAdapter()
     {
       public void mousePressed(java.awt.event.MouseEvent evt)
       {
-        new UserDefinedColours(fr, ap.alignFrame);
+        if (!colourPanel.isGcol)
+        {
+          new UserDefinedColours(fr, ap.alignFrame);
+        }
+        else
+        {
+          FeatureColourChooser fcc = new FeatureColourChooser(
+                  ap.alignFrame, name.getText());
+          dialog.transferFocus();
+        }
       }
     });
-
     dialog.setVisible(true);
 
     jalview.io.FeaturesFile ffile = new jalview.io.FeaturesFile();
 
     if (dialog.accept)
     {
-      //This ensures that the last sequence
-      //is refreshed and new features are rendered
+      // This ensures that the last sequence
+      // is refreshed and new features are rendered
       lastSeq = null;
       lastFeatureAdded = name.getText().trim();
       lastFeatureGroupAdded = source.getText().trim();
       lastDescriptionAdded = description.getText().replace('\n', ' ');
     }
 
-    if(lastFeatureGroupAdded !=null && lastFeatureGroupAdded.length()<1)
+    if (lastFeatureGroupAdded != null && lastFeatureGroupAdded.length() < 1)
       lastFeatureGroupAdded = null;
 
-
     if (!newFeatures)
     {
-      SequenceFeature sf = features[featureIndex];
 
+      SequenceFeature sf = features[featureIndex];
       if (dialog.accept)
       {
         sf.type = lastFeatureAdded;
         sf.featureGroup = lastFeatureGroupAdded;
         sf.description = lastDescriptionAdded;
-        setColour(sf.type, colourPanel.getBackground());
+        if (!colourPanel.isGcol)
+        {
+          // update colour - otherwise its already done.
+          setColour(sf.type, colourPanel.getBackground());
+        }
         try
         {
           sf.begin = Integer.parseInt(start.getText());
-          sf.end =  Integer.parseInt(end.getText());
+          sf.end = Integer.parseInt(end.getText());
+        } catch (NumberFormatException ex)
+        {
         }
-        catch (NumberFormatException ex)
-        {}
 
         ffile.parseDescriptionHTML(sf, false);
       }
@@ -342,7 +461,7 @@ public class FeatureRenderer
     }
     else
     {
-      if (dialog.accept && name.getText().length()>0)
+      if (dialog.accept && name.getText().length() > 0)
       {
         for (int i = 0; i < sequences.length; i++)
         {
@@ -364,39 +483,44 @@ public class FeatureRenderer
         }
 
         col = colourPanel.getBackground();
-        setColour(lastFeatureAdded, col);
+        // setColour(lastFeatureAdded, fcol);
 
-        if(lastFeatureGroupAdded!=null)
+        if (lastFeatureGroupAdded != null)
         {
           featureGroups.put(lastFeatureGroupAdded, new Boolean(true));
-          av.featuresDisplayed.put(lastFeatureGroupAdded,
-                                   new Integer(col.getRGB()));
         }
+        if (fcol instanceof Color)
+        {
+          setColour(lastFeatureAdded, fcol);
+        }
+        av.featuresDisplayed.put(lastFeatureAdded,
+                getFeatureStyle(lastFeatureAdded));
+
         findAllFeatures();
 
-        String [] tro = new String[renderOrder.length];
-        tro[0] = renderOrder[renderOrder.length-1];
-        System.arraycopy(renderOrder,0,tro,1,renderOrder.length-1);
+        String[] tro = new String[renderOrder.length];
+        tro[0] = renderOrder[renderOrder.length - 1];
+        System.arraycopy(renderOrder, 0, tro, 1, renderOrder.length - 1);
         renderOrder = tro;
-
-        ap.paintAlignment(true);
-
-        return true;
       }
       else
       {
+        // no update to the alignment
         return false;
       }
     }
-
-    findAllFeatures();
+    // refresh the alignment and the feature settings dialog
+    if (av.featureSettings != null)
+    {
+      av.featureSettings.refreshTable();
+    }
+    // findAllFeatures();
 
     ap.paintAlignment(true);
 
     return true;
   }
 
-
   public Color findFeatureColour(Color initialCol, SequenceI seq, int i)
   {
     overview = true;
@@ -428,41 +552,50 @@ public class FeatureRenderer
       return initialCol;
     }
 
-    return new Color( ( (Integer) currentColour).intValue());
+    return new Color(((Integer) currentColour).intValue());
   }
 
   /**
-   * This is used by the Molecule Viewer to get the accurate colour
-   * of the rendered sequence
+   * This is used by the Molecule Viewer to get the accurate colour of the
+   * rendered sequence
    */
   boolean overview = false;
 
-
   /**
    * DOCUMENT ME!
-   *
-   * @param g DOCUMENT ME!
-   * @param seq DOCUMENT ME!
-   * @param sg DOCUMENT ME!
-   * @param start DOCUMENT ME!
-   * @param end DOCUMENT ME!
-   * @param x1 DOCUMENT ME!
-   * @param y1 DOCUMENT ME!
-   * @param width DOCUMENT ME!
-   * @param height DOCUMENT ME!
+   * 
+   * @param g
+   *          DOCUMENT ME!
+   * @param seq
+   *          DOCUMENT ME!
+   * @param sg
+   *          DOCUMENT ME!
+   * @param start
+   *          DOCUMENT ME!
+   * @param end
+   *          DOCUMENT ME!
+   * @param x1
+   *          DOCUMENT ME!
+   * @param y1
+   *          DOCUMENT ME!
+   * @param width
+   *          DOCUMENT ME!
+   * @param height
+   *          DOCUMENT ME!
    */
   // String type;
   // SequenceFeature sf;
-
   SequenceI lastSeq;
+
   SequenceFeature[] sequenceFeatures;
+
   int sfSize, sfindex, spos, epos;
 
   synchronized public void drawSequence(Graphics g, SequenceI seq,
-                           int start, int end, int y1)
+          int start, int end, int y1)
   {
     if (seq.getSequenceFeatures() == null
-        || seq.getSequenceFeatures().length == 0)
+            || seq.getSequenceFeatures().length == 0)
     {
       return;
     }
@@ -472,7 +605,8 @@ public class FeatureRenderer
       transparencySetter.setTransparency(g, transparency);
     }
 
-    if (lastSeq == null || seq != lastSeq || sequenceFeatures!=seq.getSequenceFeatures())
+    if (lastSeq == null || seq != lastSeq
+            || sequenceFeatures != seq.getSequenceFeatures())
     {
       lastSeq = seq;
       sequenceFeatures = seq.getSequenceFeatures();
@@ -518,30 +652,31 @@ public class FeatureRenderer
         }
 
         if (featureGroups != null
-            && sequenceFeatures[sfindex].featureGroup != null
-            &&
-            featureGroups.containsKey(sequenceFeatures[sfindex].featureGroup)
-            &&
-            ! ( (Boolean) featureGroups.get(sequenceFeatures[sfindex].
-                                            featureGroup)).
-            booleanValue())
+                && sequenceFeatures[sfindex].featureGroup != null
+                && featureGroups
+                        .containsKey(sequenceFeatures[sfindex].featureGroup)
+                && !((Boolean) featureGroups
+                        .get(sequenceFeatures[sfindex].featureGroup))
+                        .booleanValue())
         {
           continue;
         }
 
-        if (!overview && (sequenceFeatures[sfindex].getBegin() > epos
-                          || sequenceFeatures[sfindex].getEnd() < spos))
+        if (!overview
+                && (sequenceFeatures[sfindex].getBegin() > epos || sequenceFeatures[sfindex]
+                        .getEnd() < spos))
         {
           continue;
         }
 
         if (overview)
         {
-          if (sequenceFeatures[sfindex].begin <= start &&
-              sequenceFeatures[sfindex].end >= start)
+          if (sequenceFeatures[sfindex].begin <= start
+                  && sequenceFeatures[sfindex].end >= start)
           {
-            currentColour = av.featuresDisplayed.get(sequenceFeatures[sfindex].
-                type);
+            currentColour = new Integer(
+                    getColour(sequenceFeatures[sfindex]).getRGB());// av.featuresDisplayed
+            // .get(sequenceFeatures[sfindex].type);
           }
 
         }
@@ -549,26 +684,30 @@ public class FeatureRenderer
         {
 
           renderFeature(g, seq,
-                        seq.findIndex(sequenceFeatures[sfindex].begin) - 1,
-                        seq.findIndex(sequenceFeatures[sfindex].begin) - 1,
-                        new Color( ( (Integer) av.featuresDisplayed.get(
-                            sequenceFeatures[sfindex].type)).intValue()),
-                        start, end, y1);
+                  seq.findIndex(sequenceFeatures[sfindex].begin) - 1,
+                  seq.findIndex(sequenceFeatures[sfindex].begin) - 1,
+                  getColour(sequenceFeatures[sfindex])
+                  // new Color(((Integer) av.featuresDisplayed
+                  // .get(sequenceFeatures[sfindex].type)).intValue())
+                  , start, end, y1);
           renderFeature(g, seq,
-                        seq.findIndex(sequenceFeatures[sfindex].end) - 1,
-                        seq.findIndex(sequenceFeatures[sfindex].end) - 1,
-                        new Color( ( (Integer) av.featuresDisplayed.get(
-                            sequenceFeatures[sfindex].type)).intValue()),
-                        start, end, y1);
+                  seq.findIndex(sequenceFeatures[sfindex].end) - 1,
+                  seq.findIndex(sequenceFeatures[sfindex].end) - 1,
+                  getColour(sequenceFeatures[sfindex])
+                  // new Color(((Integer) av.featuresDisplayed
+                  // .get(sequenceFeatures[sfindex].type)).intValue())
+                  , start, end, y1);
 
         }
         else
         {
-          renderFeature(g, seq,
-                        seq.findIndex(sequenceFeatures[sfindex].begin) - 1,
-                        seq.findIndex(sequenceFeatures[sfindex].end) - 1,
-                        getColour(sequenceFeatures[sfindex].type),
-                        start, end, y1);
+          if (showFeature(sequenceFeatures[sfindex]))
+          {
+            renderFeature(g, seq,
+                    seq.findIndex(sequenceFeatures[sfindex].begin) - 1,
+                    seq.findIndex(sequenceFeatures[sfindex].end) - 1,
+                    getColour(sequenceFeatures[sfindex]), start, end, y1);
+          }
         }
 
       }
@@ -581,13 +720,14 @@ public class FeatureRenderer
   }
 
   char s;
+
   int i;
-  void renderFeature(Graphics g, SequenceI seq,
-                     int fstart, int fend, Color featureColour, int start,
-                     int end, int y1)
+
+  void renderFeature(Graphics g, SequenceI seq, int fstart, int fend,
+          Color featureColour, int start, int end, int y1)
   {
 
-    if ( ( (fstart <= end) && (fend >= start)))
+    if (((fstart <= end) && (fend >= start)))
     {
       if (fstart < start)
       { // fix for if the feature we have starts before the sequence start,
@@ -610,7 +750,8 @@ public class FeatureRenderer
 
         g.setColor(featureColour);
 
-        g.fillRect( (i - start) * av.charWidth, y1, av.charWidth, av.charHeight);
+        g.fillRect((i - start) * av.charWidth, y1, av.charWidth,
+                av.charHeight);
 
         if (!av.validCharWidth)
         {
@@ -619,25 +760,42 @@ public class FeatureRenderer
 
         g.setColor(Color.white);
         charOffset = (av.charWidth - fm.charWidth(s)) / 2;
-        g.drawString(String.valueOf(s),
-                     charOffset + (av.charWidth * (i - start)),
-                     (y1 + av.charHeight) - av.charHeight / 5); //pady = height / 5;
+        g.drawString(String.valueOf(s), charOffset
+                + (av.charWidth * (i - start)), (y1 + av.charHeight)
+                - av.charHeight / 5); // pady = height / 5;
 
       }
     }
   }
 
+  Hashtable minmax = null;
+
+  /**
+   * Called when alignment in associated view has new/modified features to
+   * discover and display.
+   * 
+   */
+  public void featuresAdded()
+  {
+    lastSeq = null;
+    findAllFeatures();
+  }
+
+  /**
+   * find all features on the alignment
+   */
   void findAllFeatures()
   {
-    jalview.schemes.UserColourScheme ucs = new
-        jalview.schemes.UserColourScheme();
+    jalview.schemes.UserColourScheme ucs = new jalview.schemes.UserColourScheme();
 
     av.featuresDisplayed = new Hashtable();
     Vector allfeatures = new Vector();
-    for (int i = 0; i < av.alignment.getHeight(); i++)
+    minmax = new Hashtable();
+    AlignmentI alignment = av.getAlignment();
+    for (int i = 0; i < alignment.getHeight(); i++)
     {
-      SequenceFeature[] features = av.alignment.getSequenceAt(i).
-          getSequenceFeatures();
+      SequenceFeature[] features = alignment.getSequenceAt(i)
+              .getSequenceFeatures();
 
       if (features == null)
       {
@@ -647,20 +805,52 @@ public class FeatureRenderer
       int index = 0;
       while (index < features.length)
       {
+        if (features[index].begin == 0 && features[index].end == 0)
+        {
+          index++;
+          continue;
+        }
         if (!av.featuresDisplayed.containsKey(features[index].getType()))
         {
           if (getColour(features[index].getType()) == null)
           {
             featureColours.put(features[index].getType(),
-                               ucs.createColourFromName(features[index].
-                getType()));
+                    ucs.createColourFromName(features[index].getType()));
           }
 
-          av.featuresDisplayed.put(features[index].getType(),
-                                   new Integer(getColour(features[index].
-              getType()).getRGB()));
+          av.featuresDisplayed.put(features[index].getType(), new Integer(
+                  getColour(features[index].getType()).getRGB()));
           allfeatures.addElement(features[index].getType());
         }
+        if (features[index].score != Float.NaN)
+        {
+          int nonpos = features[index].getBegin() >= 1 ? 0 : 1;
+          float[][] mm = (float[][]) minmax.get(features[index].getType());
+          if (mm == null)
+          {
+            mm = new float[][]
+            { null, null };
+            minmax.put(features[index].getType(), mm);
+          }
+          if (mm[nonpos] == null)
+          {
+            mm[nonpos] = new float[]
+            { features[index].score, features[index].score };
+
+          }
+          else
+          {
+            if (mm[nonpos][0] > features[index].score)
+            {
+              mm[nonpos][0] = features[index].score;
+            }
+            if (mm[nonpos][1] < features[index].score)
+            {
+              mm[nonpos][1] = features[index].score;
+            }
+          }
+        }
+
         index++;
       }
     }
@@ -675,24 +865,98 @@ public class FeatureRenderer
     }
   }
 
-  public Color getColour(String featureType)
+  /**
+   * get a feature style object for the given type string. Creates a
+   * java.awt.Color for a featureType with no existing colourscheme. TODO:
+   * replace return type with object implementing standard abstract colour/style
+   * interface
+   * 
+   * @param featureType
+   * @return java.awt.Color or GraduatedColor
+   */
+  public Object getFeatureStyle(String featureType)
   {
-    if (!featureColours.containsKey(featureType))
+    Object fc = featureColours.get(featureType);
+    if (fc == null)
     {
-      jalview.schemes.UserColourScheme ucs = new
-          jalview.schemes.UserColourScheme();
+      jalview.schemes.UserColourScheme ucs = new jalview.schemes.UserColourScheme();
       Color col = ucs.createColourFromName(featureType);
-      featureColours.put(featureType, col);
-      return col;
+      featureColours.put(featureType, fc = col);
+    }
+    return fc;
+  }
+
+  public Color getColour(String featureType)
+  {
+    Object fc = getFeatureStyle(featureType);
+
+    if (fc instanceof Color)
+    {
+      return (Color) fc;
+    }
+    else
+    {
+      if (fc instanceof GraduatedColor)
+      {
+        return ((GraduatedColor) fc).getMaxColor();
+      }
+    }
+    throw new Error(MessageManager.formatMessage("error.implementation_error_unrecognised_render_object_for_features_type", new String[]{fc.getClass().getCanonicalName(),featureType}));
+  }
+
+  /**
+   * 
+   * @param sequenceFeature
+   * @return true if feature is visible.
+   */
+  private boolean showFeature(SequenceFeature sequenceFeature)
+  {
+    Object fc = getFeatureStyle(sequenceFeature.type);
+    if (fc instanceof GraduatedColor)
+    {
+      return ((GraduatedColor) fc).isColored(sequenceFeature);
     }
     else
-      return (Color) featureColours.get(featureType);
+    {
+      return true;
+    }
   }
 
+  /**
+   * implement graduated colouring for features with scores
+   * 
+   * @param feature
+   * @return render colour for the given feature
+   */
+  public Color getColour(SequenceFeature feature)
+  {
+    Object fc = getFeatureStyle(feature.getType());
+    if (fc instanceof Color)
+    {
+      return (Color) fc;
+    }
+    else
+    {
+      if (fc instanceof GraduatedColor)
+      {
+        return ((GraduatedColor) fc).findColor(feature);
+      }
+    }
+    throw new Error("Implementation Error: Unrecognised render object "
+            + fc.getClass() + " for features of type " + feature.getType());
+  }
 
-  public void setColour(String featureType, Color col)
+  public void setColour(String featureType, Object col)
   {
-    featureColours.put(featureType, col);
+    // overwrite
+    // Color _col = (col instanceof Color) ? ((Color) col) : (col instanceof
+    // GraduatedColor) ? ((GraduatedColor) col).getMaxColor() : null;
+    // Object c = featureColours.get(featureType);
+    // if (c == null || c instanceof Color || (c instanceof GraduatedColor &&
+    // !((GraduatedColor)c).getMaxColor().equals(_col)))
+    {
+      featureColours.put(featureType, col);
+    }
   }
 
   public void setFeaturePriority(Object[][] data)
@@ -705,22 +969,11 @@ public class FeatureRenderer
       av.featuresDisplayed.clear();
     }
 
-   /* if (visibleNew)
-    {
-      if (av.featuresDisplayed != null)
-      {
-        av.featuresDisplayed.clear();
-      }
-      else
-      {
-        av.featuresDisplayed = new Hashtable();
-      }
-    }
-    if (data == null)
-    {
-      return;
-    }*/
-
+    /*
+     * if (visibleNew) { if (av.featuresDisplayed != null) {
+     * av.featuresDisplayed.clear(); } else { av.featuresDisplayed = new
+     * Hashtable(); } } if (data == null) { return; }
+     */
 
     renderOrder = new String[data.length];
 
@@ -729,147 +982,169 @@ public class FeatureRenderer
       for (int i = 0; i < data.length; i++)
       {
         String type = data[i][0].toString();
-        setColour(type, (Color) data[i][1]);
-        if ( ( (Boolean) data[i][2]).booleanValue())
+        setColour(type, data[i][1]);
+        if (((Boolean) data[i][2]).booleanValue())
         {
-          av.featuresDisplayed.put(type, new Integer(getColour(type).getRGB()));
+          av.featuresDisplayed.put(type, new Integer(getColour(type)
+                  .getRGB()));
         }
 
         renderOrder[data.length - i - 1] = type;
       }
     }
   }
+
   /**
-   * @return a simple list of feature group names or null 
+   * @return a simple list of feature group names or null
    */
   public String[] getGroups()
   {
     buildGroupHash();
-    if (featureGroups!=null)
+    if (featureGroups != null)
     {
       String[] gps = new String[featureGroups.size()];
       Enumeration gn = featureGroups.keys();
-      int i=0;
+      int i = 0;
       while (gn.hasMoreElements())
       {
-        gps[i++]  = (String) gn.nextElement();
+        gps[i++] = (String) gn.nextElement();
       }
       return gps;
     }
     return null;
   }
+
   /**
    * get visible or invisible groups
-   * @param visible true to return visible groups, false to return hidden ones.
+   * 
+   * @param visible
+   *          true to return visible groups, false to return hidden ones.
    * @return list of groups
    */
-  public String[] getGroups(boolean visible) 
+  public String[] getGroups(boolean visible)
   {
     buildGroupHash();
-    if (featureGroups!=null)
+    if (featureGroups != null)
     {
       Vector gp = new Vector();
-      
+
       Enumeration gn = featureGroups.keys();
       while (gn.hasMoreElements())
       {
         String nm = (String) gn.nextElement();
         Boolean state = (Boolean) featureGroups.get(nm);
-        if (state.booleanValue()==visible)
+        if (state.booleanValue() == visible)
         {
           gp.addElement(nm);
         }
       }
       String[] gps = new String[gp.size()];
       gp.copyInto(gps);
-      
-      int i=0;
+
+      int i = 0;
       while (gn.hasMoreElements())
       {
-        gps[i++]  = (String) gn.nextElement();
+        gps[i++] = (String) gn.nextElement();
       }
       return gps;
     }
     return null;
   }
+
   /**
    * set all feature groups in toset to be visible or invisible
-   * @param toset group names
-   * @param visible the state of the named groups to set
+   * 
+   * @param toset
+   *          group names
+   * @param visible
+   *          the state of the named groups to set
    */
   public void setGroupState(String[] toset, boolean visible)
   {
     buildGroupHash();
-    if (toset!=null && toset.length>0 && featureGroups!=null)
+    if (toset != null && toset.length > 0 && featureGroups != null)
     {
       boolean rdrw = false;
-      for (int i=0;i<toset.length; i++)
+      for (int i = 0; i < toset.length; i++)
       {
         Object st = featureGroups.get(toset[i]);
-        if (st!=null)
+        featureGroups.put(toset[i], new Boolean(visible));
+        if (st != null)
         {
-          featureGroups.put(toset[i], new Boolean(visible));
-          rdrw = rdrw || (visible!=((Boolean) st).booleanValue());
+          rdrw = rdrw || (visible != ((Boolean) st).booleanValue());
         }
       }
       if (rdrw)
       {
-        if (this.av!=null)
-          if (this.av.featureSettings!=null)
+        if (this.av != null)
+          if (this.av.featureSettings != null)
           {
             av.featureSettings.rebuildGroups();
             this.av.featureSettings.resetTable(true);
-          } else {
-            buildFeatureHash();
           }
-          if (av!=null)
+          else
           {
-            av.alignmentChanged(null);
+            buildFeatureHash();
           }
+        if (av != null)
+        {
+          av.alignmentChanged(null);
+        }
       }
     }
   }
+
+  ArrayList<String> hiddenGroups = new ArrayList<String>();
+
   /**
-   * analyse alignment for groups and hash tables
-   * (used to be embedded in FeatureSettings.setTableData)
+   * analyse alignment for groups and hash tables (used to be embedded in
+   * FeatureSettings.setTableData)
+   * 
    * @return true if features are on the alignment
    */
   public boolean buildGroupHash()
   {
-    boolean alignmentHasFeatures=false;
+    boolean alignmentHasFeatures = false;
     if (featureGroups == null)
     {
       featureGroups = new Hashtable();
     }
-    Vector allFeatures = new Vector();
-    Vector allGroups = new Vector();
+    hiddenGroups = new ArrayList<String>();
+    hiddenGroups.addAll(featureGroups.keySet());
+    ArrayList allFeatures = new ArrayList();
+    ArrayList allGroups = new ArrayList();
     SequenceFeature[] tmpfeatures;
     String group;
-    for (int i = 0; i < av.alignment.getHeight(); i++)
+    AlignmentI alignment = av.getAlignment();
+    for (int i = 0; i < alignment.getHeight(); i++)
     {
-      if (av.alignment.getSequenceAt(i).getSequenceFeatures() == null)
+      if (alignment.getSequenceAt(i).getSequenceFeatures() == null)
       {
         continue;
       }
 
       alignmentHasFeatures = true;
 
-      tmpfeatures = av.alignment.getSequenceAt(i).getSequenceFeatures();
+      tmpfeatures = alignment.getSequenceAt(i).getSequenceFeatures();
       int index = 0;
       while (index < tmpfeatures.length)
       {
         if (tmpfeatures[index].getFeatureGroup() != null)
         {
           group = tmpfeatures[index].featureGroup;
+          // Remove group from the hiddenGroup list
+          hiddenGroups.remove(group);
           if (!allGroups.contains(group))
           {
-            allGroups.addElement(group);
+            allGroups.add(group);
 
             boolean visible = true;
             if (featureGroups.containsKey(group))
             {
-              visible = ( (Boolean) featureGroups.get(group)).booleanValue();
-            } else {
+              visible = ((Boolean) featureGroups.get(group)).booleanValue();
+            }
+            else
+            {
               featureGroups.put(group, new Boolean(visible));
             }
           }
@@ -877,22 +1152,26 @@ public class FeatureRenderer
 
         if (!allFeatures.contains(tmpfeatures[index].getType()))
         {
-          allFeatures.addElement(tmpfeatures[index].getType());
+          allFeatures.add(tmpfeatures[index].getType());
         }
         index++;
       }
     }
-    
+
     return alignmentHasFeatures;
   }
+
   /**
-   * rebuild the featuresDisplayed and renderorder list based on the featureGroups hash and any existing display state
-   * and force a repaint if necessary
+   * rebuild the featuresDisplayed and renderorder list based on the
+   * featureGroups hash and any existing display state and force a repaint if
+   * necessary
+   * 
    * @return true if alignment has visible features
    */
-  public boolean buildFeatureHash() {
-    boolean alignmentHasFeatures=false;
-    if (featureGroups==null)
+  public boolean buildFeatureHash()
+  {
+    boolean alignmentHasFeatures = false;
+    if (featureGroups == null)
     {
       alignmentHasFeatures = buildGroupHash();
     }
@@ -902,16 +1181,17 @@ public class FeatureRenderer
     Vector allFeatures = new Vector();
     SequenceFeature[] tmpfeatures;
     String group;
-    for (int i = 0; i < av.alignment.getHeight(); i++)
+    AlignmentI alignment = av.getAlignment();
+    for (int i = 0; i < alignment.getHeight(); i++)
     {
-      if (av.alignment.getSequenceAt(i).getSequenceFeatures() == null)
+      if (alignment.getSequenceAt(i).getSequenceFeatures() == null)
       {
         continue;
       }
 
       alignmentHasFeatures = true;
 
-      tmpfeatures = av.alignment.getSequenceAt(i).getSequenceFeatures();
+      tmpfeatures = alignment.getSequenceAt(i).getSequenceFeatures();
       int index = 0;
       while (index < tmpfeatures.length)
       {
@@ -921,10 +1201,10 @@ public class FeatureRenderer
           group = tmpfeatures[index].featureGroup;
           if (featureGroups.containsKey(group))
           {
-            visible = ( (Boolean) featureGroups.get(group)).booleanValue();
+            visible = ((Boolean) featureGroups.get(group)).booleanValue();
           }
         }
-        
+
         if (visible && !allFeatures.contains(tmpfeatures[index].getType()))
         {
           allFeatures.addElement(tmpfeatures[index].getType());
@@ -932,44 +1212,67 @@ public class FeatureRenderer
         index++;
       }
     }
-    if (allFeatures.size()>0)
+    if (allFeatures.size() > 0)
     {
       String[] neworder = new String[allFeatures.size()];
-      int p=neworder.length-1;
-      for (int i=renderOrder.length-1; i>=0; i--)
+      int p = neworder.length - 1;
+      for (int i = renderOrder.length - 1; i >= 0; i--)
       {
         if (allFeatures.contains(renderOrder[i]))
         {
           neworder[p--] = renderOrder[i];
           allFeatures.removeElement(renderOrder[i]);
-        } else {
+        }
+        else
+        {
           av.featuresDisplayed.remove(renderOrder[i]);
         }
       }
-      for (int i=allFeatures.size()-1; i>0; i++)
+      for (int i = allFeatures.size() - 1; i > 0; i++)
       {
         Object e = allFeatures.elementAt(i);
-        if (e!=null)
+        if (e != null)
         {
           neworder[p--] = (String) e;
-          av.featuresDisplayed.put(e, getColour((String)e));
+          av.featuresDisplayed.put(e, getColour((String) e));
         }
       }
       renderOrder = neworder;
       return true;
     }
-    
+
     return alignmentHasFeatures;
   }
+
+  /**
+   * 
+   * @return the displayed feature type as an array of strings
+   */
+  protected String[] getDisplayedFeatureTypes()
+  {
+    String[] typ = null;
+    synchronized (renderOrder)
+    {
+      typ = new String[renderOrder.length];
+      System.arraycopy(renderOrder, 0, typ, 0, typ.length);
+      for (int i = 0; i < typ.length; i++)
+      {
+        if (av.featuresDisplayed.get(typ[i]) == null)
+        {
+          typ[i] = null;
+        }
+      }
+    }
+    return typ;
+  }
 }
 
 class TransparencySetter
 {
   void setTransparency(Graphics g, float value)
   {
-     Graphics2D g2 = (Graphics2D) g;
-     g2.setComposite(
-        AlphaComposite.getInstance(
-             AlphaComposite.SRC_OVER, value));
+    Graphics2D g2 = (Graphics2D) g;
+    g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
+            value));
   }
 }