featuresAdded method introduced for consistency with application for notifying gui...
[jalview.git] / src / jalview / appletgui / FeatureRenderer.java
index c71a3cc..adfa518 100755 (executable)
-/*\r
- * Jalview - A Sequence Alignment Editor and Viewer\r
- * Copyright (C) 2005 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle\r
- *\r
- * This program is free software; you can redistribute it and/or\r
- * modify it under the terms of the GNU General Public License\r
- * as published by the Free Software Foundation; either version 2\r
- * of the License, or (at your option) any later version.\r
- *\r
- * This program is distributed in the hope that it will be useful,\r
- * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
- * GNU General Public License for more details.\r
- *\r
- * You should have received a copy of the GNU General Public License\r
- * along with this program; if not, write to the Free Software\r
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA\r
- */\r
-package jalview.appletgui;\r
-\r
-import jalview.datamodel.*;\r
-\r
-import java.awt.*;\r
-\r
-import java.util.*;\r
-\r
-/**\r
- * DOCUMENT ME!\r
- *\r
- * @author $author$\r
- * @version $Revision$\r
- */\r
-public class FeatureRenderer\r
-{\r
-    AlignViewport av;\r
-\r
-\r
-    // A higher level for grouping features of a\r
-    // particular type\r
-    Hashtable featureGroups = null;\r
-\r
-    // This is actually an Integer held in the hashtable,\r
-    // Retrieved using the key feature type\r
-    Object currentColour;\r
-\r
-    String [] renderOrder;\r
-\r
-    FontMetrics fm;\r
-    int charOffset;\r
-\r
-    /**\r
-     * Creates a new FeatureRenderer object.\r
-     *\r
-     * @param av DOCUMENT ME!\r
-     */\r
-    public FeatureRenderer(AlignViewport av)\r
-    {\r
-        this.av = av;\r
-        initColours();\r
-    }\r
-\r
-\r
-    public Color findFeatureColour(Color initialCol, SequenceI seq, int i)\r
-    {\r
-      if(!av.showSequenceFeatures)\r
-        return initialCol;\r
-\r
-        lastSequence = seq;\r
-        sequenceFeatures = lastSequence.getSequenceFeatures();\r
-        if(sequenceFeatures==null)\r
-          return initialCol;\r
-\r
-        sfSize = sequenceFeatures.length;\r
-\r
-      if(jalview.util.Comparison.isGap(lastSequence.getCharAt(i)))\r
-        return Color.white;\r
-\r
-      currentColour = null;\r
-\r
-      drawSequence(null, lastSequence, lastSequence.findPosition(i), -1,-1, -1, -1);\r
-\r
-      if(currentColour==null)\r
-        return initialCol;\r
-\r
-      return new Color( ((Integer)currentColour).intValue() );\r
-    }\r
-\r
-    /**\r
-     * This is used by the Molecule Viewer to get the accurate colour\r
-     * of the rendered sequence\r
-     */\r
-    boolean overview = false;\r
-\r
-    int white = Color.white.getRGB();\r
-    public int findFeatureColour(int initialCol, int seqIndex, int column)\r
-    {\r
-      if(!av.showSequenceFeatures)\r
-        return initialCol;\r
-\r
-      if(seqIndex!=lastSequenceIndex)\r
-      {\r
-        lastSequence = av.alignment.getSequenceAt(seqIndex);\r
-        lastSequenceIndex = seqIndex;\r
-        sequenceFeatures = lastSequence.getSequenceFeatures();\r
-        if(sequenceFeatures==null)\r
-          return initialCol;\r
-\r
-        sfSize = sequenceFeatures.length;\r
-      }\r
-\r
-\r
-      if(jalview.util.Comparison.isGap(lastSequence.getCharAt(column)))\r
-        return Color.white.getRGB();\r
-\r
-      currentColour = null;\r
-\r
-      drawSequence(null, lastSequence, lastSequence.findPosition(column), -1,-1, -1, -1);\r
-\r
-      if(currentColour==null)\r
-        return initialCol;\r
-\r
-      return  ((Integer)currentColour).intValue();\r
-    }\r
-\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param g DOCUMENT ME!\r
-     * @param seq DOCUMENT ME!\r
-     * @param sg DOCUMENT ME!\r
-     * @param start DOCUMENT ME!\r
-     * @param end DOCUMENT ME!\r
-     * @param x1 DOCUMENT ME!\r
-     * @param y1 DOCUMENT ME!\r
-     * @param width DOCUMENT ME!\r
-     * @param height DOCUMENT ME!\r
-     */\r
-   // String type;\r
-   // SequenceFeature sf;\r
-    int lastSequenceIndex=-1;\r
-    SequenceI lastSequence;\r
-    SequenceFeature [] sequenceFeatures;\r
-    int sfSize, sfindex, spos, epos;\r
-\r
-    public void drawSequence(Graphics g, SequenceI seq,\r
-                             int start, int end, int y1, int width, int height)\r
-    {\r
-      if (   seq.getSequenceFeatures() == null\r
-          || seq.getSequenceFeatures().length==0)\r
-        return;\r
-\r
-\r
-      if (av.featuresDisplayed == null || renderOrder==null)\r
-       {\r
-         findAllFeatures();\r
-         if(av.featuresDisplayed.size()<1)\r
-           return;\r
-\r
-         sequenceFeatures = seq.getSequenceFeatures();\r
-         sfSize = sequenceFeatures.length;\r
-       }\r
-       if(lastSequence==null || seq!=lastSequence)\r
-      {\r
-        lastSequence = seq;\r
-        sequenceFeatures = seq.getSequenceFeatures();\r
-        sfSize = sequenceFeatures.length;\r
-      }\r
-      if(!overview)\r
-      {\r
-        spos = lastSequence.findPosition(start);\r
-        epos = lastSequence.findPosition(end);\r
-        if(g!=null)\r
-          fm = g.getFontMetrics();\r
-      }\r
-      String type;\r
-      for(int renderIndex=0; renderIndex<renderOrder.length; renderIndex++)\r
-       {\r
-        type =  renderOrder[renderIndex];\r
-        if(!av.featuresDisplayed.containsKey(type))\r
-          continue;\r
-\r
-        // loop through all features in sequence to find\r
-        // current feature to render\r
-        for (sfindex = 0; sfindex < sfSize; sfindex++)\r
-        {\r
-          if (!sequenceFeatures[sfindex].type.equals(type))\r
-            continue;\r
-\r
-          if (featureGroups != null\r
-              && sequenceFeatures[sfindex].featureGroup != null\r
-              &&\r
-              featureGroups.containsKey(sequenceFeatures[sfindex].featureGroup)\r
-              &&\r
-              ! ( (Boolean) featureGroups.get(sequenceFeatures[sfindex].featureGroup)).\r
-              booleanValue())\r
-          {\r
-            continue;\r
-          }\r
-\r
-          if (!overview && (sequenceFeatures[sfindex].getBegin() > epos\r
-                            || sequenceFeatures[sfindex].getEnd() < spos))\r
-            continue;\r
-\r
-          if (overview)\r
-          {\r
-            if (sequenceFeatures[sfindex].begin <= start &&\r
-                sequenceFeatures[sfindex].end >= start)\r
-            {\r
-              currentColour = av.featuresDisplayed.get(sequenceFeatures[sfindex].\r
-                  type);\r
-            }\r
-\r
-          }\r
-          else if (sequenceFeatures[sfindex].type.equals("disulfide bond"))\r
-          {\r
-\r
-            renderFeature(g, seq,\r
-                          seq.findIndex(sequenceFeatures[sfindex].begin) - 1,\r
-                          seq.findIndex(sequenceFeatures[sfindex].begin) - 1,\r
-                          new Color( ( (Integer) av.featuresDisplayed.get(\r
-                sequenceFeatures[sfindex].type)).intValue()),\r
-                          start, end, y1, width, height);\r
-            renderFeature(g, seq,\r
-                          seq.findIndex(sequenceFeatures[sfindex].end) - 1,\r
-                          seq.findIndex(sequenceFeatures[sfindex].end) - 1,\r
-                          new Color( ( (Integer) av.featuresDisplayed.get(\r
-                sequenceFeatures[sfindex].type)).intValue()),\r
-                          start, end, y1, width, height);\r
-\r
-          }\r
-          else\r
-            renderFeature(g, seq,\r
-                          seq.findIndex(sequenceFeatures[sfindex].begin) - 1,\r
-                          seq.findIndex(sequenceFeatures[sfindex].end) - 1,\r
-                          getColour(sequenceFeatures[sfindex].type),\r
-                          start, end, y1, width, height);\r
-\r
-        }\r
-      }\r
-    }\r
-\r
-\r
-    char s;\r
-    int i;\r
-    void renderFeature(Graphics g, SequenceI seq,\r
-                       int fstart, int fend, Color featureColour, int start, int end,  int y1, int width, int height)\r
-    {\r
-\r
-      if (((fstart <= end) && (fend >= start)))\r
-      {\r
-        if (fstart < start)\r
-        { // fix for if the feature we have starts before the sequence start,\r
-          fstart = start; // but the feature end is still valid!!\r
-        }\r
-\r
-        if (fend >= end)\r
-        {\r
-          fend = end;\r
-        }\r
-\r
-          for (i = fstart; i <= fend; i++)\r
-          {\r
-            s = seq.getSequence().charAt(i);\r
-\r
-            if (jalview.util.Comparison.isGap(s))\r
-            {\r
-              continue;\r
-            }\r
-\r
-            g.setColor(featureColour);\r
-\r
-            g.fillRect( (i - start) * width, y1, width, height);\r
-\r
-            g.setColor(Color.white);\r
-            charOffset = (width - fm.charWidth(s)) / 2;\r
-            g.drawString(String.valueOf(s),\r
-                         charOffset + (width * (i - start)),\r
-                         (y1 + height) - height / 5); //pady = height / 5;\r
-\r
-          }\r
-      }\r
-    }\r
-\r
-    void findAllFeatures()\r
-    {\r
-      av.featuresDisplayed = new Hashtable();\r
-      Vector allfeatures = new Vector();\r
-      for (int i = 0; i < av.alignment.getHeight(); i++)\r
-      {\r
-        SequenceFeature [] features = av.alignment.getSequenceAt(i).getSequenceFeatures();\r
-\r
-        if (features == null)\r
-          continue;\r
-\r
-        int index = 0;\r
-        while (index < features.length)\r
-        {\r
-          if (!av.featuresDisplayed.containsKey(features[index].getType()))\r
-          {\r
-            av.featuresDisplayed.put(features[index].getType(),\r
-                                  new Integer( getColour(features[index].getType()).getRGB()) );\r
-            allfeatures.addElement(features[index].getType());\r
-          }\r
-          index++;\r
-        }\r
-      }\r
-\r
-      renderOrder = new String[allfeatures.size()];\r
-      Enumeration en = allfeatures.elements();\r
-      int i = allfeatures.size()-1;\r
-      while(en.hasMoreElements())\r
-      {\r
-        renderOrder[i] = en.nextElement().toString();\r
-        i--;\r
-      }\r
-    }\r
-\r
-    public Color getColour(String featureType)\r
-    {\r
-      return (Color)featureColours.get(featureType);\r
-    }\r
-\r
-    public void addNewFeature(String name, Color col)\r
-    {\r
-\r
-      setColour(name, col);\r
-      if(av.featuresDisplayed==null)\r
-        av.featuresDisplayed = new Hashtable();\r
-\r
-\r
-      av.featuresDisplayed.put(name, "NOGROUP");\r
-    }\r
-\r
-    public void setColour(String featureType, Color col)\r
-    {\r
-      featureColours.put(featureType, col);\r
-    }\r
-\r
-    public void setFeaturePriority(Object [][] data)\r
-    {\r
-        // The feature table will display high priority\r
-        // features at the top, but theses are the ones\r
-        // we need to render last, so invert the data\r
-        if(av.featuresDisplayed!=null)\r
-          av.featuresDisplayed.clear();\r
-\r
-        renderOrder = new String[data.length];\r
-\r
-        if (data.length > 0)\r
-          for (int i = 0; i < data.length; i++)\r
-          {\r
-            String type = data[i][0].toString();\r
-            setColour(type, (Color) data[i][1]);\r
-            if ( ( (Boolean) data[i][2]).booleanValue())\r
-            {\r
-              av.featuresDisplayed.put(type, new Integer(getColour(type).getRGB()));\r
-            }\r
-\r
-            renderOrder[data.length - i - 1] = type;\r
-          }\r
-    }\r
-\r
-    Hashtable featureColours = new Hashtable();\r
-    void initColours()\r
-    {\r
-      featureColours.put("active site", new Color(255, 75, 0));\r
-      featureColours.put("binding site", new Color(245, 85, 0));\r
-      featureColours.put("calcium-binding region", new Color(235, 95, 0));\r
-      featureColours.put("chain", new Color(225, 105, 0));\r
-      featureColours.put("coiled-coil region", new Color(215, 115, 0));\r
-      featureColours.put("compositionally biased region", new Color(205, 125, 0));\r
-      featureColours.put("cross-link", new Color(195, 135, 0));\r
-      featureColours.put("disulfide bond", new Color(185, 145, 0));\r
-      featureColours.put("DNA-binding region", new Color(175, 155, 0));\r
-      featureColours.put("domain", new Color(165, 165, 0));\r
-      featureColours.put("glycosylation site", new Color(155, 175, 0));\r
-      featureColours.put("helix", new Color(145, 185, 0));\r
-      featureColours.put("initiator methionine", new Color(135, 195, 5));\r
-      featureColours.put("lipid moiety-binding region", new Color(125, 205, 15));\r
-      featureColours.put("metal ion-binding site", new Color(115, 215, 25));\r
-      featureColours.put("modified residue", new Color(105, 225, 35));\r
-      featureColours.put("mutagenesis site", new Color(95, 235, 45));\r
-      featureColours.put("non-consecutive residues", new Color(85, 245, 55));\r
-      featureColours.put("non-terminal residue", new Color(75, 255, 65));\r
-      featureColours.put("nucleotide phosphate-binding region",\r
-                         new Color(65, 245, 75));\r
-      featureColours.put("peptide", new Color(55, 235, 85));\r
-      featureColours.put("propeptide", new Color(45, 225, 95));\r
-      featureColours.put("region of interest", new Color(35, 215, 105));\r
-      featureColours.put("repeat", new Color(25, 205, 115));\r
-      featureColours.put("selenocysteine", new Color(15, 195, 125));\r
-      featureColours.put("sequence conflict", new Color(5, 185, 135));\r
-      featureColours.put("sequence variant", new Color(0, 175, 145));\r
-      featureColours.put("short sequence motif", new Color(0, 165, 155));\r
-      featureColours.put("signal peptide", new Color(0, 155, 165));\r
-      featureColours.put("site", new Color(0, 145, 175));\r
-      featureColours.put("splice variant", new Color(0, 135, 185));\r
-      featureColours.put("strand", new Color(0, 125, 195));\r
-      featureColours.put("topological domain", new Color(0, 115, 205));\r
-      featureColours.put("transit peptide", new Color(0, 105, 215));\r
-      featureColours.put("transmembrane region", new Color(0, 95, 225));\r
-      featureColours.put("turn", new Color(0, 85, 235));\r
-      featureColours.put("unsure residue", new Color(0, 75, 245));\r
-      featureColours.put("zinc finger region", new Color(0, 65, 255));\r
-    }\r
-\r
-}\r
-\r
-\r
-\r
+/*
+ * 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
+ * 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.
+ *
+ * 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
+ */
+package jalview.appletgui;
+
+import java.util.*;
+
+import java.awt.*;
+
+import jalview.datamodel.*;
+
+/**
+ * DOCUMENT ME!
+ *
+ * @author $author$
+ * @version $Revision$
+ */
+public class FeatureRenderer
+{
+  AlignViewport av;
+
+  Hashtable featureColours = new Hashtable();
+
+  // A higher level for grouping features of a
+  // particular type
+  Hashtable featureGroups = null;
+
+  // Holds web links for feature groups and feature types
+  // in the form label|link
+  Hashtable featureLinks = null;
+
+  // This is actually an Integer held in the hashtable,
+  // Retrieved using the key feature type
+  Object currentColour;
+
+  String[] renderOrder;
+
+  FontMetrics fm;
+  int charOffset;
+
+  float transparency = 1f;
+
+  TransparencySetter transparencySetter = null;
+
+  /**
+   * Creates a new FeatureRenderer object.
+   *
+   * @param av DOCUMENT ME!
+   */
+  public FeatureRenderer(AlignViewport av)
+  {
+    this.av = av;
+
+    if (!System.getProperty("java.version").startsWith("1.1"))
+    {
+      transparencySetter = new TransparencySetter();
+    }
+  }
+
+  public void transferSettings(FeatureRenderer fr)
+  {
+    renderOrder = fr.renderOrder;
+    featureGroups = fr.featureGroups;
+    featureColours = fr.featureColours;
+    transparency = fr.transparency;
+  }
+
+  public Color findFeatureColour(Color initialCol, SequenceI seq, int i)
+  {
+    overview = true;
+    if (!av.showSequenceFeatures)
+    {
+      return initialCol;
+    }
+
+    lastSequence = seq;
+    sequenceFeatures = lastSequence.getSequenceFeatures();
+    if (sequenceFeatures == null)
+    {
+      return initialCol;
+    }
+
+    sfSize = sequenceFeatures.length;
+
+    if (jalview.util.Comparison.isGap(lastSequence.getCharAt(i)))
+    {
+      return Color.white;
+    }
+
+    currentColour = null;
+
+    drawSequence(null, lastSequence, lastSequence.findPosition(i), -1, -1);
+
+    if (currentColour == null)
+    {
+      return initialCol;
+    }
+
+    return new Color( ( (Integer) currentColour).intValue());
+  }
+
+  /**
+   * This is used by the Molecule Viewer to get the accurate colour
+   * of the rendered sequence
+   */
+  boolean overview = false;
+
+  int white = Color.white.getRGB();
+  public int findFeatureColour(int initialCol, int seqIndex, int column)
+  {
+    if (!av.showSequenceFeatures)
+    {
+      return initialCol;
+    }
+
+    if (seqIndex != lastSequenceIndex)
+    {
+      lastSequence = av.alignment.getSequenceAt(seqIndex);
+      lastSequenceIndex = seqIndex;
+      sequenceFeatures = lastSequence.getSequenceFeatures();
+      if (sequenceFeatures == null)
+      {
+        return initialCol;
+      }
+
+      sfSize = sequenceFeatures.length;
+    }
+
+    if (jalview.util.Comparison.isGap(lastSequence.getCharAt(column)))
+    {
+      return Color.white.getRGB();
+    }
+
+    currentColour = null;
+
+    drawSequence(null, lastSequence, lastSequence.findPosition(column), -1, -1);
+
+    if (currentColour == null)
+    {
+      return initialCol;
+    }
+
+    return ( (Integer) currentColour).intValue();
+  }
+
+  /**
+   * 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;
+  int lastSequenceIndex = -1;
+  SequenceI lastSequence;
+  SequenceFeature[] sequenceFeatures;
+  int sfSize, sfindex, spos, epos;
+
+  public void drawSequence(Graphics g, SequenceI seq,
+                           int start, int end, int y1)
+  {
+    if (seq.getSequenceFeatures() == null
+        || seq.getSequenceFeatures().length == 0)
+    {
+      return;
+    }
+
+    if (transparencySetter != null && g != null)
+    {
+      transparencySetter.setTransparency(g, transparency);
+    }
+    
+    if (lastSequence == null || seq != lastSequence || sequenceFeatures!=seq.getSequenceFeatures())
+    {
+      lastSequence = seq;
+      sequenceFeatures = seq.getSequenceFeatures();
+      sfSize = sequenceFeatures.length;
+    }
+
+    if (av.featuresDisplayed == null || renderOrder == null)
+    {
+      findAllFeatures();
+      if (av.featuresDisplayed.size() < 1)
+      {
+        return;
+      }
+
+      sequenceFeatures = seq.getSequenceFeatures();
+      sfSize = sequenceFeatures.length;
+    }
+    if (!overview)
+    {
+      spos = lastSequence.findPosition(start);
+      epos = lastSequence.findPosition(end);
+      if (g != null)
+      {
+        fm = g.getFontMetrics();
+      }
+    }
+    String type;
+    for (int renderIndex = 0; renderIndex < renderOrder.length; renderIndex++)
+    {
+      type = renderOrder[renderIndex];
+      if (!av.featuresDisplayed.containsKey(type))
+      {
+        continue;
+      }
+
+      // loop through all features in sequence to find
+      // current feature to render
+      for (sfindex = 0; sfindex < sfSize; sfindex++)
+      {
+        if (!sequenceFeatures[sfindex].type.equals(type))
+        {
+          continue;
+        }
+
+        if (featureGroups != null
+            && 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))
+        {
+          continue;
+        }
+
+        if (overview)
+        {
+          if (sequenceFeatures[sfindex].begin <= start &&
+              sequenceFeatures[sfindex].end >= start)
+          {
+            currentColour = av.featuresDisplayed.get(sequenceFeatures[sfindex].
+                type);
+          }
+
+        }
+        else if (sequenceFeatures[sfindex].type.equals("disulfide bond"))
+        {
+
+          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);
+          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);
+
+        }
+        else
+        {
+          renderFeature(g, seq,
+                        seq.findIndex(sequenceFeatures[sfindex].begin) - 1,
+                        seq.findIndex(sequenceFeatures[sfindex].end) - 1,
+                        getColour(sequenceFeatures[sfindex].type),
+                        start, end, y1);
+        }
+
+      }
+    }
+
+    if (transparencySetter != null && g != null)
+    {
+      transparencySetter.setTransparency(g, 1.0f);
+    }
+  }
+
+  char s;
+  int i;
+  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 < start)
+      { // fix for if the feature we have starts before the sequence start,
+        fstart = start; // but the feature end is still valid!!
+      }
+
+      if (fend >= end)
+      {
+        fend = end;
+      }
+
+      for (i = fstart; i <= fend; i++)
+      {
+        s = seq.getCharAt(i);
+
+        if (jalview.util.Comparison.isGap(s))
+        {
+          continue;
+        }
+
+        g.setColor(featureColour);
+
+        g.fillRect( (i - start) * av.charWidth, y1, av.charWidth, av.charHeight);
+
+        if (!av.validCharWidth)
+        {
+          continue;
+        }
+
+        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;
+
+      }
+    }
+  }
+
+  void findAllFeatures()
+  {
+    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++)
+    {
+      SequenceFeature[] features = av.alignment.getSequenceAt(i).
+          getSequenceFeatures();
+
+      if (features == null)
+      {
+        continue;
+      }
+
+      int index = 0;
+      while (index < features.length)
+      {
+        if (!av.featuresDisplayed.containsKey(features[index].getType()))
+        {
+          if (getColour(features[index].getType()) == null)
+          {
+            featureColours.put(features[index].getType(),
+                               ucs.createColourFromName(features[index].
+                getType()));
+          }
+
+          av.featuresDisplayed.put(features[index].getType(),
+                                   new Integer(getColour(features[index].
+              getType()).getRGB()));
+          allfeatures.addElement(features[index].getType());
+        }
+        index++;
+      }
+    }
+
+    renderOrder = new String[allfeatures.size()];
+    Enumeration en = allfeatures.elements();
+    int i = allfeatures.size() - 1;
+    while (en.hasMoreElements())
+    {
+      renderOrder[i] = en.nextElement().toString();
+      i--;
+    }
+  }
+
+  public Color getColour(String featureType)
+  {
+    return (Color) featureColours.get(featureType);
+  }
+
+  public void addNewFeature(String name, Color col)
+  {
+
+    setColour(name, col);
+    if (av.featuresDisplayed == null)
+    {
+      av.featuresDisplayed = new Hashtable();
+    }
+
+    av.featuresDisplayed.put(name, "NOGROUP");
+  }
+
+  public void setColour(String featureType, Color col)
+  {
+    featureColours.put(featureType, col);
+  }
+
+  public void setFeaturePriority(Object[][] data)
+  {
+    // The feature table will display high priority
+    // features at the top, but theses are the ones
+    // we need to render last, so invert the data
+    if (av.featuresDisplayed != null)
+    {
+      av.featuresDisplayed.clear();
+    }
+
+    renderOrder = new String[data.length];
+
+    if (data.length > 0)
+    {
+      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())
+        {
+          av.featuresDisplayed.put(type, new Integer(getColour(type).getRGB()));
+        }
+
+        renderOrder[data.length - i - 1] = type;
+      }
+    }
+  }
+
+  public void featuresAdded()
+  {
+    findAllFeatures();
+  }
+}
+
+class TransparencySetter
+{
+  void setTransparency(Graphics g, float value)
+  {
+     Graphics2D g2 = (Graphics2D) g;
+     g2.setComposite(
+        AlphaComposite.getInstance(
+             AlphaComposite.SRC_OVER, value));
+  }
+}