JAL-1355 (basic i18n support)
[jalview.git] / src / jalview / gui / AnnotationPanel.java
index c94a5a8..92cd407 100755 (executable)
-package jalview.gui;\r
-\r
-import jalview.datamodel.*;\r
-\r
-import javax.swing.*;\r
-import java.awt.*;\r
-import java.awt.event.*;\r
-import java.util.*;\r
-import java.awt.image.*;\r
-\r
-public class AnnotationPanel extends JPanel implements MouseListener, MouseMotionListener, ActionListener, AdjustmentListener\r
-{\r
-  AlignViewport av;\r
-  AlignmentPanel ap;\r
-  int activeRow =-1;\r
-\r
-  ArrayList activeRes;\r
-  static String HELIX ="Helix";\r
-  static String SHEET ="Sheet";\r
-  static String LABEL ="Label";\r
-  static String REMOVE="Remove Annotation";\r
-  static String COLOUR="Colour";\r
-  static Color HELIX_COLOUR = Color.red.darker();\r
-  static Color SHEET_COLOUR = Color.green.darker().darker();\r
-\r
-\r
-  BufferedImage image;\r
-  Graphics2D gg;\r
-  FontMetrics fm;\r
-  int imgWidth=0;\r
-\r
-\r
-\r
-\r
-  public AnnotationPanel(AlignmentPanel ap)\r
-  {\r
-    this.ap = ap;\r
-    av = ap.av;\r
-    this.setLayout(null);\r
-    addMouseListener(this);\r
-    addMouseMotionListener(this);\r
-    adjustPanelHeight();\r
-\r
-\r
-    ap.annotationScroller.getVerticalScrollBar().addAdjustmentListener( this );\r
-  }\r
-\r
-  public void adjustmentValueChanged(AdjustmentEvent evt)\r
-  {\r
-    ap.alabels.setScrollOffset( -evt.getValue() );\r
-  }\r
-\r
-  public void adjustPanelHeight()\r
-  {\r
-    // setHeight of panels\r
-    AlignmentAnnotation[] aa = av.alignment.getAlignmentAnnotation();\r
-    int height = 0;\r
-    if(aa!=null)\r
-    for (int i = 0; i < aa.length; i++)\r
-    {\r
-      if(!aa[i].visible)\r
-        continue;\r
-\r
-      aa[i].height = 0;\r
-\r
-      if(aa[i].hasText)\r
-        aa[i].height += av.charHeight;\r
-      if (aa[i].hasIcons)\r
-        aa[i].height += 16;\r
-\r
-      if (aa[i].isGraph)\r
-        aa[i].height += 50;\r
-\r
-      if(aa[i].height==0)\r
-        aa[i].height = 20;\r
-      height += aa[i].height;\r
-    }\r
-  else height=20;\r
-    this.setPreferredSize(new Dimension(1, height));\r
-\r
-  }\r
-\r
-  public void addEditableColumn(int i)\r
-  {\r
-    if(activeRow==-1)\r
-    {\r
-      AlignmentAnnotation [] aa = av.alignment.getAlignmentAnnotation();\r
-      for(int j=0; j<aa.length; j++)\r
-        if(aa[j].editable)\r
-        {\r
-          activeRow = j;\r
-          break;\r
-        }\r
-    }\r
-\r
-    if(activeRes==null)\r
-    {\r
-      activeRes = new ArrayList();\r
-      activeRes.add(String.valueOf(i));\r
-      return;\r
-    }\r
-\r
-    activeRes.add(String.valueOf(i));\r
-\r
-  }\r
-\r
-\r
-  public void actionPerformed(ActionEvent evt)\r
-  {\r
-\r
-    AlignmentAnnotation [] aa = av.alignment.getAlignmentAnnotation();\r
-    Annotation [] anot = aa[activeRow].annotations;\r
-\r
-    if(evt.getActionCommand().equals(REMOVE))\r
-    {\r
-      for(int i=0; i<activeRes.size(); i++)\r
-      {\r
-        anot[Integer.parseInt(activeRes.get(i).toString())] = null;\r
-        anot[Integer.parseInt(activeRes.get(i).toString())] = null;\r
-      }\r
-    }\r
-    else if(evt.getActionCommand().equals(LABEL))\r
-    {\r
-      String label = JOptionPane.showInputDialog(this, "Enter Label ", "Enter label", JOptionPane.QUESTION_MESSAGE );\r
-      if(label==null)\r
-        label = "";\r
-\r
-      if(label.length()>0 && !aa[activeRow].hasText)\r
-       aa[activeRow].hasText = true;\r
-\r
-      for(int i=0; i<activeRes.size(); i++)\r
-      {\r
-        int index = Integer.parseInt(activeRes.get(i).toString());\r
-        if(anot[index]==null)\r
-          anot[index] = new Annotation(label, "", ' ',0);\r
-        anot[index].displayCharacter = label;\r
-      }\r
-    }\r
-    else if(evt.getActionCommand().equals(COLOUR))\r
-    {\r
-     Color col = JColorChooser.showDialog(this, "Choose foreground colour", Color.black);\r
-     for (int i = 0; i < activeRes.size(); i++)\r
-     {\r
-       int index = Integer.parseInt(activeRes.get(i).toString());\r
-       if (anot[index] == null)\r
-         anot[index] = new Annotation("", "", ' ', 0);\r
-       anot[index].colour = col;\r
-     }\r
-    }\r
-    else // HELIX OR SHEET\r
-    {\r
-    char type = 0;\r
-    String symbol = "\u03B1";\r
-    if(evt.getActionCommand().equals(HELIX))\r
-       type = 'H';\r
-    else if(evt.getActionCommand().equals(SHEET))\r
-    {\r
-      type = 'E';\r
-      symbol = "\u03B2";\r
-    }\r
-\r
-    if(!aa[activeRow].hasIcons)\r
-      aa[activeRow].hasIcons = true;\r
-\r
-\r
-    String label = JOptionPane.showInputDialog("Enter a label for the structure?", symbol );\r
-    if(label==null)\r
-       label="";\r
-\r
-    if(label.length()>0 && !aa[activeRow].hasText)\r
-       aa[activeRow].hasText = true;\r
-\r
-    for(int i=0; i<activeRes.size(); i++)\r
-    {\r
-      int index = Integer.parseInt(activeRes.get(i).toString());\r
-      if (anot[index] == null)\r
-      {\r
-        anot[index] = new Annotation(label, "", type, 0);\r
-      }\r
-\r
-        anot[ index ].secondaryStructure = type;\r
-        anot[ index ].displayCharacter = label;\r
-    }\r
-    }\r
-\r
-    adjustPanelHeight();\r
-    activeRes = null;\r
-    repaint();\r
-    return;\r
-\r
-\r
-  }\r
-\r
-  public void mousePressed(MouseEvent evt)\r
-  {\r
-    if (SwingUtilities.isRightMouseButton(evt))\r
-    {\r
-      if(activeRes==null)\r
-        return;\r
-\r
-      JPopupMenu pop = new JPopupMenu("Structure type");\r
-      JMenuItem item = new JMenuItem(HELIX);\r
-      item.addActionListener(this);\r
-      pop.add(item);\r
-      item = new JMenuItem(SHEET);\r
-      item.addActionListener(this);\r
-      pop.add(item);\r
-      item = new JMenuItem(LABEL);\r
-      item.addActionListener(this);\r
-      pop.add(item);\r
-      item = new JMenuItem(COLOUR);\r
-      item.addActionListener(this);\r
-      pop.add(item);\r
-      item = new JMenuItem(REMOVE);\r
-      item.addActionListener(this);\r
-      pop.add(item);\r
-      pop.show(this, evt.getX(), evt.getY());\r
-      return;\r
-    }\r
-\r
-\r
-    AlignmentAnnotation [] aa = av.alignment.getAlignmentAnnotation();\r
-    if(aa==null)\r
-      return;\r
-\r
-    int height = 0;\r
-    activeRow = -1;\r
-    for(int i=0; i<aa.length; i++)\r
-    {\r
-      height+= aa[i].height;\r
-\r
-      if(evt.getY()<height)\r
-      {\r
-        if(!aa[i].editable)\r
-        {\r
-          activeRes = null;\r
-          continue;\r
-        }\r
-\r
-        activeRow = i;\r
-        break;\r
-      }\r
-    }\r
-\r
-\r
-    int res = evt.getX() / av.getCharWidth() + av.getStartRes();\r
-\r
-    if(evt.isControlDown() || evt.isAltDown())\r
-      addEditableColumn(res);\r
-\r
-    else if(evt.isShiftDown())\r
-    {\r
-\r
-      if(activeRes==null)\r
-        activeRes=new ArrayList();\r
-      else\r
-      {\r
-          int start =  Integer.parseInt( activeRes.get( activeRes.size()-1 ).toString() );\r
-          int end = res;\r
-          if(end<start)\r
-          {\r
-            int temp = end;\r
-            end = start;\r
-            start = temp;\r
-          }\r
-          for(int n=start; n<=end; n++)\r
-            addEditableColumn(n);\r
-\r
-      }\r
-    }\r
-    else\r
-    {\r
-        activeRes = new ArrayList();\r
-        activeRes.add( String.valueOf(res) );\r
-    }\r
-\r
-    repaint();\r
-\r
-  }\r
-  public void mouseReleased(MouseEvent evt)\r
-  {  }\r
-  public void mouseEntered(MouseEvent evt)\r
-  {  }\r
-  public void mouseExited(MouseEvent evt)\r
-  {  }\r
-  public void mouseDragged(MouseEvent evt)\r
-  {  }\r
-  public void mouseMoved(MouseEvent evt)\r
-  {\r
-    ToolTipManager.sharedInstance().registerComponent(this);\r
-    AlignmentAnnotation [] aa = av.alignment.getAlignmentAnnotation();\r
-    if(aa==null)\r
-      return;\r
-\r
-    int row = -1;\r
-    int height=0;\r
-    for(int i=0; i<aa.length; i++)\r
-    {\r
-\r
-      if( aa[i].visible )\r
-        height += aa[i].height;\r
-\r
-      if(evt.getY()<height)\r
-      {\r
-        row = i;\r
-        break;\r
-      }\r
-    }\r
-\r
-    int res = evt.getX() / av.getCharWidth() + av.getStartRes();\r
-    if(row>-1 && aa[row].annotations[res]!=null)\r
-      this.setToolTipText(aa[row].annotations[res].description);\r
-\r
-  }\r
-  public void mouseClicked(MouseEvent evt) {}\r
-\r
-\r
-  public void paintComponent(Graphics g)\r
-  {\r
-    g.setColor(Color.white);\r
-    g.fillRect(0,0,getWidth(), getHeight());\r
-\r
-    imgWidth = (av.endRes-av.startRes+1) *av.charWidth;\r
-\r
-    image = new BufferedImage(imgWidth,\r
-                                ap.annotationPanel.getHeight(),\r
-                                BufferedImage.TYPE_INT_RGB);\r
-      gg = (Graphics2D) image.getGraphics();\r
-      gg.setColor(Color.white);\r
-      gg.fillRect(0, 0, imgWidth, getHeight());\r
-      gg.setRenderingHint(RenderingHints.KEY_ANTIALIASING,\r
-                          RenderingHints.VALUE_ANTIALIAS_ON);\r
-      fm = gg.getFontMetrics();\r
-      gg.setFont(av.getFont());\r
-\r
-\r
-    drawComponent( gg, av.startRes, av.endRes+1);\r
-    g.drawImage( image, 0, 0, this);\r
-  }\r
-\r
-  public void fastPaint(int horizontal)\r
-{\r
-  if(image==null || horizontal ==0)\r
-  {\r
-    repaint();\r
-    return;\r
-  }\r
-\r
-  gg.copyArea( 0,0, imgWidth, getHeight(), -horizontal*av.charWidth, 0 );\r
-  int sr=av.startRes, er=av.endRes+1, transX=0;\r
-\r
-  if(horizontal>0) // scrollbar pulled right, image to the left\r
-  {\r
-    transX =  (er-sr-horizontal)*av.charWidth;\r
-    sr = er - horizontal ;\r
-  }\r
-  else if(horizontal<0)\r
-  {\r
-    er = sr-horizontal;\r
-  }\r
-\r
-\r
-  gg.translate(transX, 0);\r
-\r
-  drawComponent(gg, sr, er);\r
-\r
-  gg.translate( -transX, 0 );\r
-\r
-  getGraphics().drawImage(image, 0, 0, this);\r
-}\r
-\r
-\r
-  public void drawComponent(Graphics2D g, int startRes, int endRes)\r
-  {\r
-    g.setColor(Color.white);\r
-    g.fillRect(0,0,(endRes-startRes) *av.charWidth, getHeight());\r
-    if(av.alignment.getAlignmentAnnotation()==null || av.alignment.getAlignmentAnnotation().length<1)\r
-    {\r
-      g.setColor(Color.black);\r
-      g.drawString("Alignment has no annotations",20,15);\r
-      return;\r
-    }\r
-\r
-    AlignmentAnnotation [] aa = av.alignment.getAlignmentAnnotation();\r
-\r
-    int j, x=0, y=0;\r
-    char [] lastSS = new char[aa.length];\r
-    int  [] lastSSX= new int[aa.length] ;\r
-    int iconOffset = av.charHeight/2;\r
-    boolean validRes = false;\r
-    //\u03B2 \u03B1\r
-    for(int i=0; i<aa.length; i++)\r
-    {\r
-      AlignmentAnnotation row = aa[i];\r
-      if(!row.visible)\r
-        continue;\r
-\r
-      if(row.isGraph)\r
-      {\r
-        // this is so that we draw the characters below the graph\r
-        y += row.height;\r
-        if(row.hasText)\r
-          y -= av.charHeight;\r
-      }\r
-      if(row.hasText)\r
-        iconOffset = av.charHeight/2;\r
-      else\r
-        iconOffset = 0;\r
-\r
-      for(j=startRes; j<endRes; j++)\r
-      {\r
-        validRes = row.annotations[j]==null?false:true;\r
-\r
-       x = (j-startRes)*av.charWidth;\r
-\r
-\r
-       if(activeRow==i)\r
-       {\r
-\r
-         g.setColor(Color.red);\r
-\r
-         if(activeRes!=null)\r
-           for (int n = 0; n < activeRes.size(); n++)\r
-           {\r
-             int v = Integer.parseInt(activeRes.get(n).toString()) ;\r
-             if (v == j)\r
-               g.fillRect( (j-startRes) * av.charWidth, y, av.charWidth, row.height);\r
-           }\r
-       }\r
-\r
-\r
-\r
-       if(validRes && row.annotations[j].displayCharacter.length()>0)\r
-       {\r
-         int charOffset = (av.charWidth -\r
-                            fm.charWidth(row.annotations[j].displayCharacter.\r
-                                         charAt(0))) / 2;\r
-         g.setColor( row.annotations[j].colour);\r
-          if(j==0)\r
-          {\r
-            if (row.annotations[0].secondaryStructure == 'H'\r
-                || row.annotations[0].secondaryStructure == 'E')\r
-              g.drawString(row.annotations[j].displayCharacter, x,\r
-                           y + iconOffset + 2);\r
-          }\r
-         else if( (row.annotations[j].secondaryStructure=='H'\r
-               || row.annotations[j].secondaryStructure=='E') &&\r
-               (row.annotations[j-1]==null ||\r
-                row.annotations[j].secondaryStructure!=row.annotations[j-1].secondaryStructure))\r
-\r
-        g.drawString(row.annotations[j].displayCharacter, x, y + iconOffset + 2);\r
-\r
-        if(!row.hasIcons)\r
-            g.drawString(row.annotations[j].displayCharacter, x + charOffset,\r
-                         y + iconOffset + 2);\r
-       }\r
-\r
-       if(row.hasIcons)\r
-       if(!validRes || row.annotations[j].secondaryStructure!=lastSS[i])\r
-       {\r
-         switch (lastSS[i])\r
-         {\r
-           case 'H':\r
-             g.setColor(HELIX_COLOUR);\r
-             g.fillRoundRect(lastSSX[i], y+4 + iconOffset, x-lastSSX[i], 7, 8, 8);\r
-             break;\r
-           case 'E':\r
-             g.setColor(SHEET_COLOUR);\r
-             g.fillRect(lastSSX[i], y + 4 + iconOffset, x-lastSSX[i]-4, 7);\r
-             g.fillPolygon(new int[] {x - 4, x- 4, x }\r
-                           , new int[]{y+ iconOffset, y + 14+ iconOffset, y + 8+ iconOffset}, 3);\r
-             break;\r
-           case 'C':\r
-             break;\r
-           default :\r
-             g.setColor(Color.gray);\r
-             g.fillRect(lastSSX[i], y+6+ iconOffset, x-lastSSX[i], 2);\r
-             break;\r
-         }\r
-\r
-         if(validRes)\r
-           lastSS[i] = row.annotations[j].secondaryStructure;\r
-          else\r
-            lastSS[i] = ' ';\r
-         lastSSX[i] = x;\r
-       }\r
-\r
-       if (validRes && row.isGraph)\r
-       {\r
-         g.setColor(new Color(0,0,180));\r
-         int height = (int)((row.annotations[j].value / row.graphMax)*50);\r
-\r
-         if(row.windowLength>1)\r
-         {\r
-           int total =0;\r
-           for(int i2=j- (row.windowLength/2); i2<j+(row.windowLength/2); i2++)\r
-           {\r
-             if(i2<0 || i2>=av.alignment.getWidth())\r
-               continue;\r
-\r
-             total += row.annotations[i2].value;\r
-           }\r
-\r
-           total/=row.windowLength;\r
-           height = (int)( (total / row.graphMax) *50);\r
-\r
-         }\r
-\r
-         g.fillRect(x, y-height, av.charWidth, height );\r
-       }\r
-\r
-\r
-      }\r
-\r
-      x+=av.charWidth;\r
-\r
-      if(row.hasIcons)\r
-      switch (lastSS[i])\r
-      {\r
-        case 'H':\r
-          g.setColor(HELIX_COLOUR);\r
-          g.fillRoundRect(lastSSX[i], y+4+ iconOffset, x - lastSSX[i], 7, 8, 8);\r
-          break;\r
-        case 'E':\r
-          g.setColor(SHEET_COLOUR);\r
-          g.fillRect(lastSSX[i], y + 4+ iconOffset, x - lastSSX[i] - 4, 7);\r
-          g.fillPolygon(new int[]\r
-                        {x - 4, x - 4, x}\r
-                        , new int[]\r
-                        {y + iconOffset, y + 14+ iconOffset, y + 7+ iconOffset}\r
-                        , 3);\r
-          break;\r
-        case 'C':\r
-          break;\r
-        default:\r
-          g.setColor(Color.gray);\r
-          g.fillRect(lastSSX[i], y+6+ iconOffset, x-lastSSX[i], 2);\r
-          break;\r
-\r
-      }\r
-\r
-       if(row.isGraph && row.hasText)\r
-         y+=av.charHeight;\r
-       if(!row.isGraph)\r
-          y+=aa[i].height;\r
-    }\r
-  }\r
-\r
-  // used by overview window\r
-  public void drawGraph(Graphics g, AlignmentAnnotation aa,int width, int y)\r
-  {\r
-    g.setColor(Color.white);\r
-    g.fillRect(0,0,width, y);\r
-    g.setColor(new Color(0,0,180));\r
-    int x = 0;\r
-    for(int j=0; j<aa.annotations.length; j++)\r
-    {\r
-      g.setColor(new Color(0, 0, 180));\r
-      int height = (int) ( (aa.annotations[j].value / aa.graphMax) * 50);\r
-      g.fillRect(x, y - height, av.charWidth, height);\r
-      x+=av.charWidth;\r
-    }\r
-  }\r
-}\r
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.8)
+ * Copyright (C) 2012 J Procter, AM Waterhouse, LM Lui, J Engelhardt, G Barton, M Clamp, S Searle
+ * 
+ * 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.
+ *  
+ * 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 Jalview.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package jalview.gui;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.awt.image.*;
+
+import javax.swing.*;
+
+import jalview.datamodel.*;
+import jalview.renderer.AnnotationRenderer;
+import jalview.renderer.AwtRenderPanelI;
+import jalview.util.MessageManager;
+
+/**
+ * AnnotationPanel displays visible portion of annotation rows below unwrapped
+ * alignment
+ * 
+ * @author $author$
+ * @version $Revision$
+ */
+public class AnnotationPanel extends JPanel implements AwtRenderPanelI,
+        MouseListener, MouseWheelListener, MouseMotionListener,
+        ActionListener, AdjustmentListener, Scrollable
+{
+  final String HELIX = "Helix";
+
+  final String SHEET = "Sheet";
+
+  /**
+   * For RNA secondary structure "stems" aka helices
+   */
+  final String STEM = "RNA Helix";
+
+  final String LABEL = "Label";
+
+  final String REMOVE = "Remove Annotation";
+
+  final String COLOUR = "Colour";
+
+  public final Color HELIX_COLOUR = Color.red.darker();
+
+  public final Color SHEET_COLOUR = Color.green.darker().darker();
+
+  public final Color STEM_COLOUR = Color.blue.darker();
+
+  /** DOCUMENT ME!! */
+  public AlignViewport av;
+
+  AlignmentPanel ap;
+
+  public int activeRow = -1;
+
+  public BufferedImage image;
+
+  public volatile BufferedImage fadedImage;
+
+  Graphics2D gg;
+
+  public FontMetrics fm;
+
+  public int imgWidth = 0;
+
+  boolean fastPaint = false;
+
+  // Used For mouse Dragging and resizing graphs
+  int graphStretch = -1;
+
+  int graphStretchY = -1;
+
+  int min; // used by mouseDragged to see if user
+
+  int max; // used by mouseDragged to see if user
+
+  boolean mouseDragging = false;
+
+  boolean MAC = false;
+
+  // for editing cursor
+  int cursorX = 0;
+
+  int cursorY = 0;
+
+  public final AnnotationRenderer renderer;
+
+  private MouseWheelListener[] _mwl;
+
+  /**
+   * Creates a new AnnotationPanel object.
+   * 
+   * @param ap
+   *          DOCUMENT ME!
+   */
+  public AnnotationPanel(AlignmentPanel ap)
+  {
+
+    MAC = new jalview.util.Platform().isAMac();
+
+    ToolTipManager.sharedInstance().registerComponent(this);
+    ToolTipManager.sharedInstance().setInitialDelay(0);
+    ToolTipManager.sharedInstance().setDismissDelay(10000);
+    this.ap = ap;
+    av = ap.av;
+    this.setLayout(null);
+    addMouseListener(this);
+    addMouseMotionListener(this);
+    ap.annotationScroller.getVerticalScrollBar()
+            .addAdjustmentListener(this);
+    // save any wheel listeners on the scroller, so we can propagate scroll
+    // events to them.
+    _mwl = ap.annotationScroller.getMouseWheelListeners();
+    // and then set our own listener to consume all mousewheel events
+    ap.annotationScroller.addMouseWheelListener(this);
+    renderer = new AnnotationRenderer();
+  }
+
+  public AnnotationPanel(AlignViewport av)
+  {
+    this.av = av;
+    renderer = new AnnotationRenderer();
+  }
+
+  @Override
+  public void mouseWheelMoved(MouseWheelEvent e)
+  {
+    if (e.isShiftDown())
+    {
+      e.consume();
+      if (e.getWheelRotation() > 0)
+      {
+        ap.scrollRight(true);
+      }
+      else
+      {
+        ap.scrollRight(false);
+      }
+    }
+    else
+    {
+      // TODO: find the correct way to let the event bubble up to
+      // ap.annotationScroller
+      for (MouseWheelListener mwl : _mwl)
+      {
+        if (mwl != null)
+        {
+          mwl.mouseWheelMoved(e);
+        }
+        if (e.isConsumed())
+        {
+          break;
+        }
+      }
+    }
+  }
+
+  @Override
+  public Dimension getPreferredScrollableViewportSize()
+  {
+    return getPreferredSize();
+  }
+
+  @Override
+  public int getScrollableBlockIncrement(Rectangle visibleRect,
+          int orientation, int direction)
+  {
+    return 30;
+  }
+
+  @Override
+  public boolean getScrollableTracksViewportHeight()
+  {
+    return false;
+  }
+
+  @Override
+  public boolean getScrollableTracksViewportWidth()
+  {
+    return true;
+  }
+
+  @Override
+  public int getScrollableUnitIncrement(Rectangle visibleRect,
+          int orientation, int direction)
+  {
+    return 30;
+  }
+
+  /*
+   * (non-Javadoc)
+   * 
+   * @see
+   * java.awt.event.AdjustmentListener#adjustmentValueChanged(java.awt.event
+   * .AdjustmentEvent)
+   */
+  @Override
+  public void adjustmentValueChanged(AdjustmentEvent evt)
+  {
+    // update annotation label display
+    ap.alabels.setScrollOffset(-evt.getValue());
+  }
+
+  /**
+   * Calculates the height of the annotation displayed in the annotation panel.
+   * Callers should normally call the ap.adjustAnnotationHeight method to ensure
+   * all annotation associated components are updated correctly.
+   * 
+   */
+  public int adjustPanelHeight()
+  {
+    int height = av.calcPanelHeight();
+    this.setPreferredSize(new Dimension(1, height));
+    if (ap != null)
+    {
+      // revalidate only when the alignment panel is fully constructed
+      ap.validate();
+    }
+
+    return height;
+  }
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param evt
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void actionPerformed(ActionEvent evt)
+  {
+    AlignmentAnnotation[] aa = av.getAlignment().getAlignmentAnnotation();
+    if (aa == null)
+    {
+      return;
+    }
+    Annotation[] anot = aa[activeRow].annotations;
+
+    if (anot.length < av.getColumnSelection().getMax())
+    {
+      Annotation[] temp = new Annotation[av.getColumnSelection().getMax() + 2];
+      System.arraycopy(anot, 0, temp, 0, anot.length);
+      anot = temp;
+      aa[activeRow].annotations = anot;
+    }
+
+    if (evt.getActionCommand().equals(REMOVE))
+    {
+      for (int i = 0; i < av.getColumnSelection().size(); i++)
+      {
+        anot[av.getColumnSelection().columnAt(i)] = null;
+      }
+    }
+    else if (evt.getActionCommand().equals(LABEL))
+    {
+      String exMesg = collectAnnotVals(anot, av.getColumnSelection(), LABEL);
+      String label = JOptionPane.showInputDialog(this, MessageManager.getString("label.enter_label"),
+              exMesg);
+
+      if (label == null)
+      {
+        return;
+      }
+
+      if ((label.length() > 0) && !aa[activeRow].hasText)
+      {
+        aa[activeRow].hasText = true;
+      }
+
+      for (int i = 0; i < av.getColumnSelection().size(); i++)
+      {
+        int index = av.getColumnSelection().columnAt(i);
+
+        if (!av.getColumnSelection().isVisible(index))
+          continue;
+
+        if (anot[index] == null)
+        {
+          anot[index] = new Annotation(label, "", ' ', 0); // TODO: verify that
+          // null exceptions
+          // aren't raised
+          // elsewhere.
+        }
+        else
+        {
+          anot[index].displayCharacter = label;
+        }
+      }
+    }
+    else if (evt.getActionCommand().equals(COLOUR))
+    {
+      Color col = JColorChooser.showDialog(this,
+              "Choose foreground colour", Color.black);
+
+      for (int i = 0; i < av.getColumnSelection().size(); i++)
+      {
+        int index = av.getColumnSelection().columnAt(i);
+
+        if (!av.getColumnSelection().isVisible(index))
+          continue;
+
+        if (anot[index] == null)
+        {
+          anot[index] = new Annotation("", "", ' ', 0);
+        }
+
+        anot[index].colour = col;
+      }
+    }
+    else
+    // HELIX OR SHEET
+    {
+      char type = 0;
+      String symbol = "\u03B1";
+
+      if (evt.getActionCommand().equals(HELIX))
+      {
+        type = 'H';
+      }
+      else if (evt.getActionCommand().equals(SHEET))
+      {
+        type = 'E';
+        symbol = "\u03B2";
+      }
+
+      // Added by LML to color stems
+      else if (evt.getActionCommand().equals(STEM))
+      {
+        type = 'S';
+        symbol = "\u03C3";
+      }
+
+      if (!aa[activeRow].hasIcons)
+      {
+        aa[activeRow].hasIcons = true;
+      }
+
+      String label = JOptionPane.showInputDialog(
+              MessageManager.getString("label.enter_label_for_the_structure"), symbol);
+
+      if (label == null)
+      {
+        return;
+      }
+
+      if ((label.length() > 0) && !aa[activeRow].hasText)
+      {
+        aa[activeRow].hasText = true;
+      }
+
+      for (int i = 0; i < av.getColumnSelection().size(); i++)
+      {
+        int index = av.getColumnSelection().columnAt(i);
+
+        if (!av.getColumnSelection().isVisible(index))
+          continue;
+
+        if (anot[index] == null)
+        {
+          anot[index] = new Annotation(label, "", type, 0);
+        }
+
+        anot[index].secondaryStructure = type;
+        anot[index].displayCharacter = label;
+      }
+    }
+    av.getAlignment().validateAnnotation(aa[activeRow]);
+    ap.alignmentChanged();
+    
+    adjustPanelHeight();
+    repaint();
+
+    return;
+  }
+
+  private String collectAnnotVals(Annotation[] anot,
+          ColumnSelection columnSelection, String label2)
+  {
+    String collatedInput = "";
+    String last = "";
+    ColumnSelection viscols = av.getColumnSelection();
+    // TODO: refactor and save av.getColumnSelection for efficiency
+    for (int i = 0; i < columnSelection.size(); i++)
+    {
+      int index = columnSelection.columnAt(i);
+      // always check for current display state - just in case
+      if (!viscols.isVisible(index))
+        continue;
+      String tlabel = null;
+      if (anot[index] != null)
+      { // LML added stem code
+        if (label2.equals(HELIX) || label2.equals(SHEET)
+                || label2.equals(STEM) || label2.equals(LABEL))
+        {
+          tlabel = anot[index].description;
+          if (tlabel == null || tlabel.length() < 1)
+          {
+            if (label2.equals(HELIX) || label2.equals(SHEET)
+                    || label2.equals(STEM))
+            {
+              tlabel = "" + anot[index].secondaryStructure;
+            }
+            else
+            {
+              tlabel = "" + anot[index].displayCharacter;
+            }
+          }
+        }
+        if (tlabel != null && !tlabel.equals(last))
+        {
+          if (last.length() > 0)
+          {
+            collatedInput += " ";
+          }
+          collatedInput += tlabel;
+        }
+      }
+    }
+    return collatedInput;
+  }
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param evt
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void mousePressed(MouseEvent evt)
+  {
+
+    AlignmentAnnotation[] aa = av.getAlignment().getAlignmentAnnotation();
+    if (aa == null)
+    {
+      return;
+    }
+
+    int height = 0;
+    activeRow = -1;
+
+    for (int i = 0; i < aa.length; i++)
+    {
+      if (aa[i].visible)
+      {
+        height += aa[i].height;
+      }
+
+      if (evt.getY() < height)
+      {
+        if (aa[i].editable)
+        {
+          activeRow = i;
+        }
+        else if (aa[i].graph > 0)
+        {
+          // Stretch Graph
+          graphStretch = i;
+          graphStretchY = evt.getY();
+        }
+
+        break;
+      }
+    }
+
+    if (SwingUtilities.isRightMouseButton(evt) && activeRow != -1)
+    {
+      if (av.getColumnSelection() == null)
+      {
+        return;
+      }
+
+      JPopupMenu pop = new JPopupMenu(MessageManager.getString("label.structure_type"));
+      JMenuItem item;
+      /*
+       * Just display the needed structure options
+       */
+      if (av.getAlignment().isNucleotide() == true)
+      {
+        item = new JMenuItem(STEM);
+        item.addActionListener(this);
+        pop.add(item);
+      }
+      else
+      {
+        item = new JMenuItem(HELIX);
+        item.addActionListener(this);
+        pop.add(item);
+        item = new JMenuItem(SHEET);
+        item.addActionListener(this);
+        pop.add(item);
+      }
+      item = new JMenuItem(LABEL);
+      item.addActionListener(this);
+      pop.add(item);
+      item = new JMenuItem(COLOUR);
+      item.addActionListener(this);
+      pop.add(item);
+      item = new JMenuItem(REMOVE);
+      item.addActionListener(this);
+      pop.add(item);
+      pop.show(this, evt.getX(), evt.getY());
+
+      return;
+    }
+
+    if (aa == null)
+    {
+      return;
+    }
+
+    ap.scalePanel.mousePressed(evt);
+
+  }
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param evt
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void mouseReleased(MouseEvent evt)
+  {
+    graphStretch = -1;
+    graphStretchY = -1;
+    mouseDragging = false;
+    ap.scalePanel.mouseReleased(evt);
+  }
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param evt
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void mouseEntered(MouseEvent evt)
+  {
+    ap.scalePanel.mouseEntered(evt);
+  }
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param evt
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void mouseExited(MouseEvent evt)
+  {
+    ap.scalePanel.mouseExited(evt);
+  }
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param evt
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void mouseDragged(MouseEvent evt)
+  {
+    if (graphStretch > -1)
+    {
+      av.getAlignment().getAlignmentAnnotation()[graphStretch].graphHeight += graphStretchY
+              - evt.getY();
+      if (av.getAlignment().getAlignmentAnnotation()[graphStretch].graphHeight < 0)
+      {
+        av.getAlignment().getAlignmentAnnotation()[graphStretch].graphHeight = 0;
+      }
+      graphStretchY = evt.getY();
+      adjustPanelHeight();
+      ap.paintAlignment(true);
+    }
+    else
+    {
+      ap.scalePanel.mouseDragged(evt);
+    }
+  }
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param evt
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void mouseMoved(MouseEvent evt)
+  {
+    AlignmentAnnotation[] aa = av.getAlignment().getAlignmentAnnotation();
+
+    if (aa == null)
+    {
+      this.setToolTipText(null);
+      return;
+    }
+
+    int row = -1;
+    int height = 0;
+
+    for (int i = 0; i < aa.length; i++)
+    {
+      if (aa[i].visible)
+      {
+        height += aa[i].height;
+      }
+
+      if (evt.getY() < height)
+      {
+        row = i;
+
+        break;
+      }
+    }
+
+    if (row == -1)
+    {
+      this.setToolTipText(null);
+      return;
+    }
+
+    int res = (evt.getX() / av.getCharWidth()) + av.getStartRes();
+
+    if (av.hasHiddenColumns())
+    {
+      res = av.getColumnSelection().adjustForHiddenColumns(res);
+    }
+
+    if (row > -1 && aa[row].annotations != null
+            && res < aa[row].annotations.length)
+    {
+      if (aa[row].graphGroup > -1)
+      {
+        StringBuffer tip = new StringBuffer("<html>");
+        for (int gg = 0; gg < aa.length; gg++)
+        {
+          if (aa[gg].graphGroup == aa[row].graphGroup
+                  && aa[gg].annotations[res] != null)
+          {
+            tip.append(aa[gg].label + " "
+                    + aa[gg].annotations[res].description + "<br>");
+          }
+        }
+        if (tip.length() != 6)
+        {
+          tip.setLength(tip.length() - 4);
+          this.setToolTipText(tip.toString() + "</html>");
+        }
+      }
+      else if (aa[row].annotations[res] != null
+              && aa[row].annotations[res].description != null
+              && aa[row].annotations[res].description.length() > 0)
+      {
+        this.setToolTipText("<html>"+JvSwingUtils.wrapTooltip(aa[row].annotations[res].description)+"</html>");
+      }
+      else
+      {
+        // clear the tooltip.
+        this.setToolTipText(null);
+      }
+
+      if (aa[row].annotations[res] != null)
+      {
+        StringBuffer text = new StringBuffer("Sequence position "
+                + (res + 1));
+
+        if (aa[row].annotations[res].description != null)
+        {
+          text.append("  " + aa[row].annotations[res].description);
+        }
+
+        ap.alignFrame.statusBar.setText(text.toString());
+      }
+    }
+    else
+    {
+      this.setToolTipText(null);
+    }
+  }
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param evt
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void mouseClicked(MouseEvent evt)
+  {
+//    if (activeRow != -1)
+//    {
+//      AlignmentAnnotation[] aa = av.getAlignment().getAlignmentAnnotation();
+//      AlignmentAnnotation anot = aa[activeRow];
+//    }
+  }
+
+  // TODO mouseClicked-content and drawCursor are quite experimental!
+  public void drawCursor(Graphics graphics, SequenceI seq, int res, int x1,
+          int y1)
+  {
+    int pady = av.charHeight / 5;
+    int charOffset = 0;
+    graphics.setColor(Color.black);
+    graphics.fillRect(x1, y1, av.charWidth, av.charHeight);
+
+    if (av.validCharWidth)
+    {
+      graphics.setColor(Color.white);
+
+      char s = seq.getCharAt(res);
+
+      charOffset = (av.charWidth - fm.charWidth(s)) / 2;
+      graphics.drawString(String.valueOf(s), charOffset + x1,
+              (y1 + av.charHeight) - pady);
+    }
+
+  }
+
+  private volatile boolean imageFresh = false;
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param g
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void paintComponent(Graphics g)
+  {
+    g.setColor(Color.white);
+    g.fillRect(0, 0, getWidth(), getHeight());
+
+    if (image != null)
+    {
+      if (fastPaint || (getVisibleRect().width != g.getClipBounds().width)
+              || (getVisibleRect().height != g.getClipBounds().height))
+      {
+        g.drawImage(image, 0, 0, this);
+        fastPaint = false;
+        return;
+      }
+    }
+    imgWidth = (av.endRes - av.startRes + 1) * av.charWidth;
+    if (imgWidth < 1)
+      return;
+    if (image == null || imgWidth != image.getWidth(this)
+            || image.getHeight(this) != getHeight())
+    {
+      try
+      {
+        image = new BufferedImage(imgWidth, ap.annotationPanel.getHeight(),
+                BufferedImage.TYPE_INT_RGB);
+      } catch (OutOfMemoryError oom)
+      {
+        try
+        {
+          System.gc();
+        } catch (Exception x)
+        {
+        }
+        ;
+        new OOMWarning(
+                "Couldn't allocate memory to redraw screen. Please restart Jalview",
+                oom);
+        return;
+      }
+      gg = (Graphics2D) image.getGraphics();
+
+      if (av.antiAlias)
+      {
+        gg.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
+                RenderingHints.VALUE_ANTIALIAS_ON);
+      }
+
+      gg.setFont(av.getFont());
+      fm = gg.getFontMetrics();
+      gg.setColor(Color.white);
+      gg.fillRect(0, 0, imgWidth, image.getHeight());
+      imageFresh = true;
+    }
+
+    drawComponent(gg, av.startRes, av.endRes + 1);
+    imageFresh = false;
+    g.drawImage(image, 0, 0, this);
+  }
+  /**
+   * set true to enable redraw timing debug output on stderr
+   */
+  private final boolean debugRedraw = false;
+  /**
+   * non-Thread safe repaint
+   * 
+   * @param horizontal
+   *          repaint with horizontal shift in alignment
+   */
+  public void fastPaint(int horizontal)
+  {
+    if ((horizontal == 0) || gg == null
+            || av.getAlignment().getAlignmentAnnotation() == null
+            || av.getAlignment().getAlignmentAnnotation().length < 1
+            || av.isCalcInProgress())
+    {
+      repaint();
+      return;
+    }
+    long stime=System.currentTimeMillis();
+    gg.copyArea(0, 0, imgWidth, getHeight(), -horizontal * av.charWidth, 0);
+    long mtime=System.currentTimeMillis();
+    int sr = av.startRes;
+    int er = av.endRes + 1;
+    int transX = 0;
+
+    if (horizontal > 0) // scrollbar pulled right, image to the left
+    {
+      transX = (er - sr - horizontal) * av.charWidth;
+      sr = er - horizontal;
+    }
+    else if (horizontal < 0)
+    {
+      er = sr - horizontal;
+    }
+
+    gg.translate(transX, 0);
+
+    drawComponent(gg, sr, er);
+
+    gg.translate(-transX, 0);
+    long dtime=System.currentTimeMillis();
+    fastPaint = true;
+    repaint();
+    long rtime=System.currentTimeMillis();
+    if (debugRedraw) {
+      System.err.println("Scroll:\t"+horizontal+"\tCopyArea:\t"+(mtime-stime)+"\tDraw component:\t"+(dtime-mtime)+"\tRepaint call:\t"+(rtime-dtime));
+    }
+
+  }
+
+  private volatile boolean lastImageGood = false;
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param g
+   *          DOCUMENT ME!
+   * @param startRes
+   *          DOCUMENT ME!
+   * @param endRes
+   *          DOCUMENT ME!
+   */
+  public void drawComponent(Graphics g, int startRes, int endRes)
+  {
+    BufferedImage oldFaded = fadedImage;
+    if (av.isCalcInProgress())
+    {
+      if (image == null)
+      {
+        lastImageGood = false;
+        return;
+      }
+      // We'll keep a record of the old image,
+      // and draw a faded image until the calculation
+      // has completed
+      if (lastImageGood
+              && (fadedImage == null || fadedImage.getWidth() != imgWidth || fadedImage
+                      .getHeight() != image.getHeight()))
+      {
+        // System.err.println("redraw faded image ("+(fadedImage==null ?
+        // "null image" : "") + " lastGood="+lastImageGood+")");
+        fadedImage = new BufferedImage(imgWidth, image.getHeight(),
+                BufferedImage.TYPE_INT_RGB);
+
+        Graphics2D fadedG = (Graphics2D) fadedImage.getGraphics();
+
+        fadedG.setColor(Color.white);
+        fadedG.fillRect(0, 0, imgWidth, image.getHeight());
+
+        fadedG.setComposite(AlphaComposite.getInstance(
+                AlphaComposite.SRC_OVER, .3f));
+        fadedG.drawImage(image, 0, 0, this);
+
+      }
+      // make sure we don't overwrite the last good faded image until all
+      // calculations have finished
+      lastImageGood = false;
+
+    }
+    else
+    {
+      if (fadedImage != null)
+      {
+        oldFaded = fadedImage;
+      }
+      fadedImage = null;
+    }
+    
+    g.setColor(Color.white);
+    g.fillRect(0, 0, (endRes - startRes) * av.charWidth, getHeight());
+
+    g.setFont(av.getFont());
+    if (fm == null)
+    {
+      fm = g.getFontMetrics();
+    }
+
+    if ((av.getAlignment().getAlignmentAnnotation() == null)
+            || (av.getAlignment().getAlignmentAnnotation().length < 1))
+    {
+      g.setColor(Color.white);
+      g.fillRect(0, 0, getWidth(), getHeight());
+      g.setColor(Color.black);
+      if (av.validCharWidth)
+      {
+        g.drawString(MessageManager.getString("label.alignment_has_no_annotations"), 20, 15);
+      }
+
+      return;
+    }
+    lastImageGood = renderer.drawComponent(this, av, g, activeRow,
+            startRes, endRes);
+    if (!lastImageGood && fadedImage == null)
+    {
+      fadedImage = oldFaded;
+    }
+  }
+
+  @Override
+  public FontMetrics getFontMetrics()
+  {
+    return fm;
+  }
+
+  @Override
+  public Image getFadedImage()
+  {
+    return fadedImage;
+  }
+
+  @Override
+  public int getFadedImageWidth()
+  {
+    return imgWidth;
+  }
+  private int[] bounds = new int[2];
+  @Override
+  public int[] getVisibleVRange()
+  {
+    if (ap!=null && ap.alabels!=null)
+    {
+    int sOffset=-ap.alabels.scrollOffset;
+    int visHeight = sOffset+ap.annotationSpaceFillerHolder.getHeight();
+    bounds[0] = sOffset; bounds[1]=visHeight;
+    return bounds;
+    } else return null;
+  }
+}