JAL-1645 Version-Rel Version 2.9 Year-Rel 2015 Licensing glob
[jalview.git] / src / jalview / gui / AnnotationPanel.java
index e0b36d3..3f4c92a 100755 (executable)
-/*\r
- * Jalview - A Sequence Alignment Editor and Viewer\r
- * Copyright (C) 2006 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.gui;\r
-\r
-import jalview.datamodel.*;\r
-\r
-import java.awt.*;\r
-import java.awt.event.*;\r
-import java.awt.image.*;\r
-\r
-import javax.swing.*;\r
-\r
-\r
-/**\r
- * DOCUMENT ME!\r
- *\r
- * @author $author$\r
- * @version $Revision$\r
- */\r
-public class AnnotationPanel extends JPanel implements MouseListener,\r
-    MouseMotionListener, ActionListener, AdjustmentListener\r
-{\r
-    final String HELIX = "Helix";\r
-    final String SHEET = "Sheet";\r
-    final String LABEL = "Label";\r
-    final String REMOVE = "Remove Annotation";\r
-    final String COLOUR = "Colour";\r
-    final Color HELIX_COLOUR = Color.red.darker();\r
-    final Color SHEET_COLOUR = Color.green.darker().darker();\r
-\r
-    /** DOCUMENT ME!! */\r
-    AlignViewport av;\r
-    AlignmentPanel ap;\r
-    int activeRow = -1;\r
-    BufferedImage image;\r
-    BufferedImage fadedImage;\r
-    Graphics2D gg;\r
-    FontMetrics fm;\r
-    int imgWidth = 0;\r
-    boolean fastPaint = false;\r
-\r
-    //Used For mouse Dragging and resizing graphs\r
-    int graphStretch = -1;\r
-    int graphStretchY = -1;\r
-    int min; //used by mouseDragged to see if user\r
-    int max; //used by mouseDragged to see if user\r
-    boolean mouseDragging = false;\r
-\r
-    boolean MAC = false;\r
-\r
-    /**\r
-     * Creates a new AnnotationPanel object.\r
-     *\r
-     * @param ap DOCUMENT ME!\r
-     */\r
-    public AnnotationPanel(AlignmentPanel ap)\r
-    {\r
-\r
-    if(System.getProperty("os.name").startsWith("Mac"))\r
-      MAC = true;\r
-\r
-        ToolTipManager.sharedInstance().registerComponent(this);\r
-        ToolTipManager.sharedInstance().setInitialDelay(0);\r
-        ToolTipManager.sharedInstance().setDismissDelay(10000);\r
-        this.ap = ap;\r
-        av = ap.av;\r
-        this.setLayout(null);\r
-        addMouseListener(this);\r
-        addMouseMotionListener(this);\r
-        ap.annotationScroller.getVerticalScrollBar().addAdjustmentListener(this);\r
-    }\r
-\r
-    public AnnotationPanel(AlignViewport av)\r
-    {\r
-      this.av = av;\r
-    }\r
-\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param evt DOCUMENT ME!\r
-     */\r
-    public void adjustmentValueChanged(AdjustmentEvent evt)\r
-    {\r
-        ap.alabels.setScrollOffset(-evt.getValue());\r
-    }\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     */\r
-    public int adjustPanelHeight()\r
-    {\r
-        // setHeight of panels\r
-        AlignmentAnnotation[] aa = av.alignment.getAlignmentAnnotation();\r
-        int height = 0;\r
-\r
-        if (aa != null)\r
-        {\r
-            for (int i = 0; i < aa.length; i++)\r
-            {\r
-                if (!aa[i].visible)\r
-                {\r
-                    continue;\r
-                }\r
-\r
-                aa[i].height = 0;\r
-\r
-                if (aa[i].hasText)\r
-                {\r
-                    aa[i].height += av.charHeight;\r
-                }\r
-\r
-                if (aa[i].hasIcons)\r
-                {\r
-                    aa[i].height += 16;\r
-                }\r
-\r
-                if (aa[i].graph>0)\r
-                {\r
-                    aa[i].height += aa[i].graphHeight;\r
-                }\r
-\r
-                if (aa[i].height == 0)\r
-                {\r
-                    aa[i].height = 20;\r
-                }\r
-\r
-                height += aa[i].height;\r
-            }\r
-        }\r
-        else\r
-        {\r
-            height = 20;\r
-        }\r
-\r
-        this.setPreferredSize(new Dimension(1, height));\r
-\r
-        return height;\r
-    }\r
-\r
-\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param evt DOCUMENT ME!\r
-     */\r
-    public void actionPerformed(ActionEvent evt)\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 < av.getColumnSelection().size(); i++)\r
-            {\r
-                anot[av.getColumnSelection().columnAt(i)] = null;\r
-            }\r
-        }\r
-        else if (evt.getActionCommand().equals(LABEL))\r
-        {\r
-            String label = JOptionPane.showInputDialog(this, "Enter Label ",\r
-                    "Enter label", JOptionPane.QUESTION_MESSAGE);\r
-\r
-            if (label == null)\r
-            {\r
-                return;\r
-            }\r
-\r
-            if ((label.length() > 0) && !aa[activeRow].hasText)\r
-            {\r
-                aa[activeRow].hasText = true;\r
-            }\r
-\r
-            for (int i = 0; i < av.getColumnSelection().size(); i++)\r
-            {\r
-                int index = av.getColumnSelection().columnAt(i);\r
-\r
-                if (anot[index] == null)\r
-                {\r
-                    anot[index] = new Annotation(label, "", ' ', 0);\r
-                }\r
-\r
-                anot[index].displayCharacter = label;\r
-            }\r
-        }\r
-        else if (evt.getActionCommand().equals(COLOUR))\r
-        {\r
-            Color col = JColorChooser.showDialog(this,\r
-                    "Choose foreground colour", Color.black);\r
-\r
-            for (int i = 0; i < av.getColumnSelection().size(); i++)\r
-            {\r
-                int index = av.getColumnSelection().columnAt(i);\r
-\r
-                if (anot[index] == null)\r
-                {\r
-                    anot[index] = new Annotation("", "", ' ', 0);\r
-                }\r
-\r
-                anot[index].colour = col;\r
-            }\r
-        }\r
-        else // HELIX OR SHEET\r
-        {\r
-            char type = 0;\r
-            String symbol = "\u03B1";\r
-\r
-            if (evt.getActionCommand().equals(HELIX))\r
-            {\r
-                type = 'H';\r
-            }\r
-            else if (evt.getActionCommand().equals(SHEET))\r
-            {\r
-                type = 'E';\r
-                symbol = "\u03B2";\r
-            }\r
-\r
-            if (!aa[activeRow].hasIcons)\r
-            {\r
-                aa[activeRow].hasIcons = true;\r
-            }\r
-\r
-            String label = JOptionPane.showInputDialog("Enter a label for the structure?",\r
-                    symbol);\r
-\r
-            if (label == null)\r
-            {\r
-                return;\r
-            }\r
-\r
-            if ((label.length() > 0) && !aa[activeRow].hasText)\r
-            {\r
-                aa[activeRow].hasText = true;\r
-            }\r
-\r
-            for (int i = 0; i < av.getColumnSelection().size(); i++)\r
-            {\r
-                int index = av.getColumnSelection().columnAt(i);\r
-\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
-        repaint();\r
-\r
-        return;\r
-    }\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param evt DOCUMENT ME!\r
-     */\r
-    public void mousePressed(MouseEvent evt)\r
-    {\r
-\r
-        AlignmentAnnotation[] aa = av.alignment.getAlignmentAnnotation();\r
-        if(aa==null)\r
-          return;\r
-\r
-\r
-        int height = 0;\r
-        activeRow = -1;\r
-\r
-\r
-        for (int i = 0; i < aa.length; i++)\r
-        {\r
-            if (aa[i].visible)\r
-            {\r
-              height += aa[i].height;\r
-            }\r
-\r
-            if (evt.getY() < height)\r
-            {\r
-                if (aa[i].editable)\r
-                {\r
-                    activeRow = i;\r
-                }\r
-                else if(aa[i].graph>0)\r
-                {\r
-                    //Stretch Graph\r
-                    graphStretch = i;\r
-                    graphStretchY = evt.getY();\r
-                }\r
-\r
-                break;\r
-            }\r
-        }\r
-\r
-\r
-        if (SwingUtilities.isRightMouseButton(evt) && activeRow!=-1)\r
-        {\r
-            if (av.getColumnSelection() == null)\r
-            {\r
-                return;\r
-            }\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
-\r
-            return;\r
-        }\r
-\r
-        if (aa == null)\r
-        {\r
-            return;\r
-        }\r
-\r
-        int res = (evt.getX() / av.getCharWidth()) + av.getStartRes();\r
-\r
-        if(av.hasHiddenColumns)\r
-          res = av.getColumnSelection().adjustForHiddenColumns(res);\r
-\r
-        min = res;\r
-        max = res;\r
-\r
-        if (av.getColumnSelection().contains(res))\r
-          av.getColumnSelection().removeElement(res);\r
-        else\r
-        {\r
-            av.getColumnSelection().addElement(res);\r
-            SequenceGroup sg = new SequenceGroup();\r
-\r
-            for (int i = 0; i < av.alignment.getSequences().size(); i++)\r
-            {\r
-                sg.addSequence(av.alignment.getSequenceAt(i), false);\r
-            }\r
-\r
-            sg.setStartRes(res);\r
-            sg.setEndRes(res);\r
-            av.setSelectionGroup(sg);\r
-        }\r
-\r
-        ap.repaint();\r
-\r
-    }\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param evt DOCUMENT ME!\r
-     */\r
-    public void mouseReleased(MouseEvent evt)\r
-    {\r
-      graphStretch = -1;\r
-      graphStretchY = -1;\r
-      mouseDragging = false;\r
-    }\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param evt DOCUMENT ME!\r
-     */\r
-    public void mouseEntered(MouseEvent evt)\r
-    {\r
-      if(mouseDragging)\r
-        ap.seqPanel.scrollCanvas(null);\r
-    }\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param evt DOCUMENT ME!\r
-     */\r
-    public void mouseExited(MouseEvent evt)\r
-    {\r
-      if(mouseDragging)\r
-        ap.seqPanel.scrollCanvas(evt);\r
-    }\r
-\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param evt DOCUMENT ME!\r
-     */\r
-    public void mouseDragged(MouseEvent evt)\r
-    {\r
-      if(graphStretch>-1)\r
-      {\r
-        av.alignment.getAlignmentAnnotation()[graphStretch].graphHeight += graphStretchY - evt.getY();\r
-        if(av.alignment.getAlignmentAnnotation()[graphStretch].graphHeight <0)\r
-          av.alignment.getAlignmentAnnotation()[graphStretch].graphHeight = 0;\r
-        graphStretchY = evt.getY();\r
-        adjustPanelHeight();\r
-        ap.repaint();\r
-      }\r
-      else\r
-      {\r
-        mouseDragging = true;\r
-\r
-        int res = (evt.getX() / av.getCharWidth()) + av.getStartRes();\r
-\r
-        if(av.hasHiddenColumns)\r
-          res = av.getColumnSelection().adjustForHiddenColumns(res);\r
-\r
-        SequenceGroup sg = av.getSelectionGroup();\r
-\r
-        if (res < min)\r
-        {\r
-            min = res;\r
-        }\r
-\r
-        if (res > max)\r
-        {\r
-            max = res;\r
-        }\r
-\r
-        if (sg != null)\r
-        {\r
-            if (!av.getColumnSelection().contains(res))\r
-            {\r
-                av.getColumnSelection().addElement(res);\r
-            }\r
-\r
-            if (res > sg.getStartRes())\r
-            {\r
-                sg.setEndRes(res);\r
-            }\r
-            else if (res < sg.getStartRes())\r
-            {\r
-                sg.setStartRes(res);\r
-            }\r
-\r
-            for (int i = min; i <= max; i++)\r
-            {\r
-                if ((i < sg.getStartRes()) || (i > sg.getEndRes()))\r
-                {\r
-                    av.getColumnSelection().removeElement(i);\r
-                }\r
-                else\r
-                {\r
-                    av.getColumnSelection().addElement(i);\r
-                }\r
-            }\r
-\r
-            ap.repaint();\r
-        }\r
-\r
-      }\r
-    }\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param evt DOCUMENT ME!\r
-     */\r
-    public void mouseMoved(MouseEvent evt)\r
-    {\r
-        AlignmentAnnotation[] aa = av.alignment.getAlignmentAnnotation();\r
-\r
-        if (aa == null)\r
-        {\r
-            return;\r
-        }\r
-\r
-        int row = -1;\r
-        int height = 0;\r
-\r
-        for (int i = 0; i < aa.length; i++)\r
-        {\r
-            if (aa[i].visible)\r
-            {\r
-                height += aa[i].height;\r
-            }\r
-\r
-            if (evt.getY() < height)\r
-            {\r
-                row = i;\r
-\r
-                break;\r
-            }\r
-        }\r
-\r
-        if(row==-1)\r
-          return;\r
-\r
-        int res = (evt.getX() / av.getCharWidth()) + av.getStartRes();\r
-\r
-        if(av.hasHiddenColumns)\r
-          res = av.getColumnSelection().adjustForHiddenColumns(res);\r
-\r
-        if ( aa[row].annotations!=null\r
-             && row > -1\r
-             && res < (int) aa[row].annotations.length)\r
-        {\r
-            if(aa[row].graphGroup>-1)\r
-            {\r
-              StringBuffer tip = new StringBuffer("<html>");\r
-              for (int gg = 0; gg < aa.length; gg++)\r
-              {\r
-                if (aa[gg].graphGroup == aa[row].graphGroup && aa[gg].annotations[res]!=null)\r
-                  tip.append(aa[gg].label+" "+aa[gg].annotations[res].description+"<br>" );\r
-              }\r
-              if(tip.length()!=6)\r
-              {\r
-                tip.setLength(tip.length() - 4);\r
-                this.setToolTipText(tip.toString() + "</html>");\r
-              }\r
-            }\r
-            else if(aa[row].annotations[res] != null)\r
-              this.setToolTipText(aa[row].annotations[res].description);\r
-\r
-            if(aa[row].annotations[res]!=null)\r
-            {\r
-              StringBuffer text = new StringBuffer("Sequence position " +\r
-                                                   (res + 1) + "  " +\r
-                                                   aa[row].annotations[res].description);\r
-\r
-              ap.alignFrame.statusBar.setText(text.toString());\r
-            }\r
-        }\r
-    }\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param evt DOCUMENT ME!\r
-     */\r
-    public void mouseClicked(MouseEvent evt)\r
-    {\r
-    }\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param g DOCUMENT ME!\r
-     */\r
-    public void paintComponent(Graphics g)\r
-    {\r
-      g.setColor(Color.white);\r
-      g.fillRect(0, 0, getWidth(), getHeight());\r
-\r
-      if(image!=null)\r
-      {if (fastPaint\r
-            || (getVisibleRect().width != g.getClipBounds().width)\r
-            || (getVisibleRect().height != g.getClipBounds().height))\r
-        {\r
-          g.drawImage(image, 0, 0, this);\r
-          fastPaint = false;\r
-          return;\r
-        }\r
-      }\r
-      imgWidth = (av.endRes - av.startRes + 1) * av.charWidth;\r
-\r
-      if (image == null || imgWidth != image.getWidth()\r
-          || image.getHeight(this) != getHeight())\r
-      {\r
-        image = new BufferedImage(imgWidth, ap.annotationPanel.getHeight(),\r
-                                  BufferedImage.TYPE_INT_RGB);\r
-        gg = (Graphics2D) image.getGraphics();\r
-\r
-        if(av.antiAlias)\r
-        gg.setRenderingHint(RenderingHints.KEY_ANTIALIASING,\r
-                            RenderingHints.VALUE_ANTIALIAS_ON);\r
-\r
-        gg.setFont(av.getFont());\r
-        fm = gg.getFontMetrics();\r
-        gg.setColor(Color.white);\r
-        gg.fillRect(0, 0, imgWidth, image.getHeight());\r
-      }\r
-\r
-\r
-      drawComponent(gg, av.startRes, av.endRes + 1);\r
-      g.drawImage(image, 0, 0, this);\r
-    }\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param horizontal DOCUMENT ME!\r
-     */\r
-    public void fastPaint(int horizontal)\r
-    {\r
-        if ((horizontal == 0)\r
-            || gg==null\r
-            || av.alignment.getAlignmentAnnotation()==null\r
-            || av.alignment.getAlignmentAnnotation().length < 1\r
-            || av.updatingConsensus\r
-            || av.updatingConservation)\r
-        {\r
-            repaint();\r
-            return;\r
-        }\r
-\r
-        gg.copyArea(0, 0, imgWidth, getHeight(), -horizontal * av.charWidth, 0);\r
-\r
-        int sr = av.startRes;\r
-        int er = av.endRes + 1;\r
-        int 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
-        gg.translate(transX, 0);\r
-\r
-        drawComponent(gg, sr, er);\r
-\r
-        gg.translate(-transX, 0);\r
-\r
-        fastPaint = true;\r
-\r
-        repaint();\r
-\r
-    }\r
-\r
-    /**\r
-     * DOCUMENT ME!\r
-     *\r
-     * @param g DOCUMENT ME!\r
-     * @param startRes DOCUMENT ME!\r
-     * @param endRes DOCUMENT ME!\r
-     */\r
-    public void drawComponent(Graphics g, int startRes, int endRes)\r
-    {\r
-      if(av.updatingConsensus || av.updatingConservation)\r
-      {\r
-        if(image==null)\r
-         {\r
-           return;\r
-         }\r
-        //We'll keep a record of the old image,\r
-        //and draw a faded image until the calculation\r
-        //has completed\r
-        if(fadedImage==null\r
-           || fadedImage.getWidth()!=imgWidth\r
-        || fadedImage.getHeight()!=image.getHeight())\r
-        {\r
-          fadedImage = new BufferedImage(\r
-              imgWidth, image.getHeight(),\r
-              BufferedImage.TYPE_INT_RGB);\r
-\r
-          Graphics2D fadedG = (Graphics2D) fadedImage.getGraphics();\r
-\r
-          fadedG.setColor(Color.white);\r
-        fadedG.fillRect(0, 0, imgWidth, image.getHeight());\r
-\r
-          fadedG.setComposite(\r
-              AlphaComposite.getInstance(\r
-                  AlphaComposite.SRC_OVER, .3f));\r
-          fadedG.drawImage(image, 0, 0, this);\r
-\r
-        }\r
-\r
-      }\r
-      else\r
-        fadedImage = null;\r
-\r
-\r
-      g.setColor(Color.white);\r
-      g.fillRect(0, 0, (endRes - startRes) * av.charWidth, getHeight());\r
-\r
-      g.setFont(av.getFont());\r
-      if (fm == null)\r
-        fm = g.getFontMetrics();\r
-\r
-\r
-\r
-\r
-        if ( (av.alignment.getAlignmentAnnotation() == null) ||\r
-                (av.alignment.getAlignmentAnnotation().length < 1))\r
-        {\r
-            g.setColor(Color.white);\r
-            g.fillRect(0, 0, getWidth(), getHeight());\r
-            g.setColor(Color.black);\r
-            if(av.validCharWidth)\r
-              g.drawString("Alignment has no annotations", 20, 15);\r
-\r
-            return;\r
-        }\r
-\r
-\r
-        AlignmentAnnotation[] aa = av.alignment.getAlignmentAnnotation();\r
-\r
-        int x = 0, y = 0;\r
-        int column=0;\r
-        char lastSS;\r
-        int lastSSX;\r
-        int iconOffset = av.charHeight / 2;\r
-        boolean validRes = false;\r
-\r
-        boolean [] graphGroupDrawn = new boolean[aa.length];\r
-\r
-\r
-        //\u03B2 \u03B1\r
-        for (int i = 0; i < aa.length; i++)\r
-        {\r
-            AlignmentAnnotation row = aa[i];\r
-\r
-            if (!row.visible)\r
-            {\r
-                continue;\r
-            }\r
-\r
-\r
-            lastSS = ' ';\r
-            lastSSX = 0;\r
-\r
-            if (row.graph>0)\r
-            {\r
-                if(row.graphGroup>-1 && graphGroupDrawn[ row.graphGroup ] )\r
-                  continue;\r
-\r
-                // this is so that we draw the characters below the graph\r
-                y += row.height;\r
-\r
-                if (row.hasText)\r
-                {\r
-                    y -= av.charHeight;\r
-                }\r
-            }\r
-\r
-            if (av.updatingConsensus && aa[i]==av.consensus)\r
-            {\r
-              y += av.charHeight;\r
-\r
-              g.drawImage(fadedImage,\r
-              0,y-row.height,imgWidth, y,\r
-              0,y-row.height,imgWidth, y, this);\r
-              g.setColor(Color.black);\r
-             // g.drawString("Calculating Consensus....",20, y-row.height/2);\r
-\r
-              continue;\r
-            }\r
-            else if (av.updatingConservation && aa[i].label.equals("Conservation"))\r
-            {\r
-\r
-              y += av.charHeight;\r
-              g.drawImage(fadedImage,\r
-                          0, y - row.height, imgWidth, y,\r
-                          0, y - row.height, imgWidth, y, this);\r
-\r
-              g.setColor(Color.black);\r
-            //  g.drawString("Calculating Conservation.....",20, y-row.height/2);\r
-\r
-              continue;\r
-            }\r
-            else if (av.updatingConservation && aa[i].label.equals("Quality"))\r
-            {\r
-\r
-              y += av.charHeight;\r
-              g.drawImage(fadedImage,\r
-                          0, y - row.height, imgWidth, y,\r
-                          0, y - row.height, imgWidth, y, this);\r
-              g.setColor(Color.black);\r
-             /// g.drawString("Calculating Quality....",20, y-row.height/2);\r
-\r
-              continue;\r
-            }\r
-\r
-\r
-            if (row.hasText)\r
-            {\r
-                iconOffset = av.charHeight / 2 + 4;\r
-            }\r
-            else\r
-            {\r
-                iconOffset = 0;\r
-            }\r
-\r
-            x = 0;\r
-            while (x < endRes-startRes)\r
-            {\r
-              if (av.hasHiddenColumns)\r
-              {\r
-                column = av.getColumnSelection().adjustForHiddenColumns(startRes+x);\r
-                if (column > row.annotations.length-1)\r
-                {\r
-                  break;\r
-                }\r
-              }\r
-              else\r
-                column = startRes+x;\r
-\r
-\r
-                if ((row.annotations.length <= column) ||\r
-                        (row.annotations[column] == null))\r
-                {\r
-                    validRes = false;\r
-                }\r
-                else\r
-                {\r
-                    validRes = true;\r
-                }\r
-\r
-\r
-                if (activeRow == i)\r
-                {\r
-                    g.setColor(Color.red);\r
-\r
-                    if (av.getColumnSelection() != null)\r
-                    {\r
-                        for (int n = 0; n < av.getColumnSelection().size(); n++)\r
-                        {\r
-                            int v = av.getColumnSelection().columnAt(n);\r
-\r
-                            if (v == column)\r
-                            {\r
-                                g.fillRect(x * av.charWidth, y,\r
-                                    av.charWidth, av.charHeight);\r
-                            }\r
-                        }\r
-                    }\r
-                }\r
-\r
-                if (av.validCharWidth && validRes &&\r
-                        (row.annotations[column].displayCharacter.length() > 0))\r
-                {\r
-\r
-                    int charOffset = (av.charWidth -\r
-                        fm.charWidth(row.annotations[column].displayCharacter.charAt(\r
-                                0))) / 2;\r
-                    g.setColor(row.annotations[column].colour);\r
-\r
-                    if (column == 0 || row.graph>0)\r
-                    {\r
-                        g.drawString(row.annotations[column].displayCharacter,\r
-                                     (x*av.charWidth)+charOffset,\r
-                            y + iconOffset );\r
-                    }\r
-                    else if (\r
-                        row.annotations[column - 1] == null\r
-                        ||(!row.annotations[column].displayCharacter.equals(\r
-                            row.annotations[column - 1].displayCharacter)\r
-                        ||\r
-                  (row.annotations[column].displayCharacter.length() <2 &&\r
-                   row.annotations[column].secondaryStructure==' ')))\r
-                    {\r
-                        g.drawString(row.annotations[column].displayCharacter,\r
-                                     x*av.charWidth+charOffset,\r
-                                     y + iconOffset );\r
-                    }\r
-                }\r
-\r
-                if (row.hasIcons)\r
-                {\r
-                    if (!validRes ||\r
-                            (row.annotations[column].secondaryStructure != lastSS))\r
-                    {\r
-                        switch (lastSS)\r
-                        {\r
-                        case 'H':\r
-                          g.setColor(HELIX_COLOUR);\r
-                          if (MAC)\r
-                          {\r
-                            //Off by 1 offset when drawing rects and ovals\r
-                            //to offscreen image on the MAC\r
-                            g.fillRoundRect(lastSSX, y + 4 + iconOffset,\r
-                                            (x*av.charWidth) - lastSSX, 7, 8, 8);\r
-                            break;\r
-                          }\r
-\r
-                          int sCol = (lastSSX / av.charWidth) + startRes;\r
-                          int x1 = lastSSX;\r
-                          int x2 = (x*av.charWidth);\r
-\r
-                         if(sCol==0 ||\r
-                            row.annotations[sCol-1]==null ||\r
-                            row.annotations[sCol-1].secondaryStructure!='H')\r
-                         {\r
-                           g.fillArc(lastSSX, y+4+iconOffset, av.charWidth, 8, 90,180) ;\r
-                           x1 += av.charWidth/2;\r
-                         }\r
-\r
-                          if(row.annotations[column]==null ||\r
-                             row.annotations[column].secondaryStructure!='H')\r
-                          {\r
-                            g.fillArc((x*av.charWidth)-av.charWidth,\r
-                                      y+4+iconOffset, av.charWidth, 8, 270,180);\r
-                            x2 -= av.charWidth/2;\r
-                          }\r
-\r
-                          g.fillRect(x1, y+4+iconOffset, x2-x1, 8);\r
-                              break;\r
-\r
-                        case 'E':\r
-                            g.setColor(SHEET_COLOUR);\r
-                            g.fillRect(lastSSX, y + 4 + iconOffset,\r
-                                (x*av.charWidth) - lastSSX - 4, 7);\r
-                            g.fillPolygon(new int[] { (x*av.charWidth) - 4,\r
-                                          (x*av.charWidth) - 4,\r
-                                          (x*av.charWidth) },\r
-                                new int[]\r
-                                {\r
-                                    y + iconOffset, y + 14 + iconOffset,\r
-                                    y + 8 + iconOffset\r
-                                }, 3);\r
-\r
-                            break;\r
-\r
-\r
-                        default:\r
-                            g.setColor(Color.gray);\r
-                            g.fillRect(lastSSX, y + 6 + iconOffset,\r
-                                (x*av.charWidth) - lastSSX, 2);\r
-\r
-                            break;\r
-                        }\r
-\r
-                        if (validRes)\r
-                        {\r
-                            lastSS = row.annotations[column].secondaryStructure;\r
-                        }\r
-                        else\r
-                        {\r
-                            lastSS = ' ';\r
-                        }\r
-\r
-                        lastSSX = (x*av.charWidth);\r
-                    }\r
-                }\r
-\r
-\r
-            column++;\r
-            x++;\r
-            }\r
-\r
-            if(column>=row.annotations.length)\r
-                column = row.annotations.length-1;\r
-\r
-          //  x ++;\r
-\r
-            if (row.hasIcons)\r
-            {\r
-              switch (lastSS)\r
-              {\r
-                case 'H':\r
-                  g.setColor(HELIX_COLOUR);\r
-                  if (MAC)\r
-                  {\r
-                    //Off by 1 offset when drawing rects and ovals\r
-                    //to offscreen image on the MAC\r
-                    g.fillRoundRect(lastSSX, y + 4 + iconOffset,\r
-                                    (x*av.charWidth) - lastSSX, 7, 8, 8);\r
-                    break;\r
-                  }\r
-\r
-                  int sCol = (lastSSX / av.charWidth) + startRes;\r
-                  int x1 = lastSSX;\r
-                  int x2 = (x*av.charWidth);\r
-\r
-                  if (sCol == 0 ||\r
-                      row.annotations[sCol - 1] == null ||\r
-                      row.annotations[sCol - 1].secondaryStructure != 'H')\r
-                  {\r
-                    g.fillArc(lastSSX, y + 4 + iconOffset, av.charWidth, 8, 90, 180);\r
-                    x1 += av.charWidth / 2;\r
-                  }\r
-\r
-                  if (row.annotations[column] == null ||\r
-                      row.annotations[column].secondaryStructure != 'H')\r
-                  {\r
-                    g.fillArc((x*av.charWidth) - av.charWidth,\r
-                              y + 4 + iconOffset, av.charWidth, 8, 270,\r
-                              180);\r
-                    x2 -= av.charWidth / 2;\r
-                  }\r
-\r
-                  g.fillRect(x1, y + 4 + iconOffset, x2 - x1, 8);\r
-\r
-                  break;\r
-\r
-                case 'E':\r
-                  g.setColor(SHEET_COLOUR);\r
-\r
-                  if (row.annotations[endRes] == null\r
-                      || row.annotations[endRes].secondaryStructure != 'E')\r
-                  {\r
-                    g.fillRect(lastSSX, y + 4 + iconOffset,\r
-                               (x*av.charWidth) - lastSSX - 4, 7);\r
-                    g.fillPolygon(new int[]\r
-                                  {(x*av.charWidth) - 4,\r
-                                  (x*av.charWidth) - 4,\r
-                                 (x*av.charWidth)},\r
-                                  new int[]\r
-                                  {\r
-                                  y + iconOffset, y + 14 + iconOffset,\r
-                                  y + 7 + iconOffset\r
-                    }, 3);\r
-                  }\r
-                  else\r
-                   {\r
-                     g.fillRect(lastSSX, y + 4 + iconOffset,\r
-                                (x+1) * av.charWidth - lastSSX, 7);\r
-                   }\r
-                  break;\r
-\r
-                default:\r
-                  g.setColor(Color.gray);\r
-                  g.fillRect(lastSSX, y + 6 + iconOffset,\r
-                             (x*av.charWidth) - lastSSX, 2);\r
-\r
-                  break;\r
-              }\r
-          }\r
-\r
-            if (row.graph>0 && row.graphHeight>0)\r
-            {\r
-                if(row.graph == AlignmentAnnotation.LINE_GRAPH )\r
-                {\r
-                  if(row.graphGroup>-1 && !graphGroupDrawn[row.graphGroup])\r
-                   {\r
-                     float groupmax=-999999, groupmin=9999999;\r
-                     for(int gg=0; gg<aa.length; gg++)\r
-                     {\r
-                       if(aa[gg].graphGroup!=row.graphGroup)\r
-                         continue;\r
-\r
-                       if(aa[gg]!=row)\r
-                         aa[gg].visible = false;\r
-\r
-                       if(aa[gg].graphMax>groupmax)\r
-                         groupmax = aa[gg].graphMax;\r
-                       if(aa[gg].graphMin<groupmin)\r
-                         groupmin = aa[gg].graphMin;\r
-                     }\r
-\r
-                     for (int gg = 0; gg < aa.length; gg++)\r
-                     {\r
-                       if (aa[gg].graphGroup == row.graphGroup)\r
-                       {\r
-                         drawLineGraph(g, aa[gg], startRes, endRes, y,\r
-                                       groupmin, groupmax,\r
-                                       row.graphHeight);\r
-                       }\r
-                     }\r
-\r
-                     graphGroupDrawn[ row.graphGroup ] = true;\r
-                   }\r
-                   else\r
-                     drawLineGraph(g, row, startRes, endRes,\r
-                                   y, row.graphMin, row.graphMax, row.graphHeight  );\r
-                }\r
-                else if(row.graph == AlignmentAnnotation.BAR_GRAPH )\r
-                   drawBarGraph(g, row, startRes, endRes,\r
-                                row.graphMin, row.graphMax, y);\r
-            }\r
-\r
-            if (row.graph>0 && row.hasText)\r
-            {\r
-                y += av.charHeight;\r
-            }\r
-\r
-            if (row.graph==0)\r
-            {\r
-                y += aa[i].height;\r
-            }\r
-        }\r
-    }\r
-\r
-    public void drawLineGraph(Graphics g, AlignmentAnnotation aa,\r
-                              int sRes, int eRes,\r
-                              int y,\r
-                              float min, float max,\r
-                              int graphHeight)\r
-    {\r
-      if(sRes>aa.annotations.length)\r
-        return;\r
-\r
-\r
-      int x = 0;\r
-\r
-      //Adjustment for fastpaint to left\r
-      if(eRes<av.endRes)\r
-        eRes++;\r
-\r
-      eRes = Math.min(eRes, aa.annotations.length);\r
-\r
-      if(sRes==0)\r
-      {\r
-        x++;\r
-      }\r
-\r
-      int y1=y, y2=y;\r
-      float range = max - min;\r
-\r
-      ////Draw origin\r
-      if(min<0)\r
-        y2 = y - (int)((0-min / range)*graphHeight);\r
-\r
-      g.setColor(Color.gray);\r
-      g.drawLine(x-av.charWidth,y2,(eRes-sRes+1)*av.charWidth,y2);\r
-\r
-      eRes = Math.min(eRes, aa.annotations.length);\r
-\r
-      int column;\r
-      int aaMax = aa.annotations.length-1;\r
-\r
-      while( x < eRes - sRes )\r
-      {\r
-        column = sRes + x;\r
-        if(av.hasHiddenColumns)\r
-        {\r
-          column = av.getColumnSelection().adjustForHiddenColumns(column);\r
-        }\r
-\r
-        if (column > aaMax)\r
-        {\r
-          break;\r
-        }\r
-\r
-        if(aa.annotations[column]==null || aa.annotations[column-1]==null)\r
-        {\r
-          x++;\r
-          continue;\r
-        }\r
-\r
-\r
-          g.setColor(aa.annotations[column].colour);\r
-          y1 = y - (int) (((aa.annotations[column-1].value-min) / range) * graphHeight);\r
-          y2 = y - (int) (((aa.annotations[column].value-min) / range) * graphHeight);\r
-\r
-          g.drawLine(x*av.charWidth-av.charWidth/2, y1, x*av.charWidth+av.charWidth/2, y2);\r
-          x ++;\r
-       }\r
-\r
-       if(aa.threshold!=null)\r
-       {\r
-           g.setColor(aa.threshold.colour);\r
-           Graphics2D g2 = (Graphics2D)g;\r
-           g2.setStroke(new BasicStroke(1,\r
-                                         BasicStroke.CAP_SQUARE,\r
-                                         BasicStroke.JOIN_ROUND, 3f,\r
-                                         new float[] { 5f, 3f }, 0f));\r
-\r
-           y2 = (int)(y - ((aa.threshold.value-min) / range)*graphHeight);\r
-           g.drawLine(0,y2,(eRes-sRes)*av.charWidth,y2);\r
-           g2.setStroke(new BasicStroke());\r
-      }\r
-    }\r
-\r
-    public void drawBarGraph(Graphics g, AlignmentAnnotation aa,\r
-                             int sRes, int eRes,\r
-                             float min, float max,\r
-                             int y)\r
-    {\r
-      if(sRes>aa.annotations.length)\r
-        return;\r
-\r
-      eRes = Math.min(eRes, aa.annotations.length);\r
-\r
-      int x=0, y1=y, y2=y;\r
-\r
-      float range = max - min;\r
-\r
-      if(min<0)\r
-        y2 = y - (int)((0-min / (range))*aa.graphHeight);\r
-\r
-      g.setColor(Color.gray);\r
-\r
-      g.drawLine(x,y2,(eRes-sRes)*av.charWidth,y2);\r
-\r
-      int column;\r
-      int aaMax = aa.annotations.length-1;\r
-\r
-      while( x < eRes-sRes )\r
-      {\r
-        column = sRes + x;\r
-        if(av.hasHiddenColumns)\r
-        {\r
-          column = av.getColumnSelection().adjustForHiddenColumns(column);\r
-        }\r
-\r
-        if(column > aaMax)\r
-        {\r
-            break;\r
-        }\r
-\r
-        if (aa.annotations[column] == null)\r
-        {\r
-          x ++;\r
-          continue;\r
-        }\r
-\r
-          g.setColor(aa.annotations[column].colour);\r
-          y1 = y - (int) (((aa.annotations[column].value-min) / (range)) * aa.graphHeight);\r
-\r
-          if(y1-y2>0)\r
-            g.fillRect(x*av.charWidth, y2, av.charWidth, y1-y2 );\r
-          else\r
-            g.fillRect(x*av.charWidth, y1, av.charWidth, y2-y1 );\r
-\r
-          x ++ ;\r
-\r
-      }\r
-      if(aa.threshold!=null)\r
-      {\r
-          g.setColor(aa.threshold.colour);\r
-          Graphics2D g2 = (Graphics2D)g;\r
-          g2.setStroke(new BasicStroke(1,\r
-                                        BasicStroke.CAP_SQUARE,\r
-                                        BasicStroke.JOIN_ROUND, 3f,\r
-                                        new float[] { 5f, 3f }, 0f));\r
-\r
-          y2 = (int)(y - ((aa.threshold.value-min) / range)*aa.graphHeight);\r
-          g.drawLine(0,y2,(eRes-sRes)*av.charWidth,y2);\r
-          g2.setStroke(new BasicStroke());\r
-      }\r
-    }\r
-\r
-    // used by overview window\r
-    public void drawGraph(Graphics g, AlignmentAnnotation aa, int width, int y, int sRes, int eRes)\r
-    {\r
-      eRes = Math.min(eRes, aa.annotations.length);\r
-      g.setColor(Color.white);\r
-      g.fillRect(0, 0, width, y);\r
-      g.setColor(new Color(0, 0, 180));\r
-\r
-      int x = 0, height;\r
-\r
-      for (int j = sRes; j < eRes; j++)\r
-      {\r
-        if (aa.annotations[j] != null)\r
-        {\r
-          g.setColor(aa.annotations[j].colour);\r
-\r
-          height = (int) ( (aa.annotations[j].value / aa.graphMax) * y);\r
-          if (height > y)\r
-            height = y;\r
-\r
-          g.fillRect(x, y - height, av.charWidth, height);\r
-        }\r
-          x += av.charWidth;\r
-      }\r
-    }\r
-\r
-}\r
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.9)
+ * Copyright (C) 2015 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.
+ *  
+ * 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/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ */
+package jalview.gui;
+
+import jalview.datamodel.AlignmentAnnotation;
+import jalview.datamodel.Annotation;
+import jalview.datamodel.ColumnSelection;
+import jalview.datamodel.SequenceI;
+import jalview.renderer.AnnotationRenderer;
+import jalview.renderer.AwtRenderPanelI;
+import jalview.util.MessageManager;
+
+import java.awt.AlphaComposite;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.FontMetrics;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Image;
+import java.awt.Rectangle;
+import java.awt.RenderingHints;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.AdjustmentEvent;
+import java.awt.event.AdjustmentListener;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
+import java.awt.event.MouseMotionListener;
+import java.awt.event.MouseWheelEvent;
+import java.awt.event.MouseWheelListener;
+import java.awt.image.BufferedImage;
+
+import javax.swing.JColorChooser;
+import javax.swing.JMenuItem;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JPopupMenu;
+import javax.swing.Scrollable;
+import javax.swing.SwingUtilities;
+import javax.swing.ToolTipManager;
+
+/**
+ * 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
+{
+  String HELIX = MessageManager.getString("label.helix");
+
+  String SHEET = MessageManager.getString("label.sheet");
+
+  /**
+   * For RNA secondary structure "stems" aka helices
+   */
+  String STEM = MessageManager.getString("label.rna_helix");
+
+  String LABEL = MessageManager.getString("label.label");
+
+  String REMOVE = MessageManager.getString("label.remove_annotation");
+
+  String COLOUR = MessageManager.getString("action.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 = 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.getAlabels().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,
+              MessageManager.getString("label.select_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;
+        if (evt.getActionCommand().equals(STEM))
+        {
+          aa[activeRow].showAllColLabels = 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 != 'S' ? type : label
+                .length() == 0 ? ' ' : label.charAt(0);
+        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.getScalePanel().mousePressed(evt);
+
+  }
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param evt
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void mouseReleased(MouseEvent evt)
+  {
+    graphStretch = -1;
+    graphStretchY = -1;
+    mouseDragging = false;
+    ap.getScalePanel().mouseReleased(evt);
+  }
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param evt
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void mouseEntered(MouseEvent evt)
+  {
+    ap.getScalePanel().mouseEntered(evt);
+  }
+
+  /**
+   * DOCUMENT ME!
+   * 
+   * @param evt
+   *          DOCUMENT ME!
+   */
+  @Override
+  public void mouseExited(MouseEvent evt)
+  {
+    ap.getScalePanel().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.getScalePanel().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(JvSwingUtils.wrapTooltip(true,
+                aa[row].annotations[res].description));
+      }
+      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.getCharHeight() / 5;
+    int charOffset = 0;
+    graphics.setColor(Color.black);
+    graphics.fillRect(x1, y1, av.getCharWidth(), av.getCharHeight());
+
+    if (av.validCharWidth)
+    {
+      graphics.setColor(Color.white);
+
+      char s = seq.getCharAt(res);
+
+      charOffset = (av.getCharWidth() - fm.charWidth(s)) / 2;
+      graphics.drawString(String.valueOf(s), charOffset + x1,
+              (y1 + av.getCharHeight()) - 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.getCharWidth();
+    if (imgWidth < 1)
+    {
+      return;
+    }
+    if (image == null || imgWidth != image.getWidth(this)
+            || image.getHeight(this) != getHeight())
+    {
+      try
+      {
+        image = new BufferedImage(imgWidth, ap.getAnnotationPanel()
+                .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.getCharWidth(), 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.getCharWidth();
+      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.getCharWidth(), 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.getAlabels() != null)
+    {
+      int sOffset = -ap.getAlabels().getScrollOffset();
+      int visHeight = sOffset + ap.annotationSpaceFillerHolder.getHeight();
+      bounds[0] = sOffset;
+      bounds[1] = visHeight;
+      return bounds;
+    }
+    else
+    {
+      return null;
+    }
+  }
+}