Export annotations as Jalview format
[jalview.git] / src / jalview / gui / AnnotationLabels.java
index 9b29451..5667f84 100755 (executable)
-\r
+/*\r
+ * Jalview - A Sequence Alignment Editor and Viewer\r
+ * Copyright (C) 2005 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle\r
+ *\r
+ * This program is free software; you can redistribute it and/or\r
+ * modify it under the terms of the GNU General Public License\r
+ * as published by the Free Software Foundation; either version 2\r
+ * of the License, or (at your option) any later version.\r
+ *\r
+ * This program is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * You should have received a copy of the GNU General Public License\r
+ * along with this program; if not, write to the Free Software\r
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA\r
+ */\r
 package jalview.gui;\r
 \r
-import javax.swing.*;\r
-import java.awt.event.*;\r
+import jalview.datamodel.*;\r
+\r
 import java.awt.*;\r
+import java.awt.event.*;\r
 import java.awt.image.*;\r
-import jalview.datamodel.*;\r
 \r
-public class AnnotationLabels extends JPanel implements MouseListener, MouseMotionListener, ActionListener\r
+import javax.swing.*;\r
+\r
+\r
+/**\r
+ * DOCUMENT ME!\r
+ *\r
+ * @author $author$\r
+ * @version $Revision$\r
+ */\r
+public class AnnotationLabels extends JPanel implements MouseListener,\r
+    MouseMotionListener, ActionListener\r
 {\r
-  boolean active = false;\r
-  Image image;\r
-  AlignmentPanel ap ;\r
-  boolean resizing = false;\r
-  int oldY, mouseX;\r
-  static String ADDNEW = "Add new row";\r
-  static String HIDE = "Hide this row";\r
-  static String DELETE = "Delete this row";\r
-  static String SHOWALL="Show all hidden rows";\r
-  int selectedRow = 0;\r
-  int scrollOffset = 0;\r
-\r
-  public AnnotationLabels(AlignmentPanel ap)\r
-  {\r
-    this.ap = ap;\r
-\r
-    java.net.URL url = getClass().getResource("/images/idwidth.gif");\r
-    Image temp = null;\r
-    if (url != null)\r
-      temp = java.awt.Toolkit.getDefaultToolkit().createImage(url);\r
-\r
-    try\r
+    static String ADDNEW = "Add New Row";\r
+    static String HIDE = "Hide This Row";\r
+    static String DELETE = "Delete This Row";\r
+    static String SHOWALL = "Show All Hidden Rows";\r
+    static String OUTPUT_TEXT = "Export Annotation";\r
+    boolean resizePanel = false;\r
+    Image image;\r
+    AlignmentPanel ap;\r
+    AlignViewport av;\r
+    boolean resizing = false;\r
+    MouseEvent dragEvent;\r
+    int oldY;\r
+    int selectedRow;\r
+    int scrollOffset = 0;\r
+    Font font = new Font("Arial", Font.PLAIN, 11);\r
+\r
+\r
+    /**\r
+     * Creates a new AnnotationLabels object.\r
+     *\r
+     * @param ap DOCUMENT ME!\r
+     */\r
+    public AnnotationLabels(AlignmentPanel ap)\r
+    {\r
+        this.ap = ap;\r
+        av = ap.av;\r
+\r
+        java.net.URL url = getClass().getResource("/images/idwidth.gif");\r
+        Image temp = null;\r
+\r
+        if (url != null)\r
+        {\r
+            temp = java.awt.Toolkit.getDefaultToolkit().createImage(url);\r
+        }\r
+\r
+        try\r
+        {\r
+            MediaTracker mt = new MediaTracker(this);\r
+            mt.addImage(temp, 0);\r
+            mt.waitForID(0);\r
+        }\r
+        catch (Exception ex)\r
+        {\r
+        }\r
+\r
+        BufferedImage bi = new BufferedImage(temp.getHeight(this),\r
+                temp.getWidth(this), BufferedImage.TYPE_INT_RGB);\r
+        Graphics2D g = (Graphics2D) bi.getGraphics();\r
+        g.rotate(Math.toRadians(90));\r
+        g.drawImage(temp, 0, -bi.getWidth(this), this);\r
+        image = (Image) bi;\r
+\r
+        addMouseListener(this);\r
+        addMouseMotionListener(this);\r
+    }\r
+\r
+    public AnnotationLabels(AlignViewport av)\r
     {\r
-      MediaTracker mt = new MediaTracker(this);\r
-      mt.addImage(temp, 0);\r
-      mt.waitForID(0);\r
+      this.av = av;\r
     }\r
-    catch (Exception ex) {}\r
-\r
-    BufferedImage bi = new BufferedImage(temp.getHeight(this), temp.getWidth(this),\r
-                                         BufferedImage.TYPE_INT_RGB);\r
-    Graphics2D g = (Graphics2D) bi.getGraphics();\r
-    g.rotate(Math.toRadians(90));\r
-    g.drawImage(temp, 0, -bi.getWidth(this), this);\r
-    image = (Image) bi;\r
-\r
-    addMouseListener(this);\r
-    addMouseMotionListener(this);\r
-  }\r
-\r
-  public void setScrollOffset(int y)\r
-  {\r
-    scrollOffset = y;\r
-    repaint();\r
-  }\r
-\r
-  public void actionPerformed(ActionEvent evt)\r
-  {\r
-    AlignmentAnnotation[] aa = ap.av.alignment.getAlignmentAnnotation();\r
-\r
-    if(evt.getActionCommand().equals(ADDNEW))\r
+\r
+    /**\r
+     * DOCUMENT ME!\r
+     *\r
+     * @param y DOCUMENT ME!\r
+     */\r
+    public void setScrollOffset(int y)\r
     {\r
-      String label = JOptionPane.showInputDialog(this, "Label for annotation");\r
-      if(label==null)\r
-        label = "";\r
-      ap.av.alignment.addAnnotation(new AlignmentAnnotation\r
-                                      (label,\r
-                                       "New description",\r
-                                       new Annotation[ap.av.alignment.getWidth()]));\r
+        scrollOffset = y;\r
+        repaint();\r
     }\r
-   else if(evt.getActionCommand().equals(HIDE))\r
-   {\r
-     aa[selectedRow].visible = false;\r
-   }\r
-   else if(evt.getActionCommand().equals(DELETE))\r
-   {\r
-     ap.av.alignment.deleteAnnotation(aa[selectedRow]);\r
-   }\r
-   else if(evt.getActionCommand().equals(SHOWALL))\r
-   {\r
-       for(int i=0; i<aa.length; i++)\r
-         aa[i].visible = true;\r
-   }\r
-\r
-   ap.annotationPanel.adjustPanelHeight();\r
-   ap.repaint();\r
-\r
-  }\r
-\r
-  public void mousePressed(MouseEvent evt)\r
-  {\r
-    int y = evt.getY() - scrollOffset;\r
 \r
+    void getSelectedRow(int y)\r
+    {\r
+      int height = 0;\r
       AlignmentAnnotation[] aa = ap.av.alignment.getAlignmentAnnotation();\r
-       if(aa==null || aa.length==0)\r
-       {\r
-            JPopupMenu pop = new JPopupMenu("Annotations");\r
-            JMenuItem item = new JMenuItem(ADDNEW);\r
-            item.addActionListener(this);\r
-            pop.add(item);\r
-            pop.show(this, evt.getX(), evt.getY());\r
-            return;\r
-       }\r
-\r
-       int height = 0;\r
-       for (int i = 0; i < aa.length; i++)\r
-       {\r
-         if(!aa[i].visible)\r
-           continue;\r
-\r
-         height += aa[i].height;\r
-         if(y<height)\r
-         {\r
-           selectedRow = i;\r
-           break;\r
-         }\r
-       }\r
-\r
-      JPopupMenu pop = new JPopupMenu("Annotations");\r
-      JMenuItem item = new JMenuItem(ADDNEW);\r
-      item.addActionListener(this);\r
-      pop.add(item);\r
-      item = new JMenuItem(HIDE);\r
-      item.addActionListener(this);\r
-      pop.add(item);\r
-      item = new JMenuItem(DELETE);\r
-      item.addActionListener(this);\r
-      pop.add(item);\r
-      item = new JMenuItem(SHOWALL);\r
-      item.addActionListener(this);\r
-      pop.add(item);\r
-      pop.show(this, evt.getX(), evt.getY());\r
-\r
-    oldY = evt.getY();\r
-  }\r
-\r
-  public void mouseReleased(MouseEvent evt){ active = false; repaint(); }\r
-  public void mouseEntered(MouseEvent evt) { active = true;  repaint();}\r
-  public void mouseExited(MouseEvent evt)  { active = false; repaint();}\r
-  public void mouseDragged(MouseEvent evt)\r
-  {\r
-    active = true;\r
-    Dimension d = ap.annotationScroller.getPreferredSize();\r
-    int dif = evt.getY() - oldY;\r
-\r
-    dif /= ap.av.charHeight;\r
-    dif *= ap.av.charHeight;\r
-\r
-    if(d.height-dif>20)\r
+\r
+      for (int i = 0; i < aa.length; i++)\r
+      {\r
+        if (!aa[i].visible)\r
+        {\r
+          continue;\r
+        }\r
+\r
+        height += aa[i].height;\r
+\r
+        if (y < height)\r
+        {\r
+          selectedRow = i;\r
+\r
+          break;\r
+        }\r
+      }\r
+    }\r
+\r
+    /**\r
+     * DOCUMENT ME!\r
+     *\r
+     * @param evt DOCUMENT ME!\r
+     */\r
+    public void actionPerformed(ActionEvent evt)\r
     {\r
-      ap.annotationScroller.setPreferredSize(new Dimension(d.width,d.height - dif));\r
-      d = ap.annotationSpaceFillerHolder.getPreferredSize();\r
-      ap.annotationSpaceFillerHolder.setPreferredSize(new Dimension(d.width,d.height - dif));\r
-      ap.repaint();\r
+        int dif = 0;\r
+        AlignmentAnnotation[] aa = ap.av.alignment.getAlignmentAnnotation();\r
+\r
+        if (evt.getActionCommand().equals(ADDNEW))\r
+        {\r
+            String label = JOptionPane.showInputDialog(this,\r
+                    "Label for annotation");\r
+\r
+            if (label == null)\r
+            {\r
+                label = "";\r
+            }\r
+\r
+            AlignmentAnnotation newAnnotation = new AlignmentAnnotation(label,\r
+                    "New description",\r
+                    new Annotation[ap.av.alignment.getWidth()]);\r
+\r
+            ap.av.alignment.addAnnotation(newAnnotation);\r
+            ap.av.alignment.setAnnotationIndex(newAnnotation, 0);\r
+            dif = aa[aa.length - 1].height;\r
+        }\r
+        else if (evt.getActionCommand().equals(HIDE))\r
+        {\r
+            aa[selectedRow].visible = false;\r
+\r
+            if (aa[selectedRow].label.equals("Conservation"))\r
+            {\r
+                ap.av.showConservation = false;\r
+            }\r
+\r
+            if (aa[selectedRow].label.equals("Quality"))\r
+            {\r
+                ap.av.showQuality = false;\r
+            }\r
+\r
+            if (aa[selectedRow].label.equals("Consensus"))\r
+            {\r
+                ap.av.showIdentity = false;\r
+            }\r
+\r
+            dif = aa[selectedRow].height * -1;\r
+        }\r
+        else if (evt.getActionCommand().equals(DELETE))\r
+        {\r
+            ap.av.alignment.deleteAnnotation(aa[selectedRow]);\r
+            dif = aa[selectedRow].height * -1;\r
+        }\r
+        else if (evt.getActionCommand().equals(SHOWALL))\r
+        {\r
+            for (int i = 0; i < aa.length; i++)\r
+            {\r
+                if (!aa[i].visible)\r
+                {\r
+                    dif += aa[i].height;\r
+                    aa[i].visible = true;\r
+                }\r
+            }\r
+        }\r
+        else if (evt.getActionCommand().equals(OUTPUT_TEXT))\r
+        {\r
+          new AnnotationExporter().exportAnnotations(\r
+              ap,\r
+              new AlignmentAnnotation[]\r
+              {aa[selectedRow]}\r
+              );\r
+        }\r
+\r
+\r
+        ap.annotationPanel.adjustPanelHeight();\r
+        ap.annotationScroller.validate();\r
+        ap.repaint();\r
     }\r
-    ap.addNotify();\r
-  }\r
 \r
-  public void mouseMoved(MouseEvent evt)   {}\r
-  public void mouseClicked(MouseEvent evt) {}\r
+    /**\r
+     * DOCUMENT ME!\r
+     *\r
+     * @param evt DOCUMENT ME!\r
+     */\r
+    public void mousePressed(MouseEvent evt)\r
+    {\r
+        getSelectedRow(evt.getY() - scrollOffset);\r
+        oldY = evt.getY();\r
+    }\r
 \r
-  public void paintComponent(Graphics g1)\r
-  {\r
-    Graphics2D g = (Graphics2D)g1;\r
-    g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);\r
+    /**\r
+     * DOCUMENT ME!\r
+     *\r
+     * @param evt DOCUMENT ME!\r
+     */\r
+    public void mouseReleased(MouseEvent evt)\r
+    {\r
+        int start = selectedRow;\r
+        getSelectedRow(evt.getY() - scrollOffset);\r
+        int end = selectedRow;\r
 \r
-    drawComponent(g);\r
-  }\r
+        if(start!=end)\r
+        {\r
+          //Swap these annotations\r
+          AlignmentAnnotation startAA = ap.av.alignment.getAlignmentAnnotation()[start];\r
+          AlignmentAnnotation endAA = ap.av.alignment.getAlignmentAnnotation()[end];\r
 \r
-  public void drawComponent(Graphics2D g)\r
-  {\r
-    FontMetrics fm = g.getFontMetrics(g.getFont());\r
-    g.setColor(Color.white);\r
-    g.fillRect(0,0, getWidth(), getHeight());\r
 \r
-    g.translate(0, scrollOffset);\r
-    g.setColor(Color.black);\r
+          ap.av.alignment.getAlignmentAnnotation()[end] = startAA;\r
+          ap.av.alignment.getAlignmentAnnotation()[start] = endAA;\r
+        }\r
 \r
-   AlignmentAnnotation[] aa = ap.av.alignment.getAlignmentAnnotation();\r
-   int y = g.getFont().getSize();\r
-   int x = 0;\r
+        resizePanel = false;\r
+        dragEvent = null;\r
+        repaint();\r
+        ap.annotationPanel.repaint();\r
+    }\r
+\r
+    /**\r
+     * DOCUMENT ME!\r
+     *\r
+     * @param evt DOCUMENT ME!\r
+     */\r
+    public void mouseEntered(MouseEvent evt)\r
+    {\r
+      if(evt.getY()<10)\r
+      {\r
+        resizePanel = true;\r
+        repaint();\r
+      }\r
+    }\r
+\r
+    /**\r
+     * DOCUMENT ME!\r
+     *\r
+     * @param evt DOCUMENT ME!\r
+     */\r
+    public void mouseExited(MouseEvent evt)\r
+    {       }\r
+\r
+    /**\r
+     * DOCUMENT ME!\r
+     *\r
+     * @param evt DOCUMENT ME!\r
+     */\r
+    public void mouseDragged(MouseEvent evt)\r
+    {\r
+      dragEvent = evt;\r
+\r
+      if (resizePanel)\r
+      {\r
+        Dimension d = ap.annotationScroller.getPreferredSize();\r
+        int dif = evt.getY() - oldY;\r
+\r
+        dif /= ap.av.charHeight;\r
+        dif *= ap.av.charHeight;\r
+\r
+        if ( (d.height - dif) > 20)\r
+        {\r
+          ap.annotationScroller.setPreferredSize(new Dimension(d.width,\r
+              d.height - dif));\r
+          d = ap.annotationSpaceFillerHolder.getPreferredSize();\r
+          ap.annotationSpaceFillerHolder.setPreferredSize(new Dimension(\r
+              d.width, d.height - dif));\r
+          ap.repaint();\r
+        }\r
+\r
+        ap.addNotify();\r
+      }\r
+      else\r
+        repaint();\r
+    }\r
+\r
+    /**\r
+     * DOCUMENT ME!\r
+     *\r
+     * @param evt DOCUMENT ME!\r
+     */\r
+    public void mouseMoved(MouseEvent evt)\r
+    {\r
+      resizePanel = evt.getY()<10;\r
 \r
-   if(aa!=null)\r
-   for(int i=0; i<aa.length; i++)\r
-   {\r
-     if(!aa[i].visible)\r
-       continue;\r
+      repaint();\r
+    }\r
 \r
-     x = getWidth() - fm.stringWidth(aa[i].label)-3;\r
+    /**\r
+     * DOCUMENT ME!\r
+     *\r
+     * @param evt DOCUMENT ME!\r
+     */\r
+    public void mouseClicked(MouseEvent evt)\r
+    {\r
+       if(!SwingUtilities.isRightMouseButton(evt))\r
+         return;\r
 \r
-     if(aa[i].isGraph)\r
-       y+=(aa[i].height/3);\r
+        AlignmentAnnotation[] aa = ap.av.alignment.getAlignmentAnnotation();\r
 \r
-     g.drawString(aa[i].label, x, y);\r
+        if ((aa == null) || (aa.length == 0))\r
+        {\r
+            JPopupMenu pop = new JPopupMenu("Annotations");\r
+            JMenuItem item = new JMenuItem(ADDNEW);\r
+            item.addActionListener(this);\r
+            pop.add(item);\r
+            pop.show(this, evt.getX(), evt.getY());\r
 \r
-     if(aa[i].isGraph)\r
-       y+=(2*aa[i].height/3);\r
-    else\r
-       y+=aa[i].height;\r
-   }\r
+            return;\r
+        }\r
+\r
+\r
+        JPopupMenu pop = new JPopupMenu("Annotations");\r
+        JMenuItem item = new JMenuItem(ADDNEW);\r
+        item.addActionListener(this);\r
+        pop.add(item);\r
+        item = new JMenuItem(HIDE);\r
+        item.addActionListener(this);\r
+        pop.add(item);\r
+        item = new JMenuItem(DELETE);\r
+        item.addActionListener(this);\r
+        pop.add(item);\r
+        item = new JMenuItem(SHOWALL);\r
+        item.addActionListener(this);\r
+        pop.add(item);\r
+        item = new JMenuItem(OUTPUT_TEXT);\r
+        item.addActionListener(this);\r
+        pop.add(item);\r
+\r
+        if (aa[selectedRow].label.equals("Consensus"))\r
+        {\r
+          pop.addSeparator();\r
+          final JCheckBoxMenuItem cbmi = new JCheckBoxMenuItem(\r
+              "Ignore Gaps In Consensus",\r
+              ap.av.getIgnoreGapsConsensus());\r
+          cbmi.addActionListener(new ActionListener()\r
+              {public void actionPerformed(ActionEvent e)\r
+               {\r
+                 ap.av.setIgnoreGapsConsensus(cbmi.getState());\r
+                 ap.repaint();\r
+               }\r
+              });\r
+          pop.add(cbmi);\r
+\r
+        }\r
+\r
+        pop.show(this, evt.getX(), evt.getY());\r
+    }\r
 \r
-   if (active)\r
-   {\r
-     if (image != null)\r
-       g.drawImage(image, 2, 0, this);\r
-   }\r
+    /**\r
+     * DOCUMENT ME!\r
+     *\r
+     * @param g1 DOCUMENT ME!\r
+     */\r
+    public void paintComponent(Graphics g)\r
+    {\r
 \r
-   if (aa == null || aa.length<1)\r
-   {\r
-     g.drawString("Right click", 2, 8);\r
-     g.drawString("to add annotation", 2, 18);\r
-   }\r
+        int width = getWidth();\r
+        if(width==0)\r
+         width = ap.calculateIdWidth().width + 4;\r
 \r
+       Graphics2D g2 = (Graphics2D) g;\r
+       if(av.antiAlias)\r
+        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,\r
+            RenderingHints.VALUE_ANTIALIAS_ON);\r
 \r
+       drawComponent(g2, width);\r
 \r
-  }\r
+    }\r
 \r
+    /**\r
+     * DOCUMENT ME!\r
+     *\r
+     * @param g DOCUMENT ME!\r
+     */\r
+    public void drawComponent(Graphics g, int width)\r
+    {\r
+        if(av.getFont().getSize()<10)\r
+          g.setFont(new Font("Arial", Font.PLAIN, av.getFont().getSize()-1));\r
+        else\r
+          g.setFont(font);\r
+\r
+        FontMetrics fm = g.getFontMetrics(g.getFont());\r
+        g.setColor(Color.white);\r
+        g.fillRect(0, 0, getWidth(), getHeight());\r
+\r
+        g.translate(0, scrollOffset);\r
+        g.setColor(Color.black);\r
+\r
+        AlignmentAnnotation[] aa = av.alignment.getAlignmentAnnotation();\r
+        int fontHeight = g.getFont().getSize();\r
+        int y = fontHeight;\r
+        int x = 0;\r
+        int graphExtras = 0;\r
+\r
+\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
+                x = width - fm.stringWidth(aa[i].label) - 3;\r
+\r
+                if (aa[i].graph>0)\r
+                {\r
+                    graphExtras = y;\r
+\r
+                    y += (aa[i].height / 3);\r
+\r
+                    if(aa[i].graphGroup<0)\r
+                        graphExtras = y + fontHeight;\r
+                }\r
+\r
+                if(aa[i].graphGroup>-1)\r
+                {\r
+                  int groupSize = 0;\r
+                  for (int gg = 0; gg < aa.length; gg++)\r
+                  {\r
+                    if (aa[gg].graphGroup == aa[i].graphGroup)\r
+                      groupSize++;\r
+                  }\r
+\r
+                  if(groupSize * (fontHeight+8) < aa[i].height)\r
+                    graphExtras += (aa[i].height -( groupSize * (fontHeight+8)) )/2;\r
+\r
+                 for(int gg=0; gg<aa.length; gg++)\r
+                 {\r
+                   if(aa[gg].graphGroup==aa[i].graphGroup)\r
+                   {\r
+                     x = width - fm.stringWidth(aa[gg].label) - 3;\r
+                     g.drawString(aa[gg].label, x, graphExtras );\r
+                     if(aa[gg].annotations[0]!=null)\r
+                       g.setColor(aa[gg].annotations[0].colour);\r
+\r
+                     g.drawLine( x, graphExtras+3,\r
+                                 x+fm.stringWidth(aa[gg].label),\r
+                                 graphExtras+3);\r
+\r
+                     g.setColor(Color.black);\r
+                     graphExtras += fontHeight+8;\r
+                   }\r
+                 }\r
+                }\r
+                else\r
+                  g.drawString(aa[i].label, x, y);\r
+\r
+                if (aa[i].graph>0)\r
+                {\r
+                /*  if (aa[i].graphLines != null)\r
+                  {\r
+                    for (int gl = 0; gl < aa[i].graphLines.size(); gl++)\r
+                    {\r
+                       x = width - fm.stringWidth(aa[i].getGraphLine(gl).label) - 3;\r
+                      g.drawString(aa[i].getGraphLine(gl).label, x, graphExtras);\r
+                      g.setColor(aa[i].getGraphLine(gl).colour);\r
+                      Graphics2D g2 = (Graphics2D) g;\r
+                      g2.setStroke(new BasicStroke(1,\r
+                          BasicStroke.CAP_SQUARE,\r
+                          BasicStroke.JOIN_ROUND, 3f,\r
+                          new float[]\r
+                          {5f, 3f}, 0f));\r
+\r
+                      graphExtras += 3;\r
+\r
+                      g.drawLine(x, graphExtras,\r
+                                 x+fm.stringWidth(aa[i].label),\r
+                                 graphExtras);\r
+                      g2.setStroke(new BasicStroke());\r
+                    }\r
+                  }*/\r
+                    y += ((2 * aa[i].height) / 3);\r
+                }\r
+                else\r
+                {\r
+                    y += aa[i].height;\r
+                }\r
+            }\r
+        }\r
+\r
+        if (resizePanel)\r
+        {\r
+          g.drawImage(image, 2, 0 - scrollOffset, this);\r
+        }\r
+        else if (dragEvent != null)\r
+        {\r
+          g.setColor(Color.lightGray);\r
+          g.drawString(aa[selectedRow].label, dragEvent.getX(), dragEvent.getY() - scrollOffset);\r
+        }\r
+\r
+\r
+        if ((aa == null) || (aa.length < 1))\r
+        {\r
+            g.drawString("Right click", 2, 8);\r
+            g.drawString("to add annotation", 2, 18);\r
+        }\r
+    }\r
 }\r