X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fappletgui%2FOverviewPanel.java;h=96138bfdc5b500af4834945a9aecc4cce17cb03d;hb=5010b95e8e250e744eefc5a1c976d70c044be32f;hp=b3c4a37ffb7e0eea6fbee6ebf4848d0b77e0b166;hpb=c2e5d3d1ebe3b283bdde15637c590721cd6c5637;p=jalview.git

diff --git a/src/jalview/appletgui/OverviewPanel.java b/src/jalview/appletgui/OverviewPanel.java
index b3c4a37..96138bf 100755
--- a/src/jalview/appletgui/OverviewPanel.java
+++ b/src/jalview/appletgui/OverviewPanel.java
@@ -29,7 +29,9 @@ import jalview.viewmodel.ViewportListenerI;
 
 import java.awt.BorderLayout;
 import java.awt.CheckboxMenuItem;
+import java.awt.Cursor;
 import java.awt.Dimension;
+import java.awt.Frame;
 import java.awt.Panel;
 import java.awt.PopupMenu;
 import java.awt.event.ComponentAdapter;
@@ -57,6 +59,8 @@ public class OverviewPanel extends Panel implements Runnable,
 
   private boolean updateRunning = false;
 
+  private boolean draggingBox = false;
+
   public OverviewPanel(AlignmentPanel alPanel)
   {
     this.av = alPanel.av;
@@ -64,7 +68,8 @@ public class OverviewPanel extends Panel implements Runnable,
     setLayout(null);
 
     od = new OverviewDimensionsShowHidden(av.getRanges(),
-            (av.isShowAnnotation() && av.getSequenceConsensusHash() != null));
+            (av.isShowAnnotation()
+                    && av.getSequenceConsensusHash() != null));
 
     oviewCanvas = new OverviewCanvas(od, av);
     setLayout(new BorderLayout());
@@ -109,7 +114,8 @@ public class OverviewPanel extends Panel implements Runnable,
   @Override
   public void mouseClicked(MouseEvent evt)
   {
-    if ((evt.getModifiers() & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK)
+    if ((evt.getModifiers()
+            & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK)
     {
       showPopupMenu(evt);
     }
@@ -118,29 +124,69 @@ public class OverviewPanel extends Panel implements Runnable,
   @Override
   public void mouseMoved(MouseEvent evt)
   {
+    if (od.isPositionInBox(evt.getX(), evt.getY()))
+    {
+      this.getParent()
+              .setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
+    }
+    else
+    {
+      this.getParent()
+              .setCursor(
+                      Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
+    }
   }
 
   @Override
   public void mousePressed(MouseEvent evt)
   {
-    mouseAction(evt);
+    if ((evt.getModifiers()
+            & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK)
+    {
+      if (!Platform.isAMac())
+      {
+        showPopupMenu(evt);
+      }
+    }
+    else
+    {
+      // don't do anything if the mouse press is in the overview's box
+      // (wait to see if it's a drag instead)
+      // otherwise update the viewport
+      if (!od.isPositionInBox(evt.getX(), evt.getY()))
+      { 
+    	draggingBox = false;
+
+        // display drag cursor at mouse position
+        setCursor(Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR));
+
+        od.updateViewportFromMouse(evt.getX(), evt.getY(),
+                av.getAlignment().getHiddenSequences(),
+                av.getAlignment().getHiddenColumns());
+        getParent()
+                .setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
+      }
+      else
+      {
+        draggingBox = true;
+        od.setDragPoint(evt.getX(), evt.getY(),
+                av.getAlignment().getHiddenSequences(),
+                av.getAlignment().getHiddenColumns());
+      }
+    }
   }
 
   @Override
   public void mouseReleased(MouseEvent evt)
   {
-    mouseAction(evt);
+    draggingBox = false;
   }
 
   @Override
   public void mouseDragged(MouseEvent evt)
   {
-    mouseAction(evt);
-  }
-
-  private void mouseAction(MouseEvent evt)
-  {
-    if ((evt.getModifiers() & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK)
+    if ((evt.getModifiers()
+            & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK)
     {
       if (!Platform.isAMac())
       {
@@ -149,9 +195,21 @@ public class OverviewPanel extends Panel implements Runnable,
     }
     else
     {
-      od.updateViewportFromMouse(evt.getX(), evt.getY(), av.getAlignment()
-              .getHiddenSequences(), av.getAlignment().getHiddenColumns());
-      ap.paintAlignment(false);
+      if (draggingBox)
+      {
+        // set the mouse position as a fixed point in the box
+        // and drag relative to that position
+        od.adjustViewportFromMouse(evt.getX(), evt.getY(),
+                av.getAlignment().getHiddenSequences(),
+                av.getAlignment().getHiddenColumns());
+      }
+      else
+      {
+        od.updateViewportFromMouse(evt.getX(), evt.getY(),
+                av.getAlignment().getHiddenSequences(),
+                av.getAlignment().getHiddenColumns());
+      }
+      ap.paintAlignment(false, false);
     }
   }
 
@@ -160,6 +218,14 @@ public class OverviewPanel extends Panel implements Runnable,
    */
   public void updateOverviewImage()
   {
+    if (oviewCanvas == null)
+    {
+      /*
+       * panel has been disposed
+       */
+      return;
+    }
+
     if ((getSize().width > 0) && (getSize().height > 0))
     {
       od.setWidth(getSize().width);
@@ -187,8 +253,8 @@ public class OverviewPanel extends Panel implements Runnable,
   public void run()
   {
     oviewCanvas.draw(av.isShowSequenceFeatures(),
-            (av.isShowAnnotation() && av
-                    .getAlignmentConservationAnnotation() != null),
+            (av.isShowAnnotation()
+                    && av.getAlignmentConservationAnnotation() != null),
             ap.seqPanel.seqCanvas.getFeatureRenderer());
     setBoxPosition();
   }
@@ -200,9 +266,8 @@ public class OverviewPanel extends Panel implements Runnable,
    */
   private void setBoxPosition()
   {
-    od.setBoxPosition(av.getAlignment()
-.getHiddenSequences(), av
-            .getAlignment().getHiddenColumns());
+    od.setBoxPosition(av.getAlignment().getHiddenSequences(),
+            av.getAlignment().getHiddenColumns());
     repaint();
   }
 
@@ -244,17 +309,41 @@ public class OverviewPanel extends Panel implements Runnable,
     {
       showHidden = false;
       od = new OverviewDimensionsHideHidden(av.getRanges(),
-              (av.isShowAnnotation() && av
-                      .getAlignmentConservationAnnotation() != null));
+              (av.isShowAnnotation()
+                      && av.getAlignmentConservationAnnotation() != null));
     }
     else
     {
       showHidden = true;
       od = new OverviewDimensionsShowHidden(av.getRanges(),
-              (av.isShowAnnotation() && av
-                      .getAlignmentConservationAnnotation() != null));
+              (av.isShowAnnotation()
+                      && av.getAlignmentConservationAnnotation() != null));
     }
     oviewCanvas.resetOviewDims(od);
     updateOverviewImage();
   }
+
+  /**
+   * Removes this object as a property change listener, and nulls references
+   */
+  protected void dispose()
+  {
+    try
+    {
+      av.getRanges().removePropertyChangeListener(this);
+      Frame parent = (Frame) getParent();
+      parent.dispose();
+      parent.setVisible(false);
+    } finally
+    {
+      av = null;
+      if (oviewCanvas != null)
+      {
+        oviewCanvas.dispose();
+      }
+      oviewCanvas = null;
+      ap = null;
+      od = null;
+    }
+  }
 }