Fix for panning problem

Hi Don, et. al. -

Here is a fix I made for the panning problem. It allows me to customize the
amount the map pans when I click on one of the panning buttons. The fix
ultimately lies in the actionPerformed of the NavigatePanel class. I've
created
a subclass of the NavigatePanel for our own purposes and wired that into a
customized OMToolSet object (extending both of those...I made no changes
to the OpenMap source). I use our custom OMToolSet object in the
openmap.properties file now. The MICAProperties object is a statically
accessed object I came up with for accessing the OpenMap properties
object. So for a real fix, the OpenMap properties will need to be accessed
if you want it customizeable through the props file.

Here is what the new actionPerformed method looks like along with a new
firePaneEvent method. Also, because this is a customized NavigatePanel
and I didn't want to have to worry about where the images where for the
navigation UI were, I overloaded the addImageIcon method. I included that
one as well. That way you can just pick up the images in the OpenMap
.jar file.

  public void actionPerformed(java.awt.event.ActionEvent e) {
    
    String command = e.getActionCommand();

    float panf = 45.0f;
    Object ob = MICAProperties.get("mica.panfactor");
    if(ob != null)
    {
      String panamt = (String)ob;
      panf = Float.valueOf(panamt).floatValue();
    }

    if (command.equals(panNWCmd)) {
      firePanEvent(-45f, panf);
    } else if (command.equals(panNCmd)) {
      firePanEvent(0f, panf);
    } else if (command.equals(panNECmd)) {
      firePanEvent(45f, panf);
    } else if (command.equals(panECmd)) {
      firePanEvent(90f, panf);
    } else if (command.equals(panSECmd)) {
      firePanEvent(135f, panf);
    } else if (command.equals(panSCmd)) {
      firePanEvent(180f, panf);
    } else if (command.equals(panSWCmd)) {
      firePanEvent(-135f, panf);
    } else if (command.equals(panWCmd)) {
      firePanEvent(-90f, panf);
    } else if (command.equals(centerCmd)) {
      // go back to the center point
      
      float lat;
      float lon;
      if (useDefaultCenter) {
        lat = defaultCenterLat;
        lon = defaultCenterLon;
      } else {
        lat = Environment.getFloat(Environment.Latitude, 0f);
        lon = Environment.getFloat(Environment.Longitude, 0f);
      }
      fireCenterEvent(lat, lon);
    }
  }

  protected synchronized void firePanEvent(float az, float c) {
    System.out.println("Panning..." + c);
    panDelegate.firePan(az, c);
  }

  protected ImageIcon addImageIcon(ImageIcon imageIcon,
                                   String imageName,
                                   String imageTip) {
    URL url = NavigatePanel.class.getResource(imageName);
    imageIcon = new ImageIcon(url, imageTip);
    return imageIcon;
  }

The 'panf' amount ends up being the degrees you wish to pan. I
currently have it set to 0.5 and that seems to be a good amount
for what we want to do. There is some noticeable flicker if you
do this in rapid succession but I can live with that for the time
being.

Feel free to use this to your hearts content. Not sure if this is what
you intended or not but that's how I fixed it. ;) Feel free to ask me
any questions or if you want me to send you the source code.

Chris Hopkins
Software Engineer
Charles River Analytics

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