First, this is not homework...  I want to do a component that can be
like a progress bar or vu meter bar, that sort of thing, where the
colors make a smooth transition between given extremes.  So, let's say
the parameters were "Red" and "Green", and I guess scale and weighting
factors, I could get a set of colors that were "between" Red and Green
in a given color space.  I imagine the function could then accept
"Black" and "White" and render some sort of grayscale.

Thanks for any ideas or suggestions.

James

i did not say it WAS you listener , just that it might be, or it could be a
thread issue.

personally I would extract the tree code to its bare minimum, into a separate
class , that could be passed a init. construct.
Then test just that class on osx /linux, and if you find it not working post
the class here.

That said I have just been thru my source. ( after 1 year).

what i  can say is that i have the code  working  both on Linux & osx , daily
(i use osx .some of  my staff use linux suse 9.3 , others use windows SE)

ahhhhhh!
it appears i tried various mouse events, mouse pressed,entered
then settled on mouseclicked.

   public void mouseClicked(MouseEvent me) {
   // 19/06/2005 this was f.cked on linux the double click was not working
correctly!!
//corruption  of icons ,or partial expanansion
   
       int mouseCount = me.getClickCount(); //get the click count
       JTree at = albumView.getAlbumTree();

       //mycode      
       TreePath tp = at.getSelectionPath();

       if (tp != null) {
           DefaultMutableTreeNode obj = (DefaultMutableTreeNode)
tp.getLastPathComponent();

           //end of my code
           if (me.getSource() instanceof PhotoIcon) {
               PhotoIcon pi = (PhotoIcon) me.getSource();

               //System.out.println("double CLick: "+pi.getPhoto());
               if (
                   (//(mouseCount == constants.DOUBLE_CLICK) ||
                       (mouseCount == constants.SINGLE_CLICK)) &&
                       (build_rep == false)) {
                   showPhoto(pi.getPhoto(), mouseCount);

                   //  this.repaint();
               } else if (build_rep == true) {
                   addtoBuildWin(pi); //           stick it in the bottom
cos its a build rep.
               }
           } else {
               if (
                   (//(mouseCount == constants.DOUBLE_CLICK) ||
                           (mouseCount == constants.SINGLE_CLICK))&&
                       obj.getUserObject() instanceof Section &&
                       me.getSource() instanceof JTree) {
                   ////              System.out.println("Section: "+obj+"  
"+me.getSource());       
                   showSection((Section) obj.getUserObject());
               } else {
                   if (
                       (//(mouseCount == constants.DOUBLE_CLICK) ||
                           (mouseCount == constants.SINGLE_CLICK)) &&
                           obj.getUserObject() instanceof Photo &&
                           me.getSource() instanceof JTree) {
                       showPhoto((Photo) obj.getUserObject(), mouseCount);

                       //   this.repaint();
                   } else {
                       if (
                           (//(mouseCount == constants.DOUBLE_CLICK) ||
                           (mouseCount == constants.SINGLE_CLICK)) &&
                               obj.getUserObject() instanceof Report &&
                               me.getSource() instanceof JTree) {
                           editReport((Report) obj.getUserObject());
                           ;
                       }
                   }
               }
           }
       }
   }