How to keep a label at the left side of a JScrollPane

Question

Hi all
I am essentially trying to make a text block that doesn't move as the scrollpane scrolls (horizontally in my case)
Here's my code trying to do this simply using Graphics.drawString (not compilable - tell me if you need something that compiles):
          g.setFont(getTaskFont());
          g.setColor(getTaskLabelForeground());
          g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
          JScrollPane sp = ComponentUtilities.getJScrollPaneAncester(this);
          for (int i = 0; i < tasks.size() - 1; i++) {
               Task t = tasks.get(i + 1);
               FontMetrics fm = g.getFontMetrics();
               int y = i * (rowHeight + rowSpace) + fm.getAscent() + (rowHeight - fm.getHeight()) / 2;
               int strlen = fm.stringWidth(t.getName().toUpperCase());
               int start = getXLocationForTime(t.getStart());
               int end = getXLocationForTime(t.getFinish());
               int len = end - start;
               int x = 0;
               //System.out.println("task: " + t.getName());
               if (strlen < len) {
                    x = Math.min(end + 5, Math.max(start + 3, sp.getHorizontalScrollBar().getValue()));
               else {
                    x = end + 5;
               g.drawString(t.getName().toUpperCase(), x, y);
          }Here's my code trying to do this using a JLabel
               JScrollPane sp = ComponentUtilities.getJScrollPaneAncester(this);
               int y = i * (rowHeight + rowSpace); //+ fm.getAscent() + (rowHeight - fm.getHeight()) / 2;
               int strlen = fm.stringWidth(t.getName().toUpperCase());
               int start = getXLocationForTime(t.getStart());
               int end = getXLocationForTime(t.getFinish());
               int len = end - start;
               int x = 0;
               //System.out.println("task: " + t.getName());
               if (strlen < len) {
                    x = Math.min(end + 5, Math.max(start + 3, sp.getHorizontalScrollBar().getValue()));
               else {
                    x = end + 5;
               floaters.setLocation(x, y + (rowHeight - fm.getHeight()) / 4);
               floaters[i].repaint();
Both [i]almost work, but the scrolling is not smooth (blinks back & forth). It seemed like a double buffering problem, but when I added code to paint first to an image and then to screen the issue remained.
I also tried adding labels to the JLayeredPane popup layer, but I this solution is problematic also, as labels start drawing all over the place. Plus, I'd rather not have to keep track of the labels and be repositioning them in the first place.
Any advice on this is sincerely appreciated.
Thanks!
-Tom
Anyone know how to fix this?                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

Answer 1

Darryl Burke wrote:
a label at the left side of a JScrollPaneI take it <tt>setRowHeader</tt> / <tt>setRowHeaderView</tt> don't do what you want?
dbThat's a very helpful suggestion, and I think would solve the problem as stated, however in reading your answer I see now that I didn't state my problem well, and that what I am trying to do is much more complex than I originally thought it was.
Thanks tho, you have helped me gain clarity in what I am trying to do.