Swapping Components with Fade Transition

Question

Hey,
There are many places in my application where I swap one component out for another one. I was trying to achieve a fade transition instead of just having the new component appear. I got it working, but it is very slow. Any ideas of how to get up the FPS?
Whenever I want to transition the content into the container, I create a new SwappableComponent with the two arguments.
Thanks!
private static class SwappableComponent extends JPanel {
          private static final float[] scales = { 1f, 1f, 1f, 0.5f };
          private static final float[] offsets = new float[4];
          private static final int TRANSITION_TIME = 1000;
          private final int w, h;
          private final JComponent container, content;
          private BufferedImage fromImage, toImage, currentImage;
          private long start = System.currentTimeMillis();
          private boolean finished = false;
          public SwappableComponent(JComponent container, JComponent content) {
               this.container = container;
               this.content = content;
               w = container.getWidth();
               h = container.getHeight();
               if (w == 0 || h == 0) {
                    finish();
               } else {
                    fromImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
                    Graphics g = fromImage.getGraphics();
                    container.printAll(g);
                    g.dispose();
                    toImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
                    g = toImage.getGraphics();
                    Components.setAllSizes(content, w, h);
                    container.removeAll();
                    container.add(content);
                    container.validate();
                    container.revalidate();
                    content.printAll(g);
                    g.dispose();
                    currentImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
                    this.setPreferredSize(new Dimension(w, h));
                    container.removeAll();
                    container.add(this);
                    container.revalidate();
                    updateCurrentImage(0.0f);
          @Override
          protected void paintComponent(Graphics g) {
               g.drawImage(currentImage, 0, 0, null);
          // return true if finished
          public boolean tick() {
               if (finished) {
                    return true;
               long time = System.currentTimeMillis();
               double percent = 1.0 * (time - start) / TRANSITION_TIME;
               if (percent >= 1) {
                    finish();
                    return true;
               updateCurrentImage((float) percent);
               repaint();
               return false;
          private void updateCurrentImage(float p) {
               Graphics2D g = (Graphics2D) currentImage.getGraphics();
               g.setColor(Color.white);
               g.fillRect(0, 0, w, h);
               scales[3] = 1 - p;
               RescaleOp rop = new RescaleOp(scales, offsets, null);
               g.drawImage(fromImage, rop, 0, 0);
               scales[3] = p;
               rop = new RescaleOp(scales, offsets, null);
               g.drawImage(toImage, rop, 0, 0);
               g.dispose();
          private void finish() {
               finished = true;
               SwingUtilities.invokeLater(new Runnable() {
                    public void run() {
                         container.removeAll();
                         container.add(content);
                         container.revalidate();
                         container.repaint();
     }

Answer 1

We can't see the behaviour you describe.
If you need further help then you need to create a [Short, Self Contained, Compilable and Executable, Example Program (SSCCE)|http://homepage1.nifty.com/algafield/sscce.html], that demonstrates the incorrect behaviour.