How to use

RefineryUtilities

in

org.jfree.ui

public void showIt(boolean centered) {
 if(centered) {
   RefineryUtilities.centerFrameOnScreen(this);
 }
 showIt();
}

/**
 * Shows / updates the displayed graph.
 */
public void showMe() {
  boolean shown;
  synchronized(this) {
    shown = isShown;
    if (!isShown) {
      isShown = true;
    }
  }
  if(!shown) {
    this.pack();
    RefineryUtilities.centerFrameOnScreen(this);
    RefineryUtilities.positionFrameRandomly(this);
    RefineryUtilities.positionFrameOnScreen(this, 1, 0);
    this.setVisible(true);
  }
}

/**
 * Positions the specified dialog within its parent.
 *
 * @param dialog  the dialog to be positioned on the screen.
 */
public static void centerDialogInParent(final Dialog dialog) {
  positionDialogRelativeToParent(dialog, 0.5, 0.5);
}

/**
 * Positions the specified frame in the middle of the screen.
 *
 * @param frame  the frame to be centered on the screen.
 */
public static void centerFrameOnScreen(final Window frame) {
  positionFrameOnScreen(frame, 0.5, 0.5);
}

final JLabel appLabel = RefineryUtilities.createJLabel(application, f1, Color.black);
appLabel.setHorizontalTextPosition(SwingConstants.CENTER);
appPanel.add(appLabel);
final JLabel verLabel = RefineryUtilities.createJLabel(version, f2, Color.black);
verLabel.setHorizontalTextPosition(SwingConstants.CENTER);
verPanel.add(verLabel);
final JLabel copyrightLabel = RefineryUtilities.createJLabel(copyright, f2, Color.black);
copyrightLabel.setHorizontalTextPosition(SwingConstants.CENTER);
copyrightPanel.add(copyrightLabel);
final JLabel infoLabel = RefineryUtilities.createJLabel(info, f2, Color.black);
infoLabel.setHorizontalTextPosition(SwingConstants.CENTER);
infoPanel.add(infoLabel);

/**
 * Positions the specified frame at a relative position in the screen, where 50% is considered
 * to be the center of the screen.
 *
 * @param frame  the frame.
 * @param horizontalPercent  the relative horizontal position of the frame (0.0 to 1.0,
 *                           where 0.5 is the center of the screen).
 * @param verticalPercent  the relative vertical position of the frame (0.0 to 1.0, where
 *                         0.5 is the center of the screen).
 */
public static void positionFrameOnScreen(final Window frame,
                     final double horizontalPercent,
                     final double verticalPercent) {
  final Rectangle s = getMaximumWindowBounds();
  final Dimension f = frame.getSize();
  final int w = Math.max(s.width - f.width, 0);
  final int h = Math.max(s.height - f.height, 0);
  final int x = (int) (horizontalPercent * w) + s.x;
  final int y = (int) (verticalPercent * h) + s.y;
  frame.setBounds(x, y, f.width, f.height);
}

/**
 * Positions the specified frame in the middle of the screen.
 *
 * @param frame  the frame to be centered on the screen.
 */
public static void centerFrameOnScreen(final Window frame) {
  positionFrameOnScreen(frame, 0.5, 0.5);
}

final JLabel appLabel = RefineryUtilities.createJLabel(application, f1, Color.black);
appLabel.setHorizontalTextPosition(SwingConstants.CENTER);
appPanel.add(appLabel);
final JLabel verLabel = RefineryUtilities.createJLabel(version, f2, Color.black);
verLabel.setHorizontalTextPosition(SwingConstants.CENTER);
verPanel.add(verLabel);
final JLabel copyrightLabel = RefineryUtilities.createJLabel(copyright, f2, Color.black);
copyrightLabel.setHorizontalTextPosition(SwingConstants.CENTER);
copyrightPanel.add(copyrightLabel);
final JLabel infoLabel = RefineryUtilities.createJLabel(info, f2, Color.black);
infoLabel.setHorizontalTextPosition(SwingConstants.CENTER);
infoPanel.add(infoLabel);

/**
 * Positions the specified frame at a relative position in the screen, where 50% is considered
 * to be the center of the screen.
 *
 * @param frame  the frame.
 * @param horizontalPercent  the relative horizontal position of the frame (0.0 to 1.0,
 *                           where 0.5 is the center of the screen).
 * @param verticalPercent  the relative vertical position of the frame (0.0 to 1.0, where
 *                         0.5 is the center of the screen).
 */
public static void positionFrameOnScreen(final Window frame,
                     final double horizontalPercent,
                     final double verticalPercent) {
  final Rectangle s = getMaximumWindowBounds();
  final Dimension f = frame.getSize();
  final int w = Math.max(s.width - f.width, 0);
  final int h = Math.max(s.height - f.height, 0);
  final int x = (int) (horizontalPercent * w) + s.x;
  final int y = (int) (verticalPercent * h) + s.y;
  frame.setBounds(x, y, f.width, f.height);
}

public void showIt(boolean centered) {
 if(centered) {
   RefineryUtilities.centerFrameOnScreen(this);
 }
 showIt();
}

RefineryUtilities.centerFrameOnScreen(demo);
RefineryUtilities.positionFrameRandomly(demo);
RefineryUtilities.positionFrameOnScreen(demo, 1, 0);
if (visible) {
  demo.setVisible(true);

/**
 * Positions the specified frame in the middle of the screen.
 *
 * @param frame  the frame to be centered on the screen.
 */
public static void centerFrameOnScreen(final Window frame) {
  positionFrameOnScreen(frame, 0.5, 0.5);
}

/**
 * Positions the specified dialog within its parent.
 *
 * @param dialog  the dialog to be positioned on the screen.
 */
public static void centerDialogInParent(final Dialog dialog) {
  positionDialogRelativeToParent(dialog, 0.5, 0.5);
}

final JLabel appLabel = RefineryUtilities.createJLabel(application, f1, Color.black);
appLabel.setHorizontalTextPosition(SwingConstants.CENTER);
appPanel.add(appLabel);
final JLabel verLabel = RefineryUtilities.createJLabel(version, f2, Color.black);
verLabel.setHorizontalTextPosition(SwingConstants.CENTER);
verPanel.add(verLabel);
final JLabel copyrightLabel = RefineryUtilities.createJLabel(copyright, f2, Color.black);
copyrightLabel.setHorizontalTextPosition(SwingConstants.CENTER);
copyrightPanel.add(copyrightLabel);
final JLabel infoLabel = RefineryUtilities.createJLabel(info, f2, Color.black);
infoLabel.setHorizontalTextPosition(SwingConstants.CENTER);
infoPanel.add(infoLabel);

/**
 * Positions the specified dialog at a position relative to its parent.
 *
 * @param dialog  the dialog to be positioned.
 * @param horizontalPercent  the relative location.
 * @param verticalPercent  the relative location.
 */
public static void positionDialogRelativeToParent(final Dialog dialog,
                         final double horizontalPercent,
                         final double verticalPercent) {
  final Dimension d = dialog.getSize();
  final Container parent = dialog.getParent();
  final Dimension p = parent.getSize();
  final int baseX = parent.getX() - d.width;
  final int baseY = parent.getY() - d.height;
  final int w = d.width + p.width;
  final int h = d.height + p.height;
  int x = baseX + (int) (horizontalPercent * w);
  int y = baseY + (int) (verticalPercent * h);
  // make sure the dialog fits completely on the screen...
  final Rectangle s = getMaximumWindowBounds();
  x = Math.min(x, (s.width - d.width));
  x = Math.max(x, 0);
  y = Math.min(y, (s.height - d.height));
  y = Math.max(y, 0);
  dialog.setBounds(x + s.x, y + s.y, d.width, d.height);
}

  public static void main(String[] args) {
   List<Double> costTrends = Arrays.asList(1.0, 1.2, 1.3, 1.34, 1.23, 1.11, 1.5);
   CostTrend chart = new CostTrend(costTrends, "cost vs generation");

   RefineryUtilities.centerFrameOnScreen( chart );
   chart.showIt(true);
  }
}

/**
 * Positions the specified frame at a random location on the screen while ensuring that the
 * entire frame is visible (provided that the frame is smaller than the screen).
 *
 * @param frame  the frame.
 */
public static void positionFrameRandomly(final Window frame) {
  positionFrameOnScreen(frame, Math.random(), Math.random());
}

/**
 * Positions the specified dialog within its parent.
 *
 * @param dialog  the dialog to be positioned on the screen.
 */
public static void centerDialogInParent(final Dialog dialog) {
  positionDialogRelativeToParent(dialog, 0.5, 0.5);
}

/**
 * Positions the specified dialog at a position relative to its parent.
 *
 * @param dialog  the dialog to be positioned.
 * @param horizontalPercent  the relative location.
 * @param verticalPercent  the relative location.
 */
public static void positionDialogRelativeToParent(final Dialog dialog,
                         final double horizontalPercent,
                         final double verticalPercent) {
  final Dimension d = dialog.getSize();
  final Container parent = dialog.getParent();
  final Dimension p = parent.getSize();
  final int baseX = parent.getX() - d.width;
  final int baseY = parent.getY() - d.height;
  final int w = d.width + p.width;
  final int h = d.height + p.height;
  int x = baseX + (int) (horizontalPercent * w);
  int y = baseY + (int) (verticalPercent * h);
  // make sure the dialog fits completely on the screen...
  final Rectangle s = getMaximumWindowBounds();
  x = Math.min(x, (s.width - d.width));
  x = Math.max(x, 0);
  y = Math.min(y, (s.height - d.height));
  y = Math.max(y, 0);
  dialog.setBounds(x + s.x, y + s.y, d.width, d.height);
}

public void showWindow() {
  pack();        
  RefineryUtilities.centerFrameOnScreen(this);
  setVisible(true);
}