/** Based on section 12.6 in book - using a slider.
 */
import java.awt.*;
import javax.swing.*;

public class Driver
{
  public static void main(String [] args)
  {
    JFrame frame = new JFrame("Color");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel colorPanel = new JPanel();
    colorPanel.setPreferredSize(new Dimension(100,100));
    colorPanel.setBackground(new Color(128,128,255));

    // Our frame will contain 2 panels -- input in the
    // form of sliders, and output in the form of a 100x100
    // "colorPanel" displaying the color in its background.

    // Note that we have seen several ways to put multiple
    // panels in a frame.  Panels must go in some "container"
    // object.  This container may be, for example:
    // 1.  an outer level panel
    // 2.  a scroll pane or split pane
    // 3.  the default pane belonging to the frame, which we
    //     obtain by calling getContentPane().
    // We are required to use the frame's getContentPane()
    // to insert the top-level panel into the frame, but
    // it's up to us how to organize subpanels.

    Container pane = frame.getContentPane();
    pane.setLayout(new FlowLayout());
    pane.add(new SliderPanel(colorPanel));
    pane.add(colorPanel);

    frame.pack();
    frame.show();
  }
}