JoystickButtonsPanel.java

package org.myrobotlab.control.widget;

// ButtonsPanel.java
// Andrew Davison, October 2006, ad@fivedots.coe.psu.ac.th

/* A collection of Joystick.NUM_BUTTONS textfields 
 representing the buttons on the game pad, 
 divided into two rows

 When a button is pressed, the textfield's 
 background colour changes from OFF_COLOUR to ON_COLOUR
 */

import java.awt.Color;

import javax.swing.JPanel;

public class JoystickButtonsPanel extends JPanel {
  /**
   * 
   */
  private static final long serialVersionUID = 1L;
  // background colours for the textfields (game pad buttons)
  // below is not used?
  // private static final Color OFF_COLOUR = Color.LIGHT_GRAY;
  // private static final Color ON_COLOUR = Color.YELLOW;

  // not used
  // private JTextField buttonTFs[]; // represents the game pad buttons

  /**
   * Add the textfields to the panel and store references to them in a
   * buttonTFs[] array.
   * 
   * Each textfield contains a number, is uneditable, and starts with an
   * OFF_COLOUR background (meaning it's not pressed).
   */
  public JoystickButtonsPanel() {
    setBackground(Color.white);

    /*
     * // initialize buttonTFs[] buttonTFs = new
     * JTextField[Joystick.NUM_BUTTONS]; for (int i = 0; i <
     * Joystick.NUM_BUTTONS; i++) { buttonTFs[i] = new JTextField("" + (i), 2);
     * buttonTFs[i].setEditable(false); buttonTFs[i].setBackground(OFF_COLOUR);
     * }
     * 
     * setLayout(new BoxLayout(this, BoxLayout.Y_AXIS)); // vertical box layout
     * 
     * makeRow(0, Joystick.NUM_BUTTONS / 2); // 1st row
     * makeRow(Joystick.NUM_BUTTONS / 2, Joystick.NUM_BUTTONS); // 2nd row
     */
  } // end of ButtonsPanel()

  // not used method below
  // private void makeRow(int start, int end)
  // // a row of textfields from buttonTFs[start] to buttonTFs[end-1]
  // {
  // JPanel rowPanel = new JPanel();
  // rowPanel.setLayout(new BoxLayout(rowPanel, BoxLayout.X_AXIS)); // horiz
  // // box
  // // layout
  //
  // JPanel p;
  // for (int i = start; i < end; i++) {
  // p = new JPanel();
  // p.setBackground(Color.white);
  // p.add(buttonTFs[i]); // add button to its own panel p to stop
  // // resizing
  // rowPanel.add(p); // add panel p to row
  // }
  // add(rowPanel);
  // } // end of makeRow()

  public void setButton(int buttonNum, Float value) {
    /*
     * Color c = (value == Joystick.BUTTON_ON) ? ON_COLOUR : OFF_COLOUR;
     * buttonTFs[buttonNum].setBackground(c);
     *
     */
    repaint();
  }

  public void setButtons(boolean bVals[])
  /*
   * Use the bVals[] array to switch the buttonTFs on/off by changing the
   * background colour of their textfields.
   */
  {/*
    * if (bVals.length != Joystick.NUM_BUTTONS) System.out.println(
    * "Wring number of button values"); else { Color c; for (int i = 0; i <
    * Joystick.NUM_BUTTONS; i++) { c = (bVals[i] == true) ? ON_COLOUR :
    * OFF_COLOUR; buttonTFs[i].setBackground(c); } repaint(); }
    */
  } // end of setButtons()

} // end of ButtonsPanel class