m3g03.midp2
Class CanvasKeyEvents

java.lang.Object
  javax.microedition.lcdui.Displayable
      javax.microedition.lcdui.Canvas
          m3g03.midp2.CanvasKeyEvents

public class CanvasKeyEvents
extends javax.microedition.lcdui.Canvas

Displays key events received from Canvas.keyPressed() with their code number, key name, and action mapping.

Author:

Claus Hoefele

Field Summary

private static java.util.Hashtable	GAME_ACTION_MAPPING Maps game actions to a name that can be displayed.
private int	keyCode Current key code.
private boolean	validKeyCode Flag whether a key code is available.

Fields inherited from class javax.microedition.lcdui.Canvas

DOWN, FIRE, GAME_A, GAME_B, GAME_C, GAME_D, KEY_NUM0, KEY_NUM1, KEY_NUM2, KEY_NUM3, KEY_NUM4, KEY_NUM5, KEY_NUM6, KEY_NUM7, KEY_NUM8, KEY_NUM9, KEY_POUND, KEY_STAR, LEFT, RIGHT, UP

Constructor Summary

CanvasKeyEvents()
Constructor.

Method Summary

protected void	keyPressed(int keyCode) Handles key presses.
protected void	paint(javax.microedition.lcdui.Graphics graphics) Displays key code information.

Methods inherited from class javax.microedition.lcdui.Canvas

getGameAction, getKeyCode, getKeyName, hasPointerEvents, hasPointerMotionEvents, hasRepeatEvents, hideNotify, isDoubleBuffered, keyReleased, keyRepeated, pointerDragged, pointerPressed, pointerReleased, repaint, repaint, serviceRepaints, setCommandListener, setFullScreenMode, showNotify, sizeChanged

Methods inherited from class javax.microedition.lcdui.Displayable

addCommand, getHeight, getTicker, getTitle, getWidth, isShown, removeCommand, setTicker, setTitle

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

keyCode

private int keyCode

Current key code.

validKeyCode

private boolean validKeyCode

Flag whether a key code is available.

GAME_ACTION_MAPPING

private static final java.util.Hashtable GAME_ACTION_MAPPING

Maps game actions to a name that can be displayed.

Constructor Detail

CanvasKeyEvents

public CanvasKeyEvents()

Constructor.

Method Detail

keyPressed

protected void keyPressed(int keyCode)

Handles key presses.

Overrides:

keyPressed in class javax.microedition.lcdui.Canvas

Parameters:

keyCode - key code.

paint

protected void paint(javax.microedition.lcdui.Graphics graphics)

Displays key code information.

Specified by:

paint in class javax.microedition.lcdui.Canvas

Parameters:

graphics - graphics context for rendering.