canvas.java

J2me唆哈的代码

/* 
 * Created on 2004-12-21 by Tianlei
 * version 1.0.0.3
 * since MIDP1.0
 * ģ��j2me�е�Canvas��
 * 
 */
package javax.microedition.lcdui;

import a.a.a.midp.lcdui.*;

/**
 * @author Tianlei
 * @version 1.0.0.3
 * @since MIDP1.0
 * 
 * ģ��j2me�е�Canvas��
 */
public abstract class Canvas extends Displayable {

    /**
     * ��Ϸ�������ϵļ�ֵ
     * @since MIDP1.0
     */
    public static final int UP = 1;
    /**
     * ��Ϸ�������µļ�ֵ
     * @since MIDP1.0
     */
    public static final int DOWN = 6;
    /**
     * ��Ϸ��������ļ�ֵ
     * @since MIDP1.0
     */
    public static final int LEFT = 2;
    /**
     * ��Ϸ�������µļ�ֵ
     * @since MIDP1.0
     */
    public static final int RIGHT = 5;
    /**
     * ��Ϸ����ȷ���ļ�ֵ
     * @since MIDP1.0
     */
    public static final int FIRE = 8;
    /**
     * ��Ϸ����A��(�����ֱ��A)�ļ�ֵ
     * @since MIDP1.0
     */
    public static final int GAME_A = 9;
    /**
     * ��Ϸ����B��(�����ֱ��B)�ļ�ֵ
     * @since MIDP1.0
     */
    public static final int GAME_B = 10;
    /**
     * ��Ϸ����C��(�����ֱ��C)�ļ�ֵ
     * @since MIDP1.0
     */
    public static final int GAME_C = 11;
    /**
     * ��Ϸ����D��(�����ֱ��D)�ļ�ֵ
     * @since MIDP1.0
     */
    public static final int GAME_D = 12;
    /**
     * �ֻ������0��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_NUM0 = 48;
    /**
     * �ֻ������1��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_NUM1 = 49;
    /**
     * �ֻ������2��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_NUM2 = 50;
    /**
     * �ֻ������3��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_NUM3 = 51;
    /**
     * �ֻ������4��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_NUM4 = 52;
    /**
     * �ֻ������5��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_NUM5 = 53;
    /**
     * �ֻ������6��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_NUM6 = 54;
    /**
     * �ֻ������7��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_NUM7 = 55;
    /**
     * �ֻ������8��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_NUM8 = 56;
    /**
     * �ֻ������9��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_NUM9 = 57;
    /**
     * �ֻ������*��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_STAR = 42;
    /**
     * �ֻ������#��ļ�ֵ
     * @since MIDP1.0
     */
    public static final int KEY_POUND = 35;

    /**
     * ���캯��
     * @since MIDP1.0
     */
    protected Canvas() {
        super();
        this.instance=new BQCanvas();
        instance.setShell(this);
    }

    /**
     * �ж��Ƿ�˫����
     * 
     * @return ģ������ʼ�շ���true
     * @since MIDP1.0
     */
    public boolean isDoubleBuffered() {
        return instance.isDoubleBuffered();
    }

    public int getWidth(){
        return super.getWidth();
    }
    
    public int getHeight(){
        return super.getHeight();
    }
    /**
     * �õ�ÿ���ֵ��Ӧ��GameAction �����û��������Ϸ��,Ĭ�Ϸ���0
     * 
     * @param keyCode ��ֵ
     * @return ���ڵ���Ϸ��ֵ,���û�ж���,�