设计可组装的j2me UI（七） Choice

   艾，不想解释了。贴代码算了

java 代码

/********************************************************************
 *
 * 版权说明，此程序仅供学习参考。不能用于商业
 *
 ********************************************************************/
package org.pook.ui;

import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;

import org.pook.ui.core.Platform;



/**
 * <b>类名：ChoiceGroup.java</b> </br>
 * 编写日期: 2006-9-19 <br/>
 * 程序功能描述�? 本Class是一个多选择列表,因为项目的原�?,此列表是�?个固定形式的<br/>
 * 可以在Form上进行添加删�?,只不过表现形式固�?<br/>
 * Demo: <br/>
 * Bug: <br/>
 *
 * 程序变更日期 �?<br/>
 * 变更作�?? �?<br/>
 * 变更说明 �?<br/>
 *
 * @author wuhua </br> <a href="mailto:[e-mail]">[e-mail]</a>
 */
public class Choice extends Part {


    private boolean  select;

    /** 显示选择状�?? */
    private Image[] imageElements;



    public Choice(String label,
            Image[] imageElements, boolean  select) {
        super(0, 0, 0, 0);
        if(label == null)
            label = "";
        this.label = label;
        this.select = select;
        this.imageElements = imageElements;

    }


    public void paint(Graphics g) {
        paintChoiceImpl(g);

    }

    private void paintChoiceImpl(Graphics g) {

        paintChoice(g);

    }



    private void paintChoice(Graphics g) {
        g.drawImage(select?imageElements[0]:imageElements[1],view[X], view[Y],
                    Graphics.TOP|Graphics.LEFT);
        paintLabel(g);

    }
    private void paintLabel(Graphics g) {
        if(label.equals(""))
            return;
        g.setColor(fontColor);
        g.drawString(label,view[X] + imageElements[0].getWidth() + 4, view[Y]-2, Graphics.TOP | Graphics.LEFT);

        if(hasFocus)
            paintSelect(g);
    }



    /** 绘制选择�? **/
    private void paintSelect(Graphics g) {
        g.drawRect(view[X] - 1, view[Y]  - 1,
                   imageElements[0].getWidth()  + 1,
                  imageElements[0].getHeight() + 1);


    }


    public void onClick(int keyCode) {
        if(keyCode == Platform.KEY_ENTER
                && hasFocus)
            select = !select;

    }


    public boolean isSelect() {
        return select;
    }


    public void setSelect(boolean select) {
        this.select = select;
    }

}

评论

1 楼 linginfanta 2007-02-25  

代码不全