choice.java

手机电子书阅读软件基本框架

/********************************************************************
 * 
 * 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;
	}

}