fontlistcellrenderer.java

模仿腾讯QQ的

package com.softfz.jn0708.chat.sendpanel.fontpanel.fontcombobox;

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Font;

import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.ListCellRenderer;
import javax.swing.border.Border;

/**
 * 字体列表绘制器
 * @author admin
 *
 */

public class FontListCellRenderer extends JLabel implements ListCellRenderer {

	private Border lineBorder = BorderFactory.createLineBorder(Color.red,3);
	private Border emptyBorder = BorderFactory.createEmptyBorder(2,2,2,2); 

	/**
	 * 字体列表绘制器构造
	 *
	 */	
	public FontListCellRenderer(){
		setOpaque(true);
	}
	
	public Component getListCellRendererComponent(JList list, Object value,
			int index, boolean isSelected, boolean cellHasFocus) {
		// TODO 自动生成方法存根
		if(value != null){
			
			FontObject co =(FontObject)value;
			Font font = co.getFont();
			String text = co.getText();
			
			setText(text);
			setFont(font);
		}
		if (isSelected){
			setForeground(list.getSelectionForeground());
			setBackground(list.getSelectionBackground());
		}else{
			setForeground(list.getForeground());
			setBackground(list.getBackground());
		}
		setMaximumSize(new Dimension(80,25));
		setBorder(cellHasFocus ? lineBorder : emptyBorder);
		
		return this;
	}

}