fontpanel.java

用java编写的一个记事本程序,具有和windows Notepad相似的功能

import java.awt.*;
import java.awt.event.*;
import javax.swing.JTextArea;
import java.awt.datatransfer.*;
import java.io.*;
import java.awt.datatransfer.*;
import javax.swing.*;
import javax.swing.border.*;
class FontPanel extends Panel implements ItemListener 
{
	List list;
	Box baseBox,boxH1,boxH2,boxH3,boxH4,boxH5;	
	List fontList;
	List sizeList;
	TextField fontText;
	TextField sizeText;

	static JTextArea exampleText;
	static int size=20;
	int tempsize=20;
	static String name="character list";
	FontPanel()
	{

        setLayout(new BorderLayout());
		Color c=new Color(236,233,216);
		this.setBackground(c);
        Panel p1=new Panel();
        boxH1=Box.createHorizontalBox();
        Label charterLabel=new Label("字体");
        charterLabel.setAlignment(1);
        boxH1.add(charterLabel);
        boxH1.add(Box.createHorizontalStrut(1));
        

        
        Label sizeLabel=new Label("大小");
        sizeLabel.setAlignment(1);        
        boxH1.add(sizeLabel);        
     
        boxH2=Box.createHorizontalBox();
        fontText=new TextField(8);
        boxH2.add(fontText);
        
        boxH2.add(Box.createHorizontalStrut(1));
        sizeText=new TextField(8);       
        boxH2.add(sizeText);

        
       
         fontList=new List(6,false);    
        fontList.addItemListener(this);
        GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment();
        String fontName[]=ge.getAvailableFontFamilyNames();
        for(int i=0;i<fontName.length;i++)
        {
        	fontList.add(fontName[i]);
        }
        
         
        sizeList=new List(6,false);
        sizeList.addItemListener(this);
        for(int i=8;i<73;i++)
        {
        sizeList.add(String.valueOf(i));
        }
        Panel listpanel=new Panel();        
        GridLayout g2=new GridLayout(1,2);
        listpanel.setLayout(g2);
        listpanel.add(fontList);
        listpanel.add(sizeList);
        
        
        
        boxH4=Box.createHorizontalBox();
        Label exampleLabel=new Label("示例");
        exampleLabel.setAlignment(1);
        boxH4.add(exampleLabel);
        boxH4.add(Box.createHorizontalStrut(1));
        exampleText=new JTextArea(1,1);
       exampleText.append("Welcom to YONA studio!!");
        boxH4.add(exampleText);
        

     	
        GridLayout g1=new GridLayout(2,1);
        p1.setLayout(g1);
		p1.add(boxH1);
		p1.add(boxH2);

		
		GridLayout g3=new GridLayout(2,1);
		Panel p2=new Panel();
		p2.setLayout(g3);
		p2.add(boxH4);

		
		add(p1,BorderLayout.NORTH);
		add(listpanel,BorderLayout.CENTER);	    
	    add(p2,BorderLayout.SOUTH);

	    this.setVisible(true);
	    this.setBounds(280,250,300,150);
		this.validate();
		
	}	
public void itemStateChanged(ItemEvent e)
{
	

	if(e.getSource()==fontList)
	{
		name=fontList.getSelectedItem();
		Font f=new Font(name,Font.PLAIN,tempsize);
		exampleText.setFont(f);

		fontText.setText(name);

	}
	if(e.getSource()==sizeList)
	{
		
		size=Integer.parseInt(sizeList.getSelectedItem());
		tempsize=size;
		Font f=new Font(fontList.getSelectedItem(),Font.PLAIN,tempsize);
		exampleText.setFont(f);
		sizeText.setText(String.valueOf(size));
		
		

	}
}
		
}