我这里有个我写的记事本程序你可以看看...不懂的在交流..我QQ718596512
/**
* 记事本程序
* 可以使用快捷键 *** 作(JMenu项是ALT+字母)
* 可以修改背景色,设置字体大小,种类
* 为JMenuItem添加快捷键JmenuItem jmi=new JmenuItem("打开",'O')
* 键盘加速即在不打开菜单的情况下自行打开相应菜单项的功能
* jmi1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,InputEvent.CTRL_MASK))
* 实现格式即字体窗格(JColorChooser,JSlider)
* 使用到
* JMenuBar JMenu JMenuItem JTextArea JScrollPane
* UIManager JFileChooser FileInputStream FileOutPutStream
* FileFilter(javax.swing.filechooser.FileFilter 另外是java.io中的一个接口)
* 实现d出菜单JPopupMenu使用鼠标适配器 类实现(MouseAdapter)
* 没有实现查找--虽然查找很简单但是要将它在jta中定位貌似不好搞
*/
package com.happy
import javax.swing.*
import javax.swing.border.TitledBorder
//注意这个包是必须的
import javax.swing.event.ChangeEvent
import javax.swing.event.ChangeListener
import javax.swing.filechooser.FileFilter
import java.awt.*
import java.awt.event.*
import java.io.*
import java.awt.event.MouseAdapter
public class NotePadWin extends JFrame implements ActionListener{
/**
*
*/
private static final long serialVersionUID = 1L
/**
* @param args
*/
//数据成员
JMenuBar jmb=null
JMenu jm1=null//文件
JMenu jm2=null//编辑
JMenu jm3=null//格式
JMenu jm4=null//帮助
JPopupMenu jpm=null
JMenuItem jmi1=null
JMenuItem jmi2=null
JMenuItem jmi3=null
JMenuItem jmi33=null
JMenuItem jmi4=null
JMenuItem jmi44=null
JMenuItem jmi5=null
JMenuItem jmi6=null
JMenuItem jmi7=null
JMenuItem jmi8=null
JMenuItem jmi9=null
JMenuItem jmi99=null
JMenuItem jmi10=null
static JTextArea jta=null
JScrollPane jsp=null
JFileChooser jfc=null
//记录当前文本内容
StringBuffer con=null
FontWin fw=null
public NotePadWin(){
//实例化
jmb=new JMenuBar()
jm1=new JMenu("文件(F)")
jm2=new JMenu("编辑(Z)")
jm3=new JMenu("格式(G)")
jm4=new JMenu("帮助(H)")
//添加快捷键
jm1.setMnemonic('F')
jm2.setMnemonic('Z')
jm3.setMnemonic('G')
jm4.setMnemonic('H')
//这样的快捷键必须打开菜单才有效
jmi1=new JMenuItem("新建(N)",'N')
jmi2=new JMenuItem("打开(O)",'O')
jmi3=new JMenuItem("保存(S)",'S')
jmi33=new JMenuItem("保存(S)")
jmi4=new JMenuItem("退出(E)",'E')
jmi44=new JMenuItem("退出(E)")
//设置键盘加速
jmi1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,InputEvent.CTRL_MASK))
jmi2.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O,InputEvent.CTRL_MASK))
jmi3.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_MASK))
jmi4.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_E,InputEvent.CTRL_MASK))
jm1.add(jmi1)
jm1.add(jmi2)
jm1.add(jmi3)
// 添加分隔线
jm1.addSeparator()
jm1.add(jmi4)
jmi5=new JMenuItem("查找")
jmi6=new JMenuItem("全选")
jm2.add(jmi5)
jm2.add(jmi6)
jmi7=new JMenuItem("帮助主题")
jmi7.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_H,InputEvent.CTRL_MASK))
jmi8=new JMenuItem("关于")
jm4.add(jmi7)
jm4.add(jmi8)
jmi9=new JMenuItem("字体")
jmi99=new JMenuItem("字体")
jm3.add(jmi9)
jmb.add(jm1)
jmb.add(jm2)
jmb.add(jm3)
jmb.add(jm4)
jpm=new JPopupMenu()
jpm.add(jmi33)
jpm.add(jmi99)
jpm.add(jmi44)
jta=new JTextArea()
jta.setBorder(new TitledBorder("文本域"))
//添加鼠标适配器
jta.addMouseListener(new MouseAdapter(){
public void mouseReleased(MouseEvent e){
if(e.getButton()==MouseEvent.BUTTON3){
System.out.println("ff")
jpm.show(e.getComponent(), e.getX(), e.getY())
}
}
})
jsp=new JScrollPane(jta,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED)
jfc=new JFileChooser()
//添加文件过滤器
jfc.addChoosableFileFilter(new MyFileFilter("java"))
jfc.addChoosableFileFilter(new MyFileFilter("txt"))
jfc.addChoosableFileFilter(new MyFileFilter("c"))
jfc.addChoosableFileFilter(new MyFileFilter("cpp"))
jfc.addChoosableFileFilter(new MyFileFilter("lrc"))
jfc.addChoosableFileFilter(new MyFileFilter("h"))
//注册监听器
jmi1.addActionListener(this)
jmi2.addActionListener(this)
jmi3.addActionListener(this)
jmi33.addActionListener(this)
jmi4.addActionListener(this)
jmi44.addActionListener(this)
jmi5.addActionListener(this)
jmi6.addActionListener(this)
jmi7.addActionListener(this)
jmi8.addActionListener(this)
jmi9.addActionListener(this)
jmi99.addActionListener(this)
//添加菜单栏和文本域
this.setJMenuBar(jmb)
this.add(jsp)
}
//主函数
public static void main(String[] args) {
// TODO Auto-generated method stub
//设置当前程序的UI
try {
UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName())
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace()
} catch (InstantiationException e) {
// TODO Auto-generated catch block
e.printStackTrace()
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace()
} catch (UnsupportedLookAndFeelException e) {
// TODO Auto-generated catch block
e.printStackTrace()
}
NotePadWin notepad=new NotePadWin()
notepad.setSize(400,300)
notepad.setTitle("我的记事本")
notepad.setVisible(true)
notepad.setDefaultCloseOperation(EXIT_ON_CLOSE)
}
//事件处理函数
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
JMenuItem t=(JMenuItem)e.getSource()
//处理新建
if(t==jmi1){
newFile()
}
//打开
if(t==jmi2){
openFile()
}
//保存文件
if(t==jmi3||t==jmi33){
saveFile()
}
//退出
if(t==jmi4||t==jmi44){
myExit()
}
//帮助
if(t==jmi7){
JOptionPane.showMessageDialog(null, "这个记事本可以打开基本的文本文件\n"
+"包括*.java,*.class,*.cpp,*.h,*.lrc,*.txt\n"
+"为了避免与系统热键冲突对于全选.复制.粘贴等没有实现")
}
//关于
if(t==jmi8){
JOptionPane.showMessageDialog(null, "一个简单的记事本\n"
+"仅供学习研究之用\n"+"作者:高兴亮 \n"+"2010-11-30")
}
//字体
if(t==jmi9||t==jmi99){
fontSet()
}
}
public void saveFile(){
File file=null
int flag=jfc.showSaveDialog(this)
jfc.setApproveButtonText("保存")
jfc.setDialogTitle("保存文件.....")
FileOutputStream fos=null
if(flag==JFileChooser.APPROVE_OPTION){
file=jfc.getSelectedFile()
try {
fos=new FileOutputStream(file)
try {
fos.write(jta.getText().getBytes())
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace()
}
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace()
}finally{
if(fos!=null){
try {
fos.close()
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace()
}
}
}
}
}
public void openFile(){
String str=null
File file=null
jfc.setApproveButtonText("确定")
jfc.setDialogTitle("打开文件....")
FileInputStream fis=null
//打开窗口.返回值
int flag=jfc.showOpenDialog(this)
//打开文件
if(flag==JFileChooser.APPROVE_OPTION){
file=jfc.getSelectedFile()
String name=file.getName().substring(file.getName().lastIndexOf('.')+1).toLowerCase()
//约束打开文件类型
if(name.equals("java")||name.equals("txt")||name.equals("h")
||name.equals("lrc")||name.equals("cpp")||name.equals("class")){
//得到文件内容
try {
fis=new FileInputStream(file)
byte buf[]=new byte[1024]
int n=0
try {
while((n=fis.read(buf))!=-1){
str+=new String(buf,0,n)
}
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace()
}
jta.setText(str)
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace()
}finally{
if(fis!=null){
try {
fis.close()
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace()
}
}
}
}
}else{
//test
System.out.println("未打开文件")
}
}
public void fontSet(){
fw=new FontWin()
}
public void myExit(){
//文本域有内容
if(jta.getText().length()!=0){
int ii=JOptionPane.showConfirmDialog(null, "是否保存文件")
//用户选择是
if(ii==0){
saveFile()
System.exit(0)
}else if(ii==1){
System.exit(0)
}else{
System.exit(0)
}
}else{
System.exit(0)
}
}
public void newFile(){
//文本域有内容
if(jta.getText().length()!=0){
int ii=JOptionPane.showConfirmDialog(null, "是否保存文件")
//用户选择是
if(ii==0){
saveFile()
}else if(ii==1){
jta.setText("")
}else{
System.out.println("error")
}
}
}
}
//我的文件过滤器实现对打开文件的限制
class MyFileFilter extends FileFilter{
//文件后缀
String str
public MyFileFilter(String str) {
super()
this.str = str
}
//当目录里面的文件与要求的相同时返回true,并将该文件显示在文件对话框中
@Override
public boolean accept(File file) {
// TODO Auto-generated method stub
//如果文件是目录
if(file.isDirectory()){
return true
}
String fileName=file.getName()
if(fileName.substring(fileName.lastIndexOf('.')+1).equalsIgnoreCase(str)){
return true
}
return false
}
//返回描述文件对应的描述
public String getDescription(){
String des=new String()
if(str.equalsIgnoreCase("java")){
des="java file"
}else if(str.equalsIgnoreCase("class")){
des="java class file"
}else if(str.equalsIgnoreCase("txt")){
des="text file"
}else if(str.equalsIgnoreCase("cpp")){
des="c++ file"
}else if(str.equalsIgnoreCase("h")){
des="c/c++ header file"
}else if(str.equalsIgnoreCase("lrc")){
des="lrc file"
}else
des=""
return des
}
}
//字体控制窗口
class FontWin extends JFrame implements ActionListener,ChangeListener{
//字体种类
JComboBox jcb=null
//颜色(文本域的颜色)
JColorChooser jcc=null
//字体大小
JSlider js=null
//示例
JTextArea jta=null
JScrollPane jsp=null
//控制按钮
JButton jbt1=null
JButton jbt2=null
JButton jbt3=null
String[] fonts=null
//定义此次 *** 作是否有效
Font curFont=null
Color color=new Color(0)
public FontWin(){
//初始化字体种类
GraphicsEnvironment e=GraphicsEnvironment.getLocalGraphicsEnvironment()
fonts=e.getAvailableFontFamilyNames()
jcb=new JComboBox(fonts)
jcb.addActionListener(this)
//初始化Jcc
//jcc=new JColorChooser(Color.white)
//color=jcc.showDialog(jf, "颜色选择器", Color.white)
jbt1=new JButton("确定")
jbt2=new JButton("取消")
jbt3=new JButton("颜色选择器")
jbt1.addActionListener(this)
jbt2.addActionListener(this)
jbt3.addActionListener(this)
jta=new JTextArea(30,30)
jta.setText("我的记事本\n"+"my notepad")
jta.setEditable(true)
jta.setBorder(new TitledBorder("示例"))
jsp=new JScrollPane(jta,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED)
//字体大小在10-50
js=new JSlider(10,50)
js.setMajorTickSpacing(10)
js.setMinorTickSpacing(1)
js.setPaintTicks(true)
js.setPaintLabels(true)
//滑到整数附近
js.setSnapToTicks(true)
js.addChangeListener(this)
JPanel jpa1=new JPanel()
jpa1.add(jcb)
jpa1.add(js)
JPanel jpa2=new JPanel()
jpa2.add(jbt3)
jpa2.add(jbt1)
jpa2.add(jbt2)
JPanel jpa3=new JPanel()
jpa3.add(jsp,BorderLayout.CENTER)
this.add(jpa1,BorderLayout.NORTH)
this.add(jpa3,BorderLayout.CENTER)
this.add(jpa2,BorderLayout.SOUTH)
this.setSize(400, 200)
this.setLocation(200, 200)
this.setVisible(true)
this.setResizable(false)
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE)
this.setTitle("字体选择器")
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource()==jcb){
String curFontName=(String)jcb.getSelectedItem()
int curFontSize=js.getValue()
Font f=new Font(curFontName,Font.PLAIN,curFontSize)
jta.setFont(f)
}
//颜色选择器
if(e.getSource()==jbt3){
jcc=new JColorChooser(Color.white)
color=JColorChooser.showDialog(this, "颜色选择器", Color.white)
jta.setBackground(color)
}
if(e.getSource()==jbt1){
String curFontName=(String)jcb.getSelectedItem()
int curFontSize=js.getValue()
curFont=new Font(curFontName,Font.PLAIN,curFontSize)
//color=color
NotePadWin.jta.setFont(curFont)
NotePadWin.jta.setBackground(color)
this.dispose()
}
if(e.getSource()==jbt2){
this.dispose()
}
}
//js
@Override
public void stateChanged(ChangeEvent e) {
// TODO Auto-generated method stub
if(e.getSource()==js){
String curFontName=(String)jcb.getSelectedItem()
int curFontSize=js.getValue()
Font f=new Font(curFontName,Font.PLAIN,curFontSize)
jta.setFont(f)
}
}
public Font getCurFont() {
return curFont
}
public Color getColor() {
return color
}
}
楼主写一个html，很容易把下面代码嵌入到applet，可以google一下实现，还有copy自己不知道算不算复制。。。-_-!
--------------------------------------------------------------------
楼主给你一个我的，直接保存成pb.java编译运行，就是你要的画图功能 ，可以参考一下
____________________________________________________________________
import java.applet.*
import java.awt.*
import java.awt.event.*
import java.util.*
import javax.swing.*
import java.awt.geom.*
import java.io.*
class Point implements Serializable
{
int x,y
Color col
int tool
int boarder
Point(int x, int y, Color col, int tool, int boarder)
{
this.x = x
this.y = y
this.col = col
this.tool = tool
this.boarder = boarder
}
}
class paintboard extends Frame implements ActionListener,MouseMotionListener,MouseListener,ItemListener
{
int x = -1, y = -1
int con = 1//画笔大小
int Econ = 5//橡皮大小
int toolFlag = 0//toolFlag:工具标记
//toolFlag工具对应表：
//（0--画笔）；（1--橡皮）；（2--清除）；
//（3--直线）；（4--圆）；（5--矩形）；
Color c = new Color(0,0,0)//画笔颜色
BasicStroke size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL)//画笔粗细
Point cutflag = new Point(-1, -1, c, 6, con)//截断标志
Vector paintInfo = null//点信息向量组
int n = 1
FileInputStream picIn = null
FileOutputStream picOut = null
ObjectInputStream VIn = null
ObjectOutputStream VOut = null
// *工具面板--画笔，直线，圆，矩形，多边形,橡皮，清除*/
Panel toolPanel
Button eraser, drLine,drCircle,drRect
Button clear ,pen
Choice ColChoice,SizeChoice,EraserChoice
Button colchooser
Label 颜色,大小B,大小E
//保存功能
Button openPic,savePic
FileDialog openPicture,savePicture
paintboard(String s)
{
super(s)
addMouseMotionListener(this)
addMouseListener(this)
paintInfo = new Vector()
/*各工具按钮及选择项*/
//颜色选择
ColChoice = new Choice()
ColChoice.add("black")
ColChoice.add("red")
ColChoice.add("blue")
ColChoice.add("green")
ColChoice.addItemListener(this)
//画笔大小选择
SizeChoice = new Choice()
SizeChoice.add("1")
SizeChoice.add("3")
SizeChoice.add("5")
SizeChoice.add("7")
SizeChoice.add("9")
SizeChoice.addItemListener(this)
//橡皮大小选择
EraserChoice = new Choice()
EraserChoice.add("5")
EraserChoice.add("9")
EraserChoice.add("13")
EraserChoice.add("17")
EraserChoice.addItemListener(this)
////////////////////////////////////////////////////
toolPanel = new Panel()
clear = new Button("清除")
eraser = new Button("橡皮")
pen = new Button("画笔")
drLine = new Button("画直线")
drCircle = new Button("画圆形")
drRect = new Button("画矩形")
openPic = new Button("打开图画")
savePic = new Button("保存图画")
colchooser = new Button("显示调色板")
//各组件事件监听
clear.addActionListener(this)
eraser.addActionListener(this)
pen.addActionListener(this)
drLine.addActionListener(this)
drCircle.addActionListener(this)
drRect.addActionListener(this)
openPic.addActionListener(this)
savePic.addActionListener(this)
colchooser.addActionListener(this)
颜色 = new Label("画笔颜色",Label.CENTER)
大小B = new Label("画笔大小",Label.CENTER)
大小E = new Label("橡皮大小",Label.CENTER)
//面板添加组件
toolPanel.add(openPic)
toolPanel.add(savePic)
toolPanel.add(pen)
toolPanel.add(drLine)
toolPanel.add(drCircle)
toolPanel.add(drRect)
toolPanel.add(颜色)toolPanel.add(ColChoice)
toolPanel.add(大小B)toolPanel.add(SizeChoice)
toolPanel.add(colchooser)
toolPanel.add(eraser)
toolPanel.add(大小E)toolPanel.add(EraserChoice)
toolPanel.add(clear)
//工具面板到APPLET面板
add(toolPanel,BorderLayout.NORTH)
setBounds(60,60,900,600)setVisible(true)
validate()
//dialog for save and load
openPicture = new FileDialog(this,"打开图画",FileDialog.LOAD)
openPicture.setVisible(false)
savePicture = new FileDialog(this,"保存图画",FileDialog.SAVE)
savePicture.setVisible(false)
openPicture.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{ openPicture.setVisible(false)}
})
savePicture.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{ savePicture.setVisible(false)}
})
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{ System.exit(0)}
})
}
public void paint(Graphics g)
{
Graphics2D g2d = (Graphics2D)g
Point p1,p2
n = paintInfo.size()
if(toolFlag==2)
g.clearRect(0,0,getSize().width,getSize().height)//清除
for(int i=0i<n i++){
p1 = (Point)paintInfo.elementAt(i)
p2 = (Point)paintInfo.elementAt(i+1)
size = new BasicStroke(p1.boarder,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL)
g2d.setColor(p1.col)
g2d.setStroke(size)
if(p1.tool==p2.tool)
{
switch(p1.tool)
{
case 0://画笔
Line2D line1 = new Line2D.Double(p1.x, p1.y, p2.x, p2.y)
g2d.draw(line1)
break
case 1://橡皮
g.clearRect(p1.x, p1.y, p1.boarder, p1.boarder)
break
case 3://画直线
Line2D line2 = new Line2D.Double(p1.x, p1.y, p2.x, p2.y)
g2d.draw(line2)
break
case 4://画圆
Ellipse2D ellipse = new Ellipse2D.Double(p1.x, p1.y, Math.abs(p2.x-p1.x) , Math.abs(p2.y-p1.y))
g2d.draw(ellipse)
break
case 5://画矩形
Rectangle2D rect = new Rectangle2D.Double(p1.x, p1.y, Math.abs(p2.x-p1.x) , Math.abs(p2.y-p1.y))
g2d.draw(rect)
break
case 6://截断，跳过
i=i+1
break
default :
}//end switch
}//end if
}//end for
}
public void itemStateChanged(ItemEvent e)
{
if(e.getSource()==ColChoice)//预选颜色
{
String name = ColChoice.getSelectedItem()
if(name=="black")
{c = new Color(0,0,0)}
else if(name=="red")
{c = new Color(255,0,0)}
else if(name=="green")
{c = new Color(0,255,0)}
else if(name=="blue")
{c = new Color(0,0,255)}
}
else if(e.getSource()==SizeChoice)//画笔大小
{
String selected = SizeChoice.getSelectedItem()
if(selected=="1")
{
con = 1
size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL)
}
else if(selected=="3")
{
con = 3
size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL)
}
else if(selected=="5")
{con = 5
size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL)
}
else if(selected=="7")
{con = 7
size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL)
}
else if(selected=="9")
{con = 9
size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL)
}
}
else if(e.getSource()==EraserChoice)//橡皮大小
{
String Esize = EraserChoice.getSelectedItem()
if(Esize=="5")
{ Econ = 5*2}
else if(Esize=="9")
{ Econ = 9*2}
else if(Esize=="13")
{ Econ = 13*2}
else if(Esize=="17")
{ Econ = 17*3}
}
}
public void mouseDragged(MouseEvent e)
{
Point p1
switch(toolFlag){
case 0://画笔
x = (int)e.getX()
y = (int)e.getY()
p1 = new Point(x, y, c, toolFlag, con)
paintInfo.addElement(p1)
repaint()
break
case 1://橡皮
x = (int)e.getX()
y = (int)e.getY()
p1 = new Point(x, y, null, toolFlag, Econ)
paintInfo.addElement(p1)
repaint()
break
default :
}
}
public void mouseMoved(MouseEvent e) {}
public void update(Graphics g)
{
paint(g)
}
public void mousePressed(MouseEvent e)
{
Point p2
switch(toolFlag){
case 3://直线
x = (int)e.getX()
y = (int)e.getY()
p2 = new Point(x, y, c, toolFlag, con)
paintInfo.addElement(p2)
break
case 4: //圆
x = (int)e.getX()
y = (int)e.getY()
p2 = new Point(x, y, c, toolFlag, con)
paintInfo.addElement(p2)
break
case 5: //矩形
x = (int)e.getX()
y = (int)e.getY()
p2 = new Point(x, y, c, toolFlag, con)
paintInfo.addElement(p2)
break
default :
}
}
public void mouseReleased(MouseEvent e)
{
Point p3
switch(toolFlag){
case 0://画笔
paintInfo.addElement(cutflag)
break
case 1: //eraser
paintInfo.addElement(cutflag)
break
case 3://直线
x = (int)e.getX()
y = (int)e.getY()
p3 = new Point(x, y, c, toolFlag, con)
paintInfo.addElement(p3)
paintInfo.addElement(cutflag)
repaint()
break
case 4: //圆
x = (int)e.getX()
y = (int)e.getY()
p3 = new Point(x, y, c, toolFlag, con)
paintInfo.addElement(p3)
paintInfo.addElement(cutflag)
repaint()
break
case 5: //矩形
x = (int)e.getX()
y = (int)e.getY()
p3 = new Point(x, y, c, toolFlag, con)
paintInfo.addElement(p3)
paintInfo.addElement(cutflag)
repaint()
break
default:
}
}
public void mouseEntered(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseClicked(MouseEvent e){}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==pen)//画笔
{toolFlag = 0}
if(e.getSource()==eraser)//橡皮
{toolFlag = 1}
if(e.getSource()==clear)//清除
{
toolFlag = 2
paintInfo.removeAllElements()
repaint()
}
if(e.getSource()==drLine)//画线
{toolFlag = 3}
if(e.getSource()==drCircle)//画圆
{toolFlag = 4}
if(e.getSource()==drRect)//画矩形
{toolFlag = 5}
if(e.getSource()==colchooser)//调色板
{
Color newColor = JColorChooser.showDialog(this,"调色板",c)
c = newColor
}
if(e.getSource()==openPic)//打开图画
{
openPicture.setVisible(true)
if(openPicture.getFile()!=null)
{
int tempflag
tempflag = toolFlag
toolFlag = 2
repaint()
try{
paintInfo.removeAllElements()
File filein = new File(openPicture.getDirectory(),openPicture.getFile())
picIn = new FileInputStream(filein)
VIn = new ObjectInputStream(picIn)
paintInfo = (Vector)VIn.readObject()
VIn.close()
repaint()
toolFlag = tempflag
}
catch(ClassNotFoundException IOe2)
{
repaint()
toolFlag = tempflag
System.out.println("can not read object")
}
catch(IOException IOe)
{
repaint()
toolFlag = tempflag
System.out.println("can not read file")
}
}
}
if(e.getSource()==savePic)//保存图画
{
savePicture.setVisible(true)
try{
File fileout = new File(savePicture.getDirectory(),savePicture.getFile())
picOut = new FileOutputStream(fileout)
VOut = new ObjectOutputStream(picOut)
VOut.writeObject(paintInfo)
VOut.close()
}
catch(IOException IOe)
{
System.out.println("can not write object")
}
}
}
}//end paintboard
public class pb
{
public static void main(String args[])
{ new paintboard("画图程序")}
}
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