这样满足你的要求么
import?java.awt.Dimension;
import?java.awt.Graphics;
import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;
import?javax.swing.JButton;
import?javax.swing.JFrame;
import?javax.swing.JPanel;
public?class?Painter?extends?JFrame{
/**
*?
*/
CanvasPanel?canvas?=?new?CanvasPanel();;
public?Painter()?{
super("Star");
this.add(canvas);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.pack();
this.setResizable(false);
this.setLocationRelativeTo(null);
this.setVisible(true);
}
public?static?void?main(String[]?args)?{
new?Painter();
class?CanvasPanel?extends?JPanel?implements?ActionListener{
private?String[]?btn_name?=?{"+",?"-",?"R",?"L"};
public?CanvasPanel()?{
this.setLayout(null);
btn[i]?=?new?JButton(btn_name[i]);
btn[i].addActionListener(this);
this.add(btn[i]);
@Override
public?void?paintComponent(Graphics?g)?{
super.paintComponent(g);
public?void?actionPerformed(ActionEvent?e)?{
//?TODO?Auto-generated?method?stub
if(e.getActionCommand()?==?"+")?{
repaint();
}?else?if(e.getActionCommand()?==?"-")?{
if(radius?0)
}?else?if(e.getActionCommand()?==?"R")?{
}?else?if(e.getActionCommand()?==?"L")?{
只有矩形有圆形能移动,其它实现起来麻烦点,办法有的只是代码太多.
画圆弧改成了画曲线,圆弧稍麻烦,当然方法是很简单的,你可以自己思考一下.
有保存与打开功能.扩展名请用 .jdr
基本满足条件,细节可能不是很好,另,代码比较乱,怕不好看懂咯,呼呼.
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.ArrayList;
import javax.swing.*;
import javax.swing.filechooser.FileNameExtensionFilter;
public class JDraw {
public static void main(String[] args) {
JFrame f=new JFrame();
f.setLocationRelativeTo(null);
f.getContentPane().add(M.c);
f.getContentPane().add(M.m,"South");
f.setVisible(true);
class CVS extends Component implements ComponentListener,MouseListener,MouseMotionListener{
public void componentHidden(ComponentEvent e) {}
public void componentMoved(ComponentEvent e) {}
public void componentResized(ComponentEvent e) {resized();}
public void componentShown(ComponentEvent e) {}
private void resized() {
int w=this.getWidth();
int h=this.getHeight();
makeBuff(w,h);
private void makeBuff(int w,int h) {
Graphics g = tbuff.getGraphics();
g.drawImage(buff,0,0,null);
g.dispose();
g=buff.getGraphics();
g.drawImage(tbuff,0,0,null);
BufferedImage buff,tbuff;
CVS(){
this.addComponentListener(this);
this.addMouseListener(this);
this.addMouseMotionListener(this);
public void paint(Graphics gr){
g.setBackground(new Color(0xff000000,true));
g.clearRect(0,0,getWidth(),getHeight());
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
M.sa.drawAll(g);
if(M.ts!=null)
M.ts.draw(g);
gr.drawImage(buff,0,0,this);
gr.dispose();
public void mouseClicked(MouseEvent e) {}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mousePressed(MouseEvent e) {
M.mp(e.getPoint());
public void mouseReleased(MouseEvent e) {
M.mr(e.getPoint());
public void mouseDragged(MouseEvent e) {
M.md(e.getPoint());
public void mouseMoved(MouseEvent e) {}
class Menu extends JComponent implements MouseListener,ActionListener{
JComboBox sbox,method;
CLabel[] cl;
JCheckBox fillC,drawB;
JRadioButton fc,bc;
ButtonGroup bg;
JButton clear,up,down,save,load;
Menu(){
this.setLayout(new FlowLayout());
method=new JComboBox(new Object[]{"draw","move","erase",});
add(method);
sbox=new JComboBox(new Object[]{"Pt","Ln","Rect","Cir","Arc",});
add(sbox);
for(int i=0; icl.length; i++){
cl[i]=new CLabel();
cl[i].addMouseListener(this);
add(cl[i]);
fc=new JRadioButton("fc",true);
bc=new JRadioButton("bc");
bg=new ButtonGroup();
bg.add(fc);bg.add(bc);
add(fc);add(bc);
fc.setOpaque(true);
bc.setOpaque(true);
fc.setBackground(Color.white);
bc.setBackground(Color.blue);
fillC=new JCheckBox("Fill",true);
drawB=new JCheckBox("Draw",true);
fillC.addActionListener(this);
drawB.addActionListener(this);
add(fillC);add(drawB);
clear=new JButton("clear");
clear.addActionListener(this);
add(clear);
up=new JButton("zUp");
up.addActionListener(this);
add(up);
down=new JButton("zDown");
down.addActionListener(this);
add(down);
save=new JButton("Save");
save.addActionListener(this);
add(save);
load=new JButton("Load");
load.addActionListener(this);
add(load);
public void mouseClicked(MouseEvent e) {
JLabel l=(JLabel)e.getSource();
Color sc=JColorChooser.showDialog(null, "Color chooser", l.getBackground());
l.setBackground(sc);
mousePressed(e);
Color c=((JLabel)e.getSource()).getBackground();
if(fc.isSelected())
fc.setBackground(c);
else if(bc.isSelected())
bc.setBackground(c);
M.cp();
public void mouseReleased(MouseEvent e) {}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==clear)M.clear();
else if(e.getSource()==up)M.up();
else if(e.getSource()==down)M.down();
else if(e.getSource()==save)M.save();
else if(e.getSource()==load)M.load();
else if(e.getSource()==fillC||e.getSource()==drawB)M.cp();
class CLabel extends JLabel{
static Color[] cs={Color.red,Color.orange,Color.yellow,Color.green,Color.cyan,
Color.blue,Color.magenta,Color.magenta.brighter(),
Color.white,Color.black,Color.gray,Color.LIGHT_GRAY,Color.DARK_GRAY,};
static int i;
CLabel(){
this.setOpaque(true);
this.setBackground(cs[i++]);
this.setBorder(BorderFactory.createLineBorder(Color.black));
class M{
static JFileChooser jfc=new JFileChooser();
static Menu m=new Menu();
static CVS c=new CVS();
static SA sa=new SA();
static S ts=null,selected=null;
static Color fc,bc;
static void clear(){
sa.ss.clear();
c.repaint();
public static void cp() {
System.out.println(selected);
if(selected!=null){
selected.fillColor=m.fc.getBackground();
selected.borderColor=m.bc.getBackground();
selected.fc=m.fillC.isSelected();
selected.db=m.drawB.isSelected();
public static void up() {
sa.upZ(selected);
public static void down(){
sa.downZ(selected);
static{
jfc.setFileFilter(new FileNameExtensionFilter("JDraw file (*.jdraw,*.jdr)","jdr","jdraw"));
static void save(){
int x=jfc.showSaveDialog(c);
if(x==JFileChooser.APPROVE_OPTION){
File f = jfc.getSelectedFile();
try{
ObjectOutputStream oos=new ObjectOutputStream(new FileOutputStream(f));
oos.writeObject(sa);
oos.flush();
oos.close();
}catch(Exception e){}
static void load(){
int x=jfc.showOpenDialog(c);
ObjectInputStream oos=new ObjectInputStream(new FileInputStream(f));
Object r=oos.readObject();
if(r!=null){
sa=(SA)r;
}catch(Exception e){e.printStackTrace();}
static int mx,my,tx,ty,ox,oy;
static int pc=0,pmax;
static int sm;
static boolean ne=true;
static int mid;
static void mp(Point p){
mid=m.method.getSelectedIndex();
if(mid==0){
if(ne){
mx=p.x;my=p.y;
pc=0;
sm=m.sbox.getSelectedIndex();
ne=false;
++pc;
else if(mid==1){
checkSel(p);
sa.ss.remove(selected);
private static void checkSel(Point p) {
selected=null;
for(int i=sa.ss.size();i0; i--)
if(sa.ss.get(i-1).shape.contains(p)){
selected=sa.ss.get(i-1);break;
sa.select(selected);
static void mt(){
Shape s=null;
int cx,cy,cw,ch;
switch(sm){
case 0:
cx=Math.min(mx,tx);
cy=Math.min(my,ty);
cw=Math.abs(mx-tx);
ch=Math.abs(my-ty);
if(sm==0)
else
s=new Rectangle(cx,cy,cw,ch);
break;
case 1:
p.moveTo(mx,my);
if(pc==1){
p.lineTo(tx, ty);
else{
p.quadTo(ox,oy,tx,ty);
s=p;
ts=new S(s,m.fc.getBackground(),m.bc.getBackground(),m.fillC.isSelected(),m.drawB.isSelected(),null);
static void md(Point p){
if(!sa.ss.isEmpty()){
sa.ss.get(sa.ss.size()-1).sel=false;
if(pc1){
ox=p.x;oy=p.y;
tx=p.x;ty=p.y;
mt();
moveTo(selected,p);
static void moveTo(S s, Point p) {
if(s.shape instanceof Rectangle){
Rectangle r=(Rectangle)s.shape;
r.setLocation(r.x+p.x-mx,r.y+p.y-my);
e.setFrame(e.getX()+p.x-mx,e.getY()+p.y-my,e.getWidth(),e.getHeight());
static void mr(Point p) {
if(pc==pmax){
ne=true;
sa.add(ts);
selected=ts;
ts=null;
class S implements Serializable{
boolean fc,db,sel=true;
Shape shape;
Color fillColor,borderColor;
Stroke stroke;
static Stroke bstroke=new MyBasicStroke();
S(Shape s,Color c,Color b,boolean f,boolean d,Stroke k){
this.shape=s;this.fillColor=c;this.borderColor=b;this.fc=f;this.db=d;this.stroke=k==null?bstroke:k;
if(fc){
g.setColor(fillColor);
g.fill(shape);
if(db){
g.setColor(borderColor);
g.setStroke(stroke);
g.draw(shape);
if(sel){
g.setColor(Color.green);
g.setStroke(selectStroke);
g.draw(shape.getBounds());
class MyBasicStroke extends BasicStroke implements Serializable{}
class SA implements Serializable{
ArrayListS ss=new ArrayListS();
void add(S s){
if(s!=null){
for(S sx:ss)
sx.sel=false;
ss.add(s);
S remove(int i){
return ss.remove(i);
void remove(S s){
ss.remove(s);
void upZ(S s){
indexZ(s,1);
void downZ(S s){
indexZ(s,-1);
void indexZ(S s, int i) {
int si=ss.indexOf(s);
if(si+i0||si+iss.size()-1)return;
swap(s,ss.get(si+i));
void swap(S a,S b){
int ai=ss.indexOf(a);
int bi=ss.indexOf(b);
ss.set(ai,b);
ss.set(bi,a);
void select(S s){
for(S x:ss)
x.sel=false;
if(s!=null)
s.sel=true;
for(S s:ss)
s.draw(g);
看看下面的代码,新建类T,把代码拷进去便可运行.
有运行截图：
import java.util.*;
@SuppressWarnings({"serial","unused"})
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 toolFlag = 0;//toolFlag:工具标记
//toolFlag工具对应表：
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
@SuppressWarnings("unchecked")
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.addItemListener(this);
//橡皮大小选择
EraserChoice = new Choice();
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");
colchooser = new Button("显示调色板");
clear.setBackground(Color.GREEN);
drRect.setBackground(Color.GREEN);
pen.setBackground(Color.GREEN);
eraser.setBackground(Color.GREEN);
drLine.setBackground(Color.GREEN);
drCircle.setBackground(Color.GREEN);
colchooser.setBackground(Color.GREEN);
//各组件事件监听
eraser.addActionListener(this);
pen.addActionListener(this);
drLine.addActionListener(this);
drCircle.addActionListener(this);
drRect.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);
颜色.setBackground(Color.gray);
大小B.setBackground(Color.gray);
大小E.setBackground(Color.gray);
//面板添加组件
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);
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()
{ savePicture.setVisible(false); }
addWindowListener(new WindowAdapter()
{ System.exit(0);}
public void paint(Graphics g)
n = paintInfo.size();
g.clearRect(0,0,getSize().width,getSize().height);//清除
for(int i=1; in ;i++){
p1 = (Point)paintInfo.elementAt(i-1);
size = new BasicStroke(p1.boarder,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);
switch(p1.tool)
case 0://画笔
case 1://橡皮
g.clearRect(p1.x, p1.y, p1.boarder, p1.boarder);
i=i+1;
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")
else if(name=="green")
else if(name=="blue")
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(e.getSource()==EraserChoice)//橡皮大小
String Esize = EraserChoice.getSelectedItem();
@SuppressWarnings({"serial","unused", "unchecked"})
public void mouseDragged(MouseEvent e)
Point p1 ;
switch(toolFlag){
x = (int)e.getX();
y = (int)e.getY();
p1 = new Point(x, y, c, toolFlag, con);
paintInfo.addElement(p1);
p1 = new Point(x, y, null, toolFlag, Econ);
public void update(Graphics g)
paint(g);
public void mousePressed(MouseEvent e)
public void mouseReleased(MouseEvent e)
paintInfo.addElement(cutflag);
case 1: //eraser
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
paintInfo.removeAllElements();
if(e.getSource()==drLine)//画线
if(e.getSource()==drCircle)//画圆
if(e.getSource()==drRect)//画矩形
if(e.getSource()==colchooser)//调色板
Color newColor = JColorChooser.showDialog(this,"调色板",c);
c = newColor;
//end paintboard
public class T{
public static void main(String args[]){
new paintboard("画图程序"); }
import java.applet.*;
Button openPic,savePic;
openPic = new Button("打开图画");
savePic = new Button("保存图画");
openPic.addActionListener(this);
savePic.addActionListener(this);
toolPanel.add(openPic);
toolPanel.add(savePic);
for(int i=0; in ;i++){
p1 = (Point)paintInfo.elementAt(i);
if(e.getSource()==openPic)//打开图画
openPicture.setVisible(true);
if(openPicture.getFile()!=null)
int tempflag;
tempflag = toolFlag;
File filein = new File(openPicture.getDirectory(),openPicture.getFile());
picIn = new FileInputStream(filein);
VIn = new ObjectInputStream(picIn);
paintInfo = (Vector)VIn.readObject();
VIn.close();
toolFlag = tempflag;
System.out.println("can not read object");
catch(IOException IOe)
System.out.println("can not read file");
if(e.getSource()==savePic)//保存图画
savePicture.setVisible(true);
File fileout = new File(savePicture.getDirectory(),savePicture.getFile());
picOut = new FileOutputStream(fileout);
VOut = new ObjectOutputStream(picOut);
VOut.writeObject(paintInfo);
VOut.close();
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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