一起來畫畫java代碼,java繪畫圖的代碼

JAVA畫時鐘代碼

import?java.awt.*;

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import?java.awt.event.*;

import?javax.swing.*;

import?sun.util.calendar.Gregorian;

import?java.util.Calendar;

import?java.util.GregorianCalendar;

public?class?ClockPointer?extends?JFrame{

int?x,?y,?x0,?y0,?r,?h,?olds_x,?olds_y,?oldm_x,?oldm_y,?oldh_x,?oldh_y,?

ss,mm,?hh,?old_m,?old_h,?ang;

final?double?RAD?=?Math.PI/180;

public?ClockPointer(){

super("Java時鐘");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Image?image?=?getToolkit().getImage("clock.gif");

setIconImage(image);

setSize(400,400);

setBackground(Color.white);

//setLocation(300,150);

this.setLocationRelativeTo(null);

setResizable(true);

int?delay?=?1000;

//創(chuàng)建一個監(jiān)聽事件

setVisible(true);

ActionListener?drawClock?=?new?ActionListener(){

public?void?actionPerformed(ActionEvent?evt){

repaint();

}

};

//創(chuàng)建一個時間計數(shù)器，每一秒觸發(fā)一次

new?Timer(delay,?drawClock).start();

}

java.text.SimpleDateFormat?fmTime?=?new?java.text.SimpleDateFormat("HH:mm:ss");

//繪制圖形

public?void?paint(Graphics?g){

super.paint(g);

g.setFont(null);

Graphics2D?g2D?=?(Graphics2D)g;

Insets?insets?=?getInsets();

int?L?=?insets.left/2,?T?=?insets.top/2;

h?=?getSize().height;

g.setColor(Color.white);

//畫圓

g2D.setStroke(new?BasicStroke(2.0f));

g.setColor(Color.gray);

g.drawOval(L+40,?T+40,?h-80,?h-80);

r?=?h/2?-?40;

x0?=?40?+?r?-?5?+?L;

y0?=?40?+?r?-?5?-?T;

ang?=?60;

//繪制時鐘上的12個字

for(int?i?=?1;i?=?12;i?++){

x?=?(int)((r+10)*Math.cos(RAD*ang)+x0);

y?=?(int)((r+10)*Math.sin(RAD*ang)+y0);

g.setColor(Color.black);

g.drawString(""+i,?x,?h-y);

ang?-=30;

}

//獲得現(xiàn)在的時間

Calendar?now?=?new?GregorianCalendar();

int?nowh?=?now.get(Calendar.HOUR_OF_DAY);

int?nowm?=?now.get(Calendar.MINUTE);

int?nows?=?now.get(Calendar.SECOND);

String?st=fmTime.format(now.getTime());

//在窗體上顯示時間

g.setColor(Color.pink);

g.fillRect(L,?T,?50,?28);

g.setColor(Color.blue);

g.drawString(st,L+2,T+26);

//計算時間與度數(shù)的關(guān)系

ss?=?90?-?nows*6;

mm?=?90?-?nowm*6;

hh?=?90?-?nowh*30?-?nowm/2;

x0?=?r+40+L;

y0?=?r+40+T;

g2D.setStroke(new?BasicStroke(1.2f));

//擦除秒針

//if(olds_x??0){

//????g.setColor(getBackground());

//????//?g.setColor(Color.gray);

//????g.drawLine(x0,?y0,?olds_x,?h-olds_y);?//?(?)

//}

//繪制秒針

x?=?(int)(r*0.9*Math.cos(RAD*ss))+x0;

y?=?(int)(r*0.9*Math.sin(RAD*ss))+y0-2*T;

g.setColor(Color.yellow);

g.drawLine(x0,?y0,?x,?h-y);

olds_x?=?x;

olds_y?=?y;

g2D.setStroke(new?BasicStroke(2.2f));

//擦除分針

//if(old_m!=mm){

//????g.setColor(getBackground());

//????g.drawLine(x0,y0,oldm_x,h-oldm_y);

//}

//繪制分針

x?=?(int)(r*0.7*Math.cos(RAD*mm))+x0;

y?=?(int)(r*0.7*Math.sin(RAD*mm))+y0-2*T;

g.setColor(Color.green);

g.drawLine(x0,y0,x,h-y);

oldm_x?=?x;

oldm_y?=?y;

old_m?=?mm;

g2D.setStroke(new?BasicStroke(3.2f));

//擦除時針

//if(old_h!=hh){

//????g.setColor(getBackground());

//????g.drawLine(x0,y0,oldh_x,h-oldh_y);

//}

//繪制時針

x?=?(int)(r*0.5*Math.cos(RAD*hh))+x0;

y?=?(int)(r*0.5*Math.sin(RAD*hh))+y0-2*T;

g.setColor(Color.red);

g.drawLine(x0,y0,x,h-y);

oldh_x?=?x;

oldh_y?=?y;

old_h?=?hh;

}

public?static?void?main(String[]?args){

new?ClockPointer();

}

//整理一下

請寫出用java代碼畫一個圓

靠,樓上的回答那么長啊,只要一個函數(shù),就是

drawOval(int x,int y,int w,int h); 這是是畫橢圓形的函數(shù),但是它也可以畫圓形。

比如 drawOval(100,100,50,50); 就在坐標(biāo)50，50畫一個直徑100的圓,只要把,最后的2個參數(shù)設(shè)成一樣就是一個圓。要畫直徑200的話,就把最后2個參數(shù)設(shè)成200,200 一切OK了

寫一個java程序，使其畫一個正方形并改變它的顏色（每秒鐘改變一次）。求完整代碼謝謝

按照你的要求,編寫的Java程序如下

import?java.awt.Color;

import?java.awt.Graphics;

import?javax.swing.JFrame;

public?class?F?extends?JFrame?implements?Runnable{

Color[]?colors?=?{Color.red,Color.orange,Color.yellow,Color.green,Color.cyan,Color.blue,Color.magenta,Color.black};??

int?i=0;

F(){

setTitle("變色正方形");

setSize(400,?400);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setLocationRelativeTo(null);

setVisible(true);

}

public?void?paint(Graphics?g){

g.setColor(colors[i]);

g.drawRect(100,100,200,200);

}

@Override

public?void?run()?{

while(true){

try?{

Thread.sleep(1000);

}?catch?(InterruptedException?e)?{

e.printStackTrace();

}

if(i7)

i++;

else

i=0;

repaint();

}

public?static?void?main(String[]?args)?{

F?f=new?F();

Thread?t=new?Thread(f);

t.start();

}

運行結(jié)果

GUI畫圖板（繪圖板）設(shè)計，用Java編寫程序代碼?。≈x謝?。?/h2>
只有矩形有圓形能移動，其它實現(xiàn)起來麻煩點，辦法有的只是代碼太多。
畫圓弧改成了畫曲線，圓弧稍麻煩，當(dāng)然方法是很簡單的，你可以自己思考一下。
雙擊13個顏色中的任意一個都會彈出顏色選擇器。
有保存與打開功能。擴展名請用 .jdr
基本滿足條件，細(xì)節(jié)可能不是很好，另，代碼比較亂，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.setDefaultCloseOperation(3);
f.setSize(880,600);
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();
tbuff=new BufferedImage(w,h,3);
makeBuff(w,h);
}
private void makeBuff(int w,int h) {
Graphics g = tbuff.getGraphics();
g.drawImage(buff,0,0,null);
g.dispose();
buff=new BufferedImage(w,h,3);
g=buff.getGraphics();
g.drawImage(tbuff,0,0,null);
g.dispose();
}
BufferedImage buff,tbuff;
CVS(){
this.addComponentListener(this);
this.addMouseListener(this);
this.addMouseMotionListener(this);
buff=new BufferedImage(1,1,3);
}
public void paint(Graphics gr){
Graphics2D g = buff.createGraphics();
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);
g.dispose();
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);
cl=new CLabel[13];
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();
if(e.getClickCount()==2){
Color sc=JColorChooser.showDialog(null, "Color chooser", l.getBackground());
l.setBackground(sc);
mousePressed(e);
}
}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mousePressed(MouseEvent 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));
this.setPreferredSize(new Dimension(10,20));
}
}
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();
c.repaint();
}
}
public static void up() {
if(selected!=null){
sa.upZ(selected);
c.repaint();
}
}
public static void down(){
if(selected!=null){
sa.downZ(selected);
c.repaint();
}
}
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);
if(x==JFileChooser.APPROVE_OPTION){
File f = jfc.getSelectedFile();
try{
ObjectInputStream oos=new ObjectInputStream(new FileInputStream(f));
Object r=oos.readObject();
if(r!=null){
sa=(SA)r;
c.repaint();
}
oos.close();
}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();
pmax=sm==4?2:1;
ne=false;
}
++pc;
}
else if(mid==1){
checkSel(p);
mx=p.x;my=p.y;
}
else if(mid==2){
checkSel(p);
if(selected!=null){
sa.ss.remove(selected);
c.repaint();
}
}
}
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);
c.repaint();
}
static void mt(){
Shape s=null;
int cx,cy,cw,ch;
switch(sm){
case 0:
case 2:
cx=Math.min(mx,tx);
cy=Math.min(my,ty);
cw=Math.abs(mx-tx);
ch=Math.abs(my-ty);
if(sm==0)
s=new Ellipse2D.Double(cx,cy,cw,ch);
else
s=new Rectangle(cx,cy,cw,ch);
break;
case 1:
s=new Line2D.Float(mx,my,tx,ty);
break;
case 3:
cw=Math.abs(mx-tx);
ch=Math.abs(my-ty);
int cd=(int)Math.sqrt(Math.pow(mx-tx,2)+Math.pow(my-ty,2))2;
cx=mx-cd/2;
cy=my-cd/2;
s=new Ellipse2D.Double(cx,cy,cd,cd);
break;
case 4:
Path2D p=new Path2D.Double();
p.moveTo(mx,my);
if(pc==1){
p.lineTo(tx, ty);
}
else{
p.quadTo(ox,oy,tx,ty);
}
s=p;
break;
}
ts=new S(s,m.fc.getBackground(),m.bc.getBackground(),m.fillC.isSelected(),m.drawB.isSelected(),null);
c.repaint();
}
static void md(Point p){
if(mid==0){
if(!sa.ss.isEmpty()){
sa.ss.get(sa.ss.size()-1).sel=false;
}
if(pc1){
ox=p.x;oy=p.y;
}
else{
tx=p.x;ty=p.y;
}
mt();
}
else if(mid==1){
if(selected!=null){
moveTo(selected,p);
c.repaint();
}
}
else if(mid==2){
checkSel(p);
if(selected!=null){
sa.ss.remove(selected);
c.repaint();
}
}
}
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);
mx=p.x;my=p.y;
}
else if(s.shape instanceof Ellipse2D){
Ellipse2D e=(Ellipse2D)s.shape;
e.setFrame(e.getX()+p.x-mx,e.getY()+p.y-my,e.getWidth(),e.getHeight());
mx=p.x;my=p.y;
}
}
static void mr(Point p) {
if(pc==pmax){
pc=0;
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();
static Stroke selectStroke=new BasicStroke(1,BasicStroke.CAP_BUTT,BasicStroke.JOIN_MITER,1,new float[]{5,2},1);
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;
}
void draw(Graphics2D g){
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;
}
void drawAll(Graphics2D g){
for(S s:ss)
s.draw(g);
}
}

java繪圖，求代碼

上代碼：

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.FlowLayout;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.LayoutManager;

import java.awt.Paint;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTextField;

import java.awt.event.*;

public class YuanYiDong extends JFrame{

private static int BANJIN=0;

private static int X=0;

private static int Y=0;

JTextField rTxt=new JTextField(5);

JTextField xField=new JTextField(5);

JTextField yField=new JTextField(5);

JButton paintBt=new JButton("畫");

JLabel huaban=new huaban();

JPanel jPanel=new JPanel();

JLabel banjingLabel,xLabel,yLabel;

public YuanYiDong(){

banjingLabel=new JLabel("半徑");

xLabel=new JLabel("X坐標(biāo)");

yLabel=new JLabel("Y坐標(biāo)");

this.setTitle("圓的移動");

this.setLocation(300,100);

this.setSize(500, 400);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

this.add(rTxt);

jPanel.setLayout(new FlowLayout());

add(huaban,BorderLayout.CENTER);

jPanel.add(banjingLabel);

jPanel.add(rTxt);

jPanel.add(xLabel);

jPanel.add(xField);

jPanel.add(yLabel);

jPanel.add(yField);

jPanel.add(paintBt);

add(jPanel,BorderLayout.NORTH);

paintBt.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

BANJIN=Integer.parseInt(rTxt.getText());

X=Integer.parseInt(xField.getText());

Y=Integer.parseInt(yField.getText());

huaban.repaint();

}

});

}

private void drawCirlce(Graphics g) {

g.setColor(Color.blue);

g.fillOval(X, Y, BANJIN,BANJIN);

}

public static void main(String[] args) {

YuanYiDong frame = new YuanYiDong();

}

public class huaban extends JLabel{

public huaban(){}

public void paint(Graphics g) {

Image image = createImage(getWidth(), getHeight());

drawCirlce(image.getGraphics());

g.drawImage(image, 0, 0, null);

}

給分吧！

JAVA編譯簡易畫圖板代碼

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;//畫筆大小

int Econ = 5;//橡皮大小

int toolFlag = 0;//toolFlag:工具標(biāo)記

//toolFlag工具對應(yīng)表：

//（0--畫筆）；（1--橡皮）；（2--清除）；

//（3--直線）；（4--圓）；（5--矩形）；

Color c = new Color(0,0,0); //畫筆顏色

BasicStroke size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);//畫筆粗細(xì)

Point cutflag = new Point(-1, -1, c, 6, con);//截斷標(biāo)志

Vector paintInfo = null;//點信息向量組

int n = 1;

FileInputStream picIn = null;

FileOutputStream picOut = null;

ObjectInputStream VIn = null;

ObjectOutputStream VOut = null;

// *工具面板--畫筆，直線，圓，矩形，多邊形,橡皮，清除*/

Panel toolPanel;

Button eraser, drLine,drCircle,drRect;

Button clear ,pen;

Choice ColChoice,SizeChoice,EraserChoice;

Button colchooser;

Label 顏色,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();

/*各工具按鈕及選擇項*/

//顏色選擇

ColChoice = new Choice();

ColChoice.add("black");

ColChoice.add("red");

ColChoice.add("blue");

ColChoice.add("green");

ColChoice.addItemListener(this);

//畫筆大小選擇

SizeChoice = new Choice();

SizeChoice.add("1");

SizeChoice.add("3");

SizeChoice.add("5");

SizeChoice.add("7");

SizeChoice.add("9");

SizeChoice.addItemListener(this);

//橡皮大小選擇

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("畫筆");

drLine = new Button("畫直線");

drCircle = new Button("畫圓形");

drRect = new Button("畫矩形");

openPic = new Button("打開圖畫");

savePic = new Button("保存圖畫");

colchooser = new Button("顯示調(diào)色板");

//各組件事件監(jiān)聽

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);

顏色 = new Label("畫筆顏色",Label.CENTER);

大小B = new Label("畫筆大小",Label.CENTER);

大小E = new Label("橡皮大小",Label.CENTER);

//面板添加組件

toolPanel.add(openPic);

toolPanel.add(savePic);

toolPanel.add(pen);

toolPanel.add(drLine);

toolPanel.add(drCircle);

toolPanel.add(drRect);

toolPanel.add(顏色); 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,"打開圖畫",FileDialog.LOAD);

openPicture.setVisible(false);

savePicture = new FileDialog(this,"保存圖畫",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=0; in ;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://畫筆

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://畫直線

Line2D line2 = new Line2D.Double(p1.x, p1.y, p2.x, p2.y);

g2d.draw(line2);

break;

case 4://畫圓

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://畫矩形

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://截斷，跳過

i=i+1;

break;

default :

}//end switch

}//end if

}//end for

}

public void itemStateChanged(ItemEvent e)

{

if(e.getSource()==ColChoice)//預(yù)選顏色

{

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)//畫筆大小

{

String selected = SizeChoice.getSelectedItem();

if(selected=="1")

{

con = 1;