求个JAVA画图程序_CMS教程

//:Pjava

//用法，将所有内容保存到文件 Pjava 编译运行就行了，鼠标点到哪里，矩形就画到哪里！

import javaawt;

import javaawtevent;

import javaxswing;

public class P {

public static void main(String[] args) {

new FrameX()setVisible(true);

}

class FrameX extends JFrame implements ActionListener{

private JComboBox mode,color,radius;

private JPanel menu;

private JButton clear,reset;

private CanvasX canvas;

private int x,y;

private static Color[] cs = {Coloryellow,Colorred,Colorblue,Colorgreen,};

public FrameX(){

super("画图哦～～呵呵");

thissetDefaultCloseOperation(JFrameEXIT_ON_CLOSE);

thissetSize(600,400);

thissetLocationRelativeTo(null);

thismode=new JComboBox(new Object[]{"填充","描边",});

thiscolor = new JComboBox(new Object[]{"黄","红","蓝","绿",});

thisradius=new JComboBox(new Object[]{"20","35","50","70","100","150",});

thismenu=new JPanel(null);

thismenusetPreferredSize(new Dimension(1,30));

thisgetContentPane()add(menu,"South");

JLabel l = new JLabel("模式：");

lsetSize(40,23);

lsetLocation(10,0);

thismenuadd(l);

thismodesetBounds(lgetWidth(),0,60,23);

thismenuadd(mode);

thismodeaddActionListener(this);

l = new JLabel("颜色：");

lsetBounds(modegetX()+modegetWidth()+10,0,40,23);

thismenuadd(l);

thiscolorsetBounds(lgetX()+lgetWidth(),0,60,23);

thiscoloraddActionListener(this);

thismenuadd(color);

l = new JLabel("半径：");

lsetBounds(colorgetX()+colorgetWidth()+10,0,40,23);

thismenuadd(l);

thisradiussetBounds(lgetX()+lgetWidth(),0,60,23);

thisradiusaddActionListener(this);

thismenuadd(radius);

thisreset=new JButton("清除");

thisresetsetBounds(radiusgetX()+radiusgetWidth()+20,0,78,23);

thisresetaddActionListener(this);

thismenuadd(reset);

thiscanvas=new CanvasX();

thisgetContentPane()add(canvas,"Center");

thisreset();

}

public void actionPerformed(ActionEvent e) {

Object o = egetSource();

if(oequals(reset))reset();

else thiscanvassetShapeX(makeShapeX());

}

private ShapeX makeShapeX() {

int wh = IntegerparseInt(radiusgetSelectedItem()toString());

Rectangle r = new Rectangle(0,0,wh,wh);

int mod = thismodegetSelectedIndex()+1;

Color c = cs[thiscolorgetSelectedIndex()];

ShapeX s = new ShapeX();

sbc=c;

sfc=c;

smod=mod;

ss=r;

return s;

}

private void reset() {

thiscanvasclear();

thismodesetSelectedIndex(0);

thiscolorsetSelectedIndex(0);

thisradiussetSelectedIndex(0);

thiscanvassetShapeX(makeShapeX());

}

class ShapeX{

Shape s;

int mod;

Color fc,bc;

}

class CanvasX extends Canvas implements MouseListener{

public static final int MODE_FILL=1;

public static final int MODE_DRAW=2;

private ShapeX sx;

public CanvasX(){

thisaddMouseListener(this);

}

public void setShapeX(ShapeX x){

thissx=x;

}

public void clear(){

Graphics g = thisgetGraphics();

if(g==null)return;

gsetColor(Colorwhite);

gfillRect(0,0,thisgetWidth(),thisgetHeight());

gdispose();

sx=null;

}

public void process(int x,int y){

if(sx==null)return;

Rectangle r = (Rectangle)sxs;

rsetBounds(x-rwidth/2,y-rheight/2,rwidth,rheight);

Graphics2D g = (Graphics2D)thisgetGraphics();

if(sxmod==MODE_FILL){

gsetColor(sxfc);

gfill(sxs);

}

else if(sxmod==MODE_DRAW){

gsetColor(sxbc);

gdraw(sxs);

}

else if(sxmod==(MODE_FILL|MODE_DRAW)){

gsetColor(sxfc);

gfill(sxs);

gsetColor(sxbc);

gdraw(sxs);

}

gdispose();

}

public void mouseClicked(MouseEvent e) {}

public void mouseEntered(MouseEvent e) {}

public void mouseExited(MouseEvent e) {}

public void mousePressed(MouseEvent e) {process(egetX(),egetY());}

public void mouseReleased(MouseEvent e) {}

}

import javaapplet;

import javaawt;

import javaawtevent;

public class Tester extends Applet implements ActionListener

{

Button btn1,btn2,btn3,btn4;

public void init(){

setLayout(null);

btn1=new Button("绘制直线");

btn2=new Button("绘制矩形");

btn3=new Button("绘制圆");

add(btn1);

add(btn2);

add(btn3);

btn1setBounds(10, 60, 60, 20);

btn2setBounds(10, 90, 60, 20);

btn3setBounds(10, 120, 60, 20);

btn1addActionListener(this);

btn2addActionListener(this);

btn3addActionListener(this);

validate();

setVisible(true);

}

public void start(){

}

public void actionPerformed(ActionEvent e)

{

Graphics g=thisgetGraphics();

if(egetSource()==btn1)

{

gdrawLine(200, 100, 300, 200);

}

else if(egetSource()==btn2)

{

gdrawRect(200, 250, 200, 200);

}

else

{

gdrawArc(200, 500, 200, 200, 0, 360);

}

import javaapplet;

import javaawt;

import javaawtevent;

import javautil;

import javaxswing;

import javaawtgeom;

import javaio;

import javasqlConnection;

class Point implements Serializable

{

int x,y;

Color col;

int tool;

int boarder;

Point(int x, int y, Color col, int tool, int boarder)

{

thisx = x;

thisy = y;

thiscol = col;

thistool = tool;

thisboarder = 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,BasicStrokeCAP_BUTT,BasicStrokeJOIN_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();

ColChoiceadd("black");

ColChoiceadd("red");

ColChoiceadd("blue");

ColChoiceadd("green");

ColChoiceaddItemListener(this);

//画笔大小选择

SizeChoice = new Choice();

SizeChoiceadd("1");

SizeChoiceadd("3");

SizeChoiceadd("5");

SizeChoiceadd("7");

SizeChoiceadd("9");

SizeChoiceaddItemListener(this);

//橡皮大小选择

EraserChoice = new Choice();

EraserChoiceadd("5");

EraserChoiceadd("9");

EraserChoiceadd("13");

EraserChoiceadd("17");

EraserChoiceaddItemListener(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

clearaddActionListener(this);

eraseraddActionListener(this);

penaddActionListener(this);

drLineaddActionListener(this);

drCircleaddActionListener(this);

drRectaddActionListener(this);

openPicaddActionListener(this);

savePicaddActionListener(this);

colchooseraddActionListener(this);

颜色 = new Label("画笔颜色",LabelCENTER);

大小B = new Label("画笔大小",LabelCENTER);

大小E = new Label("橡皮大小",LabelCENTER);

//面板添加组件

toolPaneladd(openPic);

toolPaneladd(savePic);

toolPaneladd(pen);

toolPaneladd(drLine);

toolPaneladd(drCircle);

toolPaneladd(drRect);

toolPaneladd(颜色); toolPaneladd(ColChoice);

toolPaneladd(大小B); toolPaneladd(SizeChoice);

toolPaneladd(colchooser);

toolPaneladd(eraser);

toolPaneladd(大小E); toolPaneladd(EraserChoice);

toolPaneladd(clear);

//工具面板到APPLET面板

add(toolPanel,BorderLayoutNORTH);

setBounds(60,60,900,600); setVisible(true);

validate();

//dialog for save and load

openPicture = new FileDialog(this,"打开图画",FileDialogLOAD);

openPicturesetVisible(false);

savePicture = new FileDialog(this,"保存图画",FileDialogSAVE);

savePicturesetVisible(false);

openPictureaddWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{ openPicturesetVisible(false); }

});

savePictureaddWindowListener(new WindowAdapter()

{

@Override

public void windowClosing(WindowEvent e)

{ savePicturesetVisible(false); }

});

addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{ Systemexit(0);}

});

}

public void paint(Graphics g)

{

Graphics2D g2d = (Graphics2D)g;

Point p1,p2;

n = paintInfosize();

if(toolFlag==2)

gclearRect(0,0,getSize()width,getSize()height);//清除

for(int i=0; i<n ;i++){

p1 = (Point)paintInfoelementAt(i);

p2 = (Point)paintInfoelementAt(i+1);

size = new BasicStroke(p1boarder,BasicStrokeCAP_BUTT,BasicStrokeJOIN_BEVEL);

g2dsetColor(p1col);

g2dsetStroke(size);

if(p1tool==p2tool)

{

switch(p1tool)

{

case 0://画笔

Line2D line1 = new Line2DDouble(p1x, p1y, p2x, p2y);

g2ddraw(line1);

break;

case 1://橡皮

gclearRect(p1x, p1y, p1boarder, p1boarder);

break;

case 3://画直线

Line2D line2 = new Line2DDouble(p1x, p1y, p2x, p2y);

g2ddraw(line2);

break;

case 4://画圆

Ellipse2D ellipse = new Ellipse2DDouble(p1x, p1y, Mathabs(p2x-p1x) , Mathabs(p2y-p1y));

g2ddraw(ellipse);

break;

case 5://画矩形

Rectangle2D rect = new Rectangle2DDouble(p1x, p1y, Mathabs(p2x-p1x) , Mathabs(p2y-p1y));

g2ddraw(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(egetSource()==ColChoice)//预选颜色

{

String name = ColChoicegetSelectedItem();

switch (name) {

case "black":

c = new Color(0,0,0);

break;

case "red":

c = new Color(255,0,0);

break;

case "green":

c = new Color(0,255,0);

break;

case "blue":

c = new Color(0,0,255);

break;

}

else if(egetSource()==SizeChoice)//画笔大小

{

String selected = SizeChoicegetSelectedItem();

switch (selected) {

case "1":

con = 1;