📄 draw.java
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//导入包
package xupeipei;
import java.awt.Graphics;
import java.awt.*;
import java.util.*;
import javax.swing.border.*;
import java.awt.Font.*;
import java.awt.image.*;
import java.awt.Frame;
import java.io.*;
import java.applet.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.awt.Toolkit;
import java.awt.Cursor;
public class Draw
{//定义变量
public static void main(String args[])
{
DrawImage Painting = new DrawImage();
Painting.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Painting.show();
}
}
//**************************************************************************************************************
//定义框架
class DrawImage extends JFrame
{
public static Color color;
public int x,y,x1,y1,x2,y2,width,height;
public boolean isFirstPoint = true;
public int drawType = PaintingGround.LINE;
Font f = new Font("幼圆",Font.BOLD,18) ;
//设置菜单
JMenuBar menuBar = new JMenuBar();
JMenu fileMenu = new JMenu("文件");
JMenuItem newItem =new JMenuItem("新建");
JMenuItem openItem =new JMenuItem("打开");
JMenuItem saveItem =new JMenuItem("保存");
JMenuItem exitItem =new JMenuItem("退出");
JMenu editMenu = new JMenu("编辑");
JMenuItem cutItem =new JMenuItem("剪切");
JMenuItem copyItem =new JMenuItem("复制");
JMenuItem pasteItem =new JMenuItem("粘贴");
JMenu imageMenu = new JMenu("图象");
JMenuItem cleanItem =new JMenuItem("清除");
JMenuItem shxItem =new JMenuItem("属性");
//定义组件
PaintingGround paintingGround = new PaintingGround();
JPanel ButtonPanel = new JPanel();
JLabel ColorLabel = new JLabel("color selected");
JButton ColorButton = new JButton();
JLabel TextLabel = new JLabel("button selected");
JTextField Text = new JTextField("");
JButton btLine = new JButton("line");
JButton btRectangle = new JButton("Rectangle");
JButton btRound = new JButton("Round");
JButton btEllipse = new JButton("Ellipse");
JButton fillRetangle = new JButton("fillRetangle");
JButton fillEllipse= new JButton("fillEllipse");
JButton clean = new JButton("clean");
JButton colorset = new JButton("colorset");
/***************构造方法*****************/
public DrawImage()
{
//改变标题图像
Toolkit tk=Toolkit.getDefaultToolkit() ;
Image image=tk.getImage("image.jpg"); /*image.jpg是你的图标*/
this.setIconImage(image);
//改变鼠标图像
Image img=tk.getImage("mouse.jpg"); /*mouse.jpg是你的图标*/
Cursor cu=tk.createCustomCursor(img,new Point(1,1),"stick");
this.setCursor(cu);
//设置标题和初始大小
setTitle("PaintingGround");
setSize(600,540);
//添加菜单
setJMenuBar(menuBar);
menuBar.add(fileMenu);
fileMenu.setFont(f);
fileMenu.add(newItem);
newItem.setFont(f);
fileMenu.add(openItem);
openItem.setFont(f);
/**************设置打开文件的监听器及实现的方法**************/
openItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent evn)
{
FileDialog d = new FileDialog(DrawImage.this,"打开文件",FileDialog.LOAD);
d.show();
}
});
fileMenu.add(saveItem);
saveItem.setFont(f);
/**************设置保存文件的监听器及实现的方法**************/
saveItem.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evn)
{
FileDialog d = new FileDialog(DrawImage.this,"保存文件",FileDialog.SAVE);
d.show();
}
});
fileMenu.add(exitItem);
exitItem.setFont(f);
/**************设置退出文件的监听器及实现的方法**************/
exitItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent evn)
{
System.exit(0);
}
});
//子菜单添加如菜单条
menuBar.add(editMenu);
editMenu.setFont(f);
editMenu.add(cutItem);
cutItem.setFont(f);
editMenu.add(copyItem);
copyItem.setFont(f);
editMenu.add(pasteItem);
pasteItem.setFont(f);
menuBar.add(imageMenu);
imageMenu.setFont(f);
imageMenu.add(cleanItem);
cleanItem.setFont(f);
imageMenu.add(shxItem);
shxItem.setFont(f);
/**************设置清除画板的监听器及实现的方法**************/
cleanItem.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evn) {
paintingGround.setBackground(Color.yellow);
}
});
//面板加入框架，设置空布局
Container c = getContentPane();
c.setLayout(null);
c.add(paintingGround);
paintingGround.setLocation(100,70);
paintingGround.setSize(500,360) ;
//将按钮加入面板，实现bt对按钮事件监听
ButtonPanel.setLayout(new GridLayout(8,1));
ButtonPanel.add(btLine);
btLine.setToolTipText("线");
ButtonPanel.add(btRectangle);
btRectangle.setToolTipText("矩形");
ButtonPanel.add(btRound);
btRound.setToolTipText("圆");
ButtonPanel.add(btEllipse);
btEllipse.setToolTipText("椭圆");
ButtonPanel.add(fillRetangle);
fillRetangle.setToolTipText("填充矩形");
ButtonPanel.add(fillEllipse);
fillEllipse.setToolTipText("填充椭圆");
ButtonPanel.add(clean);
clean.setToolTipText("清除");
ButtonPanel.add(colorset);
colorset.setToolTipText("设置颜色");
c.add(ButtonPanel);
ButtonPanel.setLocation(0,70);
ButtonPanel.setSize(98,400) ;
c.add(ColorLabel) ;
ColorLabel.setLocation(230,40);
ColorLabel.setSize(120,27);
c.add(ColorButton);
ColorButton.setLocation(360,40);
ColorButton.setSize(80,27);
c.add(TextLabel);
TextLabel.setLocation(0,40);
TextLabel.setSize(100,27);
c.add(Text);
Text.setLocation(102,40);
Text.setSize(120,27);
//设置绘图面板的监听器
paintingGround.addMouseListener(new MouseAdapter()
{
public void mouseReleased(MouseEvent evn)
{
isFirstPoint = true;
}
});
paintingGround.addMouseMotionListener(new MouseMotionAdapter()
{
public void mouseDragged(MouseEvent evn)
{
if(isFirstPoint)//if-else语句循环执行得到点坐标
{
x1 = evn.getX();
y1 = evn.getY();
isFirstPoint = false;
}
else
{
x2 = evn.getX();
y2 = evn.getY();
switch(drawType)
{
//画线
case PaintingGround.LINE:
// System.out.println("坐标1:"+x1+y1+"坐标2："+x2+y2);//得到坐标
paintingGround.drawLine(x1,y1,x2,y2);
break;
//画矫形
case PaintingGround.RECTANGLE:
paintingGround.drawRect(x2,y2,Math.abs(x2-x1),Math.abs(y2-y1));
// System.out.println("坐标1:"+x1+y1+"坐标2："+x2+y2);//得到坐标
break;
//画圆
case PaintingGround.ROUND:
//两点距离公式
int size = Math.abs((int)Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1)));
paintingGround.drawOval(x1,y1,size);
// System.out.println("坐标1:"+x1+y1+"坐标2："+x2+y2);//得到坐标
break;
//画椭圆
case PaintingGround.ELLIPSE:
// System.out.println("坐标:"+x1+y1+x2+y2);//得到坐标
// paintingGround.drawOval(x1,y1,Math.abs(x2-x1),Math.abs(y2-y1));
// System.out.println("坐标1:"+x1+y1+"坐标2："+x2+y2);//得到坐标
break;
//画填充矩形
case PaintingGround.FILLRECTANGLE:
paintingGround.fillRect(x1,y1,Math.abs(x2-x1),Math.abs(y2-y1));
// System.out.println("坐标1:"+x1+y1+"坐标2："+x2+y2);//得到坐标
break;
//画填充椭圆
case PaintingGround.FILLELLIPSE:
paintingGround.fillOval(x1,y1,Math.abs(x2-x1),Math.abs(y2-y1));
// System.out.println("坐标1:"+x1+y1+"坐标2："+x2+y2);//得到坐标
break;
//清除
case PaintingGround.CLEAN:
paintingGround.clearRect(x1,y1,x2,y2);
default:
break;
}
}
}
});
//设置按扭的监听器
btLine.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evn) {
drawType = PaintingGround.LINE;
Text.setText("线");
}
});
btRectangle.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evn) {
drawType = PaintingGround.RECTANGLE;
Text.setText("矩形");
}
});
btRound.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evn) {
drawType = PaintingGround.ROUND;
Text.setText("圆");
}
});
btEllipse.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evn) {
drawType = PaintingGround.ELLIPSE;
Text.setText("椭圆");
}
});
fillRetangle.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evn) {
drawType = PaintingGround.FILLRECTANGLE;
Text.setText("填充矩形");
}
});
fillEllipse.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evn) {
drawType = PaintingGround.FILLELLIPSE;
Text.setText("填充椭圆");
}
});
clean.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evn) {
drawType = PaintingGround.CLEAN;
Text.setText("橡皮");
}
});
colorset.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evn) {
Text.setText("颜色设置");
color = JColorChooser.showDialog(DrawImage.this, "Choose a color", null);
ColorButton.setBackground(color) ;
}
});
}
}
// **********************************************************************************************************
//定义绘图面板，设置参数
class PaintingGround extends JPanel
{
public static final int LINE = 1;
public static final int RECTANGLE = 2;
public static final int ROUND = 3;
public static final int ELLIPSE = 4;
public static final int FILLRECTANGLE = 5;
public static final int FILLELLIPSE = 6;
public static final int CLEAN = 7;
public static final int COLORSET = 8;
private int x1,y1;
private int x2,y2;
private int width, height,size;
private int drawType = 0;
public PaintingGround()
{
setBackground(Color.pink);
}
public void paint(Graphics g)
{
super.paint(g);
g.setColor(DrawImage.color);
switch(drawType)
{ case LINE:
g.drawLine(x1,y1,x2,y2);break;
case RECTANGLE:
g.drawRect(x1,y1,width,height); break;
case ROUND:
g.drawOval(x1,y1,size,size); break;
case ELLIPSE:
g.drawOval(x1,y1,width,height); break;
case FILLRECTANGLE:
g.fillRect(x1,y1,width,height); break;
case FILLELLIPSE:
g.fillOval(x1,y1,width,height); break;
case CLEAN:
g.setColor(Color.white);
g.clearRect(x1,y1,width,height); break;
default : break;
}
}
public void drawLine(int x1, int y1, int x2,int y2) {
this.x1 = x1;
this.y1 = y1;
this.x2 = x2;
this.y2 = y2;
drawType = LINE;
repaint();
}
//具体的实现方式
public void drawRect(int x1,int y1,int width, int height) {
this.x1 = x1;
this.y1 = y1;
this.width = width;
this.height = height;
drawType = RECTANGLE;
repaint();
}
public void drawOval(int x1,int y1,int size) {
this.x1 = x1;
this.y1 = y1;
this.size = size;
drawType = ROUND;
repaint();
}
public void fillRect(int x1,int y1,int width, int height) {
this.x1 = x1;
this.y1 = y1;
this.width = width;
this.height = height;
drawType = FILLRECTANGLE;
repaint();
}
public void fillOval(int x1,int y1,int width,int height) {
this.x1 = x1;
this.y1 = y1;
this.width = width;
this.height = height;
drawType = FILLELLIPSE;
repaint();
}
public void clearRect(int x1,int y1,int width, int height) {
this.x1 = x1;
this.y1 = y1;
this.width = width;
this.height = height;
drawType = CLEAN;
repaint();
}
}
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