my_interface.java

Java写的画板程序

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;


class my_interface extends Frame implements ActionListener,MouseListener,MouseMotionListener,ItemListener{
        JButton b_pencil=new JButton("画笔");
        JButton b_Oval=new JButton("椭圆");
		JButton b_Rect=new JButton("矩形");
		JButton b_RoundRect=new JButton("圆矩形");
		JButton b_Line=new JButton("直线");
		JButton b_Arc=new JButton("圆弧");
	    JButton b_OVAL=new JButton("圆形");
	    JButton clear=new JButton("清空");
        JRadioButton c_red=new JRadioButton("红色");
		JRadioButton c_Yellow=new JRadioButton("黄色");
		JRadioButton c_Green=new JRadioButton("绿色");
		JRadioButton c_Black=new JRadioButton("黑色");
		JRadioButton c_Blue=new JRadioButton("蓝色");
		JRadioButton c6=new JRadioButton("调色板");
       	int i=0;            //控制颜色
       	ButtonGroup color=new ButtonGroup();  //颜色的按钮组
        ButtonGroup fill=new ButtonGroup();
	    JRadioButton fillt=new JRadioButton("填充");
	    JRadioButton filln=new JRadioButton("不填充");
    	Color c;            //颜色
     	Toolkit tool=getToolkit();       //用来获取屏幕大小
        int x,y;
        int mouseflag=0;    //鼠标是否在拖动
        int x1,y1,x2,y2,x3,y3;    //用于划线的坐标
        int xs,ys,xe,ye;    //xs,ys是起点坐标，xe,ye是终点坐标
        Vector vector=new Vector();  //用来存放图形的向量
        TextField t1=new TextField(3);
        TextField t2=new TextField(3);
        Label l1=new Label("弧度");
        Label l2=new Label(",");
        int hudu1,hudu2;
        Boolean qline=false;
        Boolean mm=false;
        Boolean mf=false;
        
    ////*****构造函数*********/////
	my_interface() throws Exception{}
			
	///////*******动作响应事件****/////////
	public void actionPerformed(ActionEvent e){}
	public void mouseMoved(MouseEvent e){}
    public  void paint(Graphics g){}
	public void itemStateChanged(ItemEvent e){}
	public void mousePressed(MouseEvent e){}
	public void mouseReleased(MouseEvent e){}
    public void mouseDragged(MouseEvent e){}
	public void mouseEntered(MouseEvent e){}
	public void mouseExited(MouseEvent e){}
	public void mouseClicked(MouseEvent e){}
}