lable.java

类似腾讯的聊天以及涂鸦的软件等等一系列的东西

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.Image;
import java.awt.event.*;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.awt.*;
import java.util.ArrayList;

import javax.swing.*;

public class lable extends JFrame implements ActionListener{

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	/**
	 * @param args
	 */
	
	private double px,py,px2,py2;
	boolean drawn=false;
	int status=0;
	Graphics g3=getGraphics();
    Graphics2D g2=(Graphics2D) g3;
	 public String command="";
	 private ArrayList<Rectangle2D>juxing;
     private ArrayList<Ellipse2D>tuoyuan;
     private ArrayList<Line2D>zhixian;
     private ArrayList<Line2D>qianbi;
     private Rectangle2D currentju;
     private Ellipse2D currenttuo;
     private Line2D currentzhi;
     private Line2D currentqian;
     private JColorChooser chose;
  
	
	 public static final int WIDTH = 700;
	 public static final int HEIGHT = 500;
	 public static final int width = 400;
	 public static final int height = 200;
	 public static final int VERTICAL_STRUT_SIZE = 10;
	 public static final int LINES = 15;
	 public static final int CHAR_PER_LINE = 13;
	 public static final int CHAR_LINE = 5;
	 
	 private JTextArea theText;
	 private JTextArea inputText;
	 private String memo1 = "No Memo 1.";
	 private String memo2 = "No Memo 2.";
	 
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		lable guiAdder = new lable( );
        guiAdder.setVisible(true);

	}
	public lable(){
		    setTitle("sun 涂鸦");
	        addWindowListener(new WindowDestroyer( ));
	        setSize(WIDTH, HEIGHT);
	        Container contentPane = getContentPane( );
	        contentPane.setLayout(new BorderLayout( ));
	        
	        JMenu memoMenu = new JMenu("文件");
	        JMenuItem m;

	        m = new JMenuItem("新建");
	        m.addActionListener(this);
	        memoMenu.add(m);

	        m = new JMenuItem("保存");
	        m.addActionListener(this);
	        memoMenu.add(m);

	        m = new JMenuItem("另存为");
	        m.addActionListener(this);
	        memoMenu.add(m);

	        m = new JMenuItem("Get Memo 2");
	        m.addActionListener(this);
	        memoMenu.add(m);

	        m = new JMenuItem("Clear");
	        m.addActionListener(this);
	        memoMenu.add(m);

	        m = new JMenuItem("Exit");
	        m.addActionListener(this);
	        memoMenu.add(m);

	        JMenuBar mBar = new JMenuBar();
	        mBar.add(memoMenu);
	        contentPane.add(mBar, BorderLayout.NORTH);

	        
	        JPanel buttonPaneone = new JPanel( );
	        buttonPaneone.setBackground(Color.ORANGE);
	       // buttonPaneone.setLayout(new FlowLayout( ));
	        Box leftBox = Box.createVerticalBox( );

	        Component leftStrut = Box.createVerticalStrut(VERTICAL_STRUT_SIZE); 
	        leftBox.add(leftStrut);
	        
	        JPanel textPanel = new JPanel();
	        textPanel.setLayout(new BorderLayout( ));
	        textPanel.setBackground(Color.BLUE);
	        theText = new JTextArea(LINES, CHAR_PER_LINE);
	        theText.setText("Menu bar is at the bottom.");
	        theText.setBackground(Color.WHITE);
			theText.setLineWrap(true);
	        JScrollPane scrolledText = new JScrollPane(theText);
	        scrolledText.setHorizontalScrollBarPolicy(
	                    JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
	        scrolledText.setVerticalScrollBarPolicy(
	                    JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
	        textPanel.add(scrolledText,BorderLayout.CENTER);
	       // textPanel.add(theText);
	        //contentPane.add(textPanel, BorderLayout.CENTER);
	        //leftBox.add(textPanel);
	        
	        JPanel inputPanel = new JPanel();
	        inputPanel.setLayout(new BorderLayout( ));
	        inputPanel.setBackground(Color.BLUE);
	        
	        inputText = new JTextArea(CHAR_LINE, CHAR_PER_LINE);
	        inputText.setText(" ");
	        inputText.setBackground(Color.WHITE);
	        
	       // JMenu inputMenu = new JMenu("文件");
	        //JMenuItem in;
	       // JMenuBar inBar = new JMenuBar();
	       // inBar.add(inputMenu);
	        //inputPanel.add(inBar, BorderLayout.NORTH);
	        JToolBar tool=new JToolBar();
	        ImageIcon my =new ImageIcon("title.gif");
			JButton open=new JButton(my);
			 my=new ImageIcon("hi.gif");
			JButton mail=new JButton(my);
			tool.add(open);
			tool.add(mail);
			inputPanel.add("North",tool);
			
	        
	        inputText.setLineWrap(true);
	        JScrollPane InputText = new JScrollPane(inputText);
	        InputText.setHorizontalScrollBarPolicy(
	                    JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
	        InputText.setVerticalScrollBarPolicy(
	                    JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
	        inputPanel.add(InputText,BorderLayout.CENTER);
	        
	        leftBox.add(textPanel);
	        leftBox.add(inputPanel);
	        
	        contentPane.add(leftBox, BorderLayout.WEST);
	        
	        //涂鸦区
	       // JPanel buttonPanetwo = new JPanel( );
	        //buttonPanetwo.setBackground(Color.white);
	       // buttonPanetwo.setLayout(new FlowLayout( ));
	        Box centerBox = Box.createVerticalBox( );

	        Component centerStrut = Box.createVerticalStrut(VERTICAL_STRUT_SIZE); 
	        centerBox.add(centerStrut);
	        final  DrawPanel  draw=new DrawPanel();
	        JToolBar Tool=new JToolBar();
	        //JPanel caidan=new JPanel();
			JButton qianbi=new JButton("铅笔");
			qianbi.addActionListener(this);
			Tool.add(qianbi);
			JButton zhixian=new JButton("直线");
			zhixian.addActionListener(this);
			Tool.add(zhixian);
			JButton juxing=new JButton("矩形");
			juxing.addActionListener(this);
			Tool.add(juxing);
			JButton tuoyuan=new JButton("椭圆");
			tuoyuan.addActionListener(this);
			Tool.add(tuoyuan);
			JButton qingchu=new JButton("清除");
			qingchu.addActionListener(this);
			Tool.add(qingchu);
			//draw.add(caidan,BorderLayout.NORTH);
			centerBox.add(Tool);
			centerBox.add(draw);
	        contentPane.add(centerBox, BorderLayout.CENTER);
	        
	        
	        JPanel buttonPanethree = new JPanel( );
	        buttonPanethree.setBackground(Color.YELLOW);
	       // buttonPanethree.setLayout(new FlowLayout( ));
	        Box rightBox = Box.createVerticalBox( );
	        

	        Component rightStrut = Box.createVerticalStrut(VERTICAL_STRUT_SIZE); 
	        rightBox.add(rightStrut);
	        rightBox.add(buttonPanethree );
	        
	        JButton aButton = new JButton("笔触");
	        aButton.addActionListener(this);
	        rightBox.add(aButton);
	        JButton bButton = new JButton("颜色");
	        bButton.addActionListener(new ActionListener(){
				public void actionPerformed(ActionEvent e){
					Color board=JColorChooser.showDialog(draw, "自定义", draw.color);
					draw.color=board;
					draw.repaint();
				
				}
			});
	        rightBox.add(bButton);
	        JButton cButton = new JButton("图案");
	        cButton.addActionListener(this);
	        rightBox.add(cButton);
	        rightBox.add(buttonPanethree );
	        contentPane.add(rightBox, BorderLayout.EAST);
	}

	
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		command=e.getActionCommand();
		if (e.getActionCommand( ).equals("笔触")){
			pinting guiAdder = new pinting ( );
	        guiAdder.setVisible(true);	
		}
		
		
		String actionCommand = e.getActionCommand();
        if (actionCommand.equals("保存"))
            memo1 = theText.getText();
        else if (actionCommand.equals("新建"))
            memo2 = theText.getText();
        
        else if(command.equals("清除"))
		 {
			 repaint();
		 }
		
        //else if(command.equals("颜色选择"))
		// {
			// color=chose.showDialog(this, "颜色选择", color);
			
	//	 }
		 
        else if (actionCommand.equals("Clear"))
            theText.setText("");
        else if (actionCommand.equals("另存为"))
            theText.setText(memo1);
        else if (actionCommand.equals("Get Memo 2"))
            theText.setText(memo2);
        else if (actionCommand.equals("Exit"))
            System.exit(0);
        
	}
	
	
	
	
	private class pinting extends JFrame
    implements ActionListener{
		
		private pinting(){
		setTitle("笔触");
        addWindowListener(new WindowDestroyer( ));
        setSize(width , height);
		}

		public void actionPerformed(ActionEvent e) {
			// TODO Auto-generated method stub
			
		}
		
	}/*
	private class pictuer extends JFrame
    implements ActionListener{
		public String command="";
		private pictuer(){
		setTitle("图案");
        addWindowListener(new WindowDestroyer( ));
        setSize(width , height);
        
        
       Container contentPane=getContentPane(); 
        JPanel caidan=new JPanel();
		JButton qianbi=new JButton("铅笔");
		qianbi.addActionListener(this);
		caidan.add(qianbi);
		JButton zhixian=new JButton("直线");
		zhixian.addActionListener(this);
		caidan.add(zhixian);
		JButton juxing=new JButton("矩形");
		juxing.addActionListener(this);
		caidan.add(juxing);
		JButton tuoyuan=new JButton("椭圆");
		tuoyuan.addActionListener(this);
		caidan.add(tuoyuan);
		caidan.setLayout(new GridLayout(2,2));
		contentPane.add(caidan);
		
		}

		public void actionPerformed(ActionEvent e) {
			// TODO Auto-generated method stub
			
		}
		
	}
	*/
	public class DrawPanel extends JPanel implements MouseMotionListener,MouseListener 
	{   
		/**
		 * 
		 */
		   private Color color;
		private static final long serialVersionUID = 1L;
		public DrawPanel()
		{
			
		juxing =new ArrayList<Rectangle2D>();
		currentju=null;
		tuoyuan=new ArrayList<Ellipse2D>();
		currenttuo=null;
		zhixian=new ArrayList<Line2D>();
		currentzhi=null;
		qianbi=new ArrayList<Line2D>();
		currentqian=null;
		addMouseListener(this);
		addMouseMotionListener(this);
		
		}
		
		
		
		//当调用REPAINT的时候 系统会自动调用这个方法进行绘图
		//把所有需要画的工作都在这个里面完成 包括通过循环画出原来的 以及新画的
		public void paintComponent(Graphics g)
		{
			
			super.paintComponent(g);
			 if(!command.equals("清除"))
			{
				 Graphics2D g2=(Graphics2D)g;
				
			for(Rectangle2D r:juxing)
			{
				g2.draw(r);
			}
			
			if(currentju!=null)
			    {	 
				
			    g2.draw(currentju);
			     }
			
			for(Ellipse2D r:tuoyuan)
			{
				g2.draw(r);
				
			}
			if(currenttuo!=null)
			{
			g2.draw(currenttuo);}
			for(Line2D r:zhixian)
			{
				g2.draw(r);
			}
			if(currentzhi!=null)
			{
		    g2.draw(currentzhi);}
			for(Line2D r:qianbi)
			{
				g2.draw(r);
			}
			
			}
			 
			 else
			 {
				    juxing =new ArrayList<Rectangle2D>();
					currentju=null;
					tuoyuan=new ArrayList<Ellipse2D>();
					currenttuo=null;
					zhixian=new ArrayList<Line2D>();
					currentzhi=null;
					qianbi=new ArrayList<Line2D>();
					currentqian=null; 
			 }
		}
		
		
		//在MOUSEPRESSED里面做好图形 然后直接调用REPAINT 这样将直接把新画的图形和原有的图形一起画出来
		//否则 新画的图形将不能够与原有的图形共存 即出现闪烁的情况
		public void mousePressed(MouseEvent e)
		{
			
			px=e.getX();
			py=e.getY();
			
		}
		public void mouseDragged(MouseEvent e)
		{
			
		 if(command.equals("铅笔"))
			{ 
			    Graphics g3=getGraphics();
			    Graphics2D g2=(Graphics2D) g3;
			   
			    px2=e.getX();
				py2=e.getY();
				currentqian=new Line2D.Double(px,py,px2,py2);
				g2.draw(currentqian);
				px=px2;
				py=py2;
				qianbi.add(currentqian);
				repaint();
			}
		 else if (command.equals("直线"))
		    {  
			 
			px2=e.getX();
			py2=e.getY();
			currentzhi=new Line2D.Double(px,py,px2,py2);
			repaint();
		    }
		else if (command.equals("矩形"))
		    {
			px2=e.getX();
			py2=e.getY();
	        currentju=new Rectangle2D.Double();
	        currentju.setFrameFromDiagonal(px,py,px2,py2);
	        
	        repaint();
			
		    }
		else if (command.equals("椭圆"))
		    {
			px2=e.getX();
			py2=e.getY();
	        currenttuo=new Ellipse2D.Double();
	        currenttuo.setFrameFromDiagonal(px,py,px2,py2);
	       
	        repaint();
			
		    }
		
	
		}
	
	
	public  void mouseMoved(MouseEvent e)
	{}
	public void mouseClicked(MouseEvent arg0) 
	{}
	public void mouseEntered(MouseEvent arg0) 
	{}
	public void mouseExited(MouseEvent arg0)
	{}
	//下面的方法是定义当松开鼠标时 图形应该定型 应当加入数组中去 同时在程序中应该留着图形 所以要再画一次
	public void mouseReleased(MouseEvent e) 
	{ 
		g3=getGraphics();
		Graphics2D g2=(Graphics2D) g3;
		g2.setColor(color);
		if (command.equals("椭圆"))
		{
			tuoyuan.add(currenttuo);
			
	        g2.draw(currenttuo);
	        repaint();
		}
		else if (command.equals("矩形"))
		{
			   juxing.add(currentju);
			
		        g2.draw(currentju);
		        repaint();
		}
		
		else if (command.equals("直线"))
		{   
			 zhixian.add(currentzhi);
			
			 g2.draw(currentzhi);
			 
		}
	
	}
	
	}
	

}