Java实现小画板程序

package Painter; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.event.MouseMotionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.awt.font.FontRenderContext; import java.awt.font.TextLayout; import java.awt.geom.AffineTransform; import java.awt.geom.Arc2D; import java.awt.geom.CubicCurve2D; import java.awt.geom.Ellipse2D; import java.awt.geom.Line2D; import java.awt.geom.Rectangle2D; import java.awt.geom.RoundRectangle2D; import java.awt.image.BufferedImage; import java.awt.image.RenderedImage; import java.io.File; import java.io.IOException; import java.util.Random; import javax.imageio.ImageIO; import javax.print.DocFlavor.URL; import javax.swing.*; import javax.swing.border.BevelBorder; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; public class Painter extends JFrame implements ActionListener{ private boolean hasDraw=false; private Container c = getContentPane(); private String menuBar[]={"文件(F)","编辑(E)","视图(V)","说明(H)"}; private String menuItem[][]={ {"新建(N)|78","打开(O)|79","保存(S)|83","另存为(A)","退出(X)|69"}, {"撤消(U)|90","重复(R)|89","剪切(T)|88","复制(C)|67","粘贴(P)|86"}, {"工具栏(T)|84","色块(C)|75","状态栏(S)"}, {"关于(A)"} }; private JMenuItem jMenuItem[][]=new JMenuItem[4][5]; private JMenu jMenu[]; private JCheckBoxMenuItem jCheckBoxMenuItem[] = new JCheckBoxMenuItem[3]; private String ButtonName[]={"直线","矩形","椭圆","圆角矩形","贝氏曲线","扇型","多边形","铅笔","橡皮擦","文字","选取","喷绘"}; private JToggleButton jToggleButton[]; private ButtonGroup buttonGroup; private JPanel jPanel[]=new JPanel[5]; private JLabel jLabel[]=new JLabel[1];//状态列 private String toolname[]={"img/tool1.gif","img/tool2.gif","img/tool3.gif","img/tool4.gif","img/tool5.gif","img/tool8.gif","img/tool9.gif","img/tool7.gif","img/tool6.gif","img/tool10.gif","img/tool11.gif","img/tool12.gif"}; private Icon tool[]=new ImageIcon[12]; private int i,j,show_x,show_y,drawMethod=7; public int draw_panel_width=700; public int draw_panel_height=500; public Paint color_border; public Paint color_inside; private Setter setPanel; public PaintFiled drawPanel; private ResizeBlock resizeBlock; private ColorBox colorPanel; public Stroke stroke; private Shape shape; private String isFilled; private BufferedImage backGround; public Painter(){ //设定JMenuBar，并产生JMenuItem、设置快捷键 JMenuBar bar = new JMenuBar(); jMenu=new JMenu[menuBar.length]; for(i=0;i<menuBar.length;i++){ jMenu[i] = new JMenu(menuBar[i]); jMenu[i].setMnemonic(menuBar[i].split("\\(")[1].charAt(0)); bar.add(jMenu[i]); } for(i=0;i<menuItem.length;i++){ for(j=0;j<menuItem[i].length;j++){ if(i==0 && j==4 || i==1 && j==2) jMenu[i].addSeparator(); if(i!=2){ jMenuItem[i][j] = new JMenuItem(menuItem[i][j].split("\\|")[0]); if(menuItem[i][j].split("\\|").length!=1) jMenuItem[i][j].setAccelerator(KeyStroke.getKeyStroke(Integer.parseInt(menuItem[i][j].split("\\|")[1]), ActionEvent.CTRL_MASK) ); jMenuItem[i][j].addActionListener(this); jMenuItem[i][j].setMnemonic(menuItem[i][j].split("\\(")[1].charAt(0)); jMenu[i].add(jMenuItem[i][j]); } else{ jCheckBoxMenuItem[j] = new JCheckBoxMenuItem(menuItem[i][j].split("\\|")[0]); if(menuItem[i][j].split("\\|").length!=1) jCheckBoxMenuItem[j].setAccelerator(KeyStroke.getKeyStroke(Integer.parseInt(menuItem[i][j].split("\\|")[1]), ActionEvent.CTRL_MASK) ); jCheckBoxMenuItem[j].addActionListener(this); jCheckBoxMenuItem[j].setMnemonic(menuItem[i][j].split("\\(")[1].charAt(0)); jCheckBoxMenuItem[j].setSelected( true ); jMenu[i].add(jCheckBoxMenuItem[j]); } } } this.setJMenuBar(bar); this.addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent e) { confirm(); } }); try { backGround=ImageIO.read(this.getClass().getResource("img/board.jpg")); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } c.setLayout( new BorderLayout() ); jPanel[0]=new JPanel(){ public void paint(Graphics g) { Graphics2D g2d=(Graphics2D)g; Paint p=new TexturePaint(backGround,new Rectangle2D.Double(0,0,100,100)); g2d.setPaint(p); g2d.fill(this.getBounds()); // super.paint(g); } }; for(i=1;i<5;i++) jPanel[i]=new JPanel(); jLabel[0]=new JLabel(" 状态栏"); buttonGroup = new ButtonGroup(); JToolBar jToolBar=new JToolBar("工具箱",JToolBar.VERTICAL); jToggleButton=new JToggleButton[ButtonName.length]; for(i=0;i<ButtonName.length;i++){ //tool[i] = new ImageIcon(toolname[i]); java.net.URL url=this.getClass().getResource(toolname[i]); if(url==null)System.out.print(i); tool[i]=new ImageIcon(url); jToggleButton[i] = new JToggleButton(tool[i]); if(i==6) jToggleButton[i].setToolTipText("按Ctrl并单击完成最后一个操作"); jToggleButton[i].addActionListener( this ); jToggleButton[i].setFocusable( false ); buttonGroup.add(jToggleButton[i]); } jToolBar.add(jToggleButton[7]); jToolBar.add(jToggleButton[8]); jToolBar.add(jToggleButton[0]); jToolBar.add(jToggleButton[4]); jToolBar.add(jToggleButton[1]); jToolBar.add(jToggleButton[3]); jToolBar.add(jToggleButton[2]); jToolBar.add(jToggleButton[5]); jToolBar.add(jToggleButton[6]); jToolBar.add(jToggleButton[9]); jToolBar.add(jToggleButton[10]); jToolBar.add(jToggleButton[11]); jToggleButton[7].setSelected(true); jToolBar.setLayout( new GridLayout( 6,2, 2, 2 ) ); jPanel[2].add(jToolBar); jToolBar.setFloatable(false);//不可以动 colorPanel=new ColorBox(); colorPanel.painter=this; color_border=new Color(0,0,0); color_inside=null; jPanel[3].setLayout(new FlowLayout(FlowLayout.LEFT)); jPanel[3].add(colorPanel); drawPanel=new PaintFiled(); resizeBlock=new ResizeBlock(); //resizeBlock.setLayout(null); resizeBlock.add(drawPanel); drawPanel.setBounds(new Rectangle(2, 2, draw_panel_width, draw_panel_height)); final JTabbedPane tabbedPane = new JTabbedPane(); tabbedPane.addChangeListener(new ChangeListener(){ @Override public void stateChanged(ChangeEvent arg0) { // TODO Auto-generated method stub if(tabbedPane.getSelectedIndex()==1) { jPanel[2].setVisible(false); } else setPanel.setVisible(false); }}); setPanel=new Setter(); setPanel.painter=this; tabbedPane.addTab("设置",null, setPanel); tabbedPane.addTab("工具箱",null, jPanel[2]); jPanel[4].add(tabbedPane); //jPanel[4].add(setPane); jPanel[2].setPreferredSize(new Dimension(100,100)); jPanel[0].setLayout( new BorderLayout() ); jPanel[0].add(resizeBlock,BorderLayout.CENTER); //jPanel[0].add(jPanel[2],BorderLayout.WEST); jPanel[0].add(jPanel[3],BorderLayout.WEST); jPanel[0].add(jPanel[4],BorderLayout.EAST); jLabel[0].setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED)); resizeBlock.setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED)); resizeBlock.setBackground(new Color(128,128,128)); jPanel[3].setBorder(BorderFactory.createMatteBorder(1,0,0,0,new Color(172,168,153))); c.add(jPanel[0],BorderLayout.CENTER); c.add(jLabel[0],BorderLayout.SOUTH); stroke=new BasicStroke(5, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER); setSize(draw_panel_width,draw_panel_height); setTitle("画图板"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); show(); } public void save(){ FileDialog fileDialog = new F