java swing做的画图程序

/* * ScreenSavers.java * * Created on 2007年11月3日, 下午8:21 */ import java.awt.AWTException; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.Rectangle; import java.awt.Robot; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.awt.image.BufferedImage; import java.io.File; import javax.imageio.ImageIO; import javax.swing.*; import javax.swing.DefaultComboBoxModel; import javax.swing.GroupLayout; import javax.swing.JComboBox; import javax.swing.JComponent; import javax.swing.JLabel; import javax.swing.LayoutStyle; import javax.swing.filechooser.FileNameExtensionFilter; /** * * @author xuqidong */ public class ScreenSavers extends javax.swing.JFrame { /** * */ private static final long serialVersionUID = 1L; // 变量声明 - 不进行修改 private JComboBox comboBox; private javax.swing.JToggleButton ellipseButton;//按钮圆 private javax.swing.JButton jButton10; private javax.swing.JButton jButton11; private javax.swing.JButton saveButton;//保存按钮 private javax.swing.JButton jButton2; private javax.swing.JButton jButton3; private javax.swing.JButton jButton4; private javax.swing.JButton colorChooserButton;//颜色选择按钮 private javax.swing.JButton clearButton;//清除按扭 private javax.swing.JButton backButton;//返回按钮 private ImageBoard imageBoard; private JCheckBox checkBox = new JCheckBox("填充颜色"); // 变量声明结束 BufferedImage image; /** Creates new form ScreenSavers */ public ScreenSavers() { super("画板"); setBounds(new Rectangle(100, 50, 578, 350)); initComponents(); imageBoard.setType(""); this.setLocationRelativeTo(null); this.setVisible(true); this.setAlwaysOnTop(true); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); checkBox.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e) { imageBoard.setFull(checkBox.isSelected()); } }); comboBox = new JComboBox(); comboBox.addItemListener(new ItemListener() { public void itemStateChanged(final ItemEvent arg0) { imageBoard.setBasicStroke(Integer.parseInt(arg0.getItem().toString())); } }); comboBox.setModel(new DefaultComboBoxModel(new String[] {"1", "3", "5", "7", "9", "11"})); JLabel label; label = new JLabel(); label.setText("设置线条粗细"); final GroupLayout groupLayout = new GroupLayout((JComponent) getContentPane()); groupLayout.setHorizontalGroup( groupLayout.createParallelGroup(GroupLayout.Alignment.LEADING) .addGroup(groupLayout.createSequentialGroup() .addGroup(groupLayout.createParallelGroup(GroupLayout.Alignment.LEADING) .addGroup(GroupLayout.Alignment.TRAILING, groupLayout.createSequentialGroup() .addGap(12, 12, 12) .addGroup(groupLayout.createParallelGroup(GroupLayout.Alignment.LEADING) .addComponent(ellipseButton, GroupLayout.DEFAULT_SIZE, 86, Short.MAX_VALUE) .addComponent(jButton2, GroupLayout.DEFAULT_SIZE, 86, Short.MAX_VALUE) .addComponent(jButton3, GroupLayout.DEFAULT_SIZE, 86, Short.MAX_VALUE) .addComponent(jButton4, GroupLayout.DEFAULT_SIZE, 86, Short.MAX_VALUE) .addComponent(colorChooserButton, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(checkBox, GroupLayout.PREFERRED_SIZE, 86, Short.MAX_VALUE))) .addGroup(GroupLayout.Alignment.TRAILING, groupLayout.createSequentialGroup() .addContainerGap() .addComponent(comboBox, 0, 86, Short.MAX_VALUE)) .addGroup(groupLayout.createSequentialGroup() .addContainerGap() .addComponent(label, GroupLayout.PREFERRED_SIZE, 80, GroupLayout.PREFERRED_SIZE))) .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED) .addComponent(imageBoard, GroupLayout.PREFERRED_SIZE, 354, GroupLayout.PREFERRED_SIZE) .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED) .addGroup(groupLayout.createParallelGroup(GroupLayout.Alignment.LEADING) .addComponent(clearButton, GroupLayout.DEFAULT_SIZE, 94, Short.MAX_VALUE) .addComponent(saveButton, GroupLayout.DEFAULT_SIZE, 94, Short.MAX_VALUE) .addComponent(jButton11, GroupLayout.DEFAULT_SIZE, 94, Short.MAX_VALUE) .addComponent(jButton10, GroupLayout.DEFAULT_SIZE, 94, Short.MAX_VALUE) .addComponent(backButton, GroupLayout.DEFAULT_SIZE, 94, Short.MAX_VALUE)) .addContainerGap()) ); groupLayout.setVerticalGroup( groupLayout.createParallelGroup(GroupLayout.Alignment.LEADING) .addGroup(groupLayout.createSequentialGroup() .addGap(17, 17, 17) .addGroup(groupLayout.createParallelGroup(GroupLayout.Alignment.LEADING) .addGroup(groupLayout.createSequentialGroup() .addComponent(jButton10) .addGap(17, 17, 17) .addComponent(jButton11) .addGap(25, 25, 25) .addComponent(saveButton) .addGap(60, 60, 60) .addComponent(backButton, GroupLayout.PREFERRED_SIZE, 23, GroupLayout.PREFERRED_SIZE) .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED) .addComponent(clearButton)) .addGroup(groupLayout.createParallelGroup(GroupLayout.Alignment.TRAILING, false) .addGroup(groupLayout.createSequentialGroup() .addComponent(ellipseButton, GroupLayout.PREFERRED_SIZE, 23, GroupLayout.PREFERRED_SIZE) .addGap(14, 14, 14) .addComponent(jButton2, GroupLayout.PREFERRED_SIZE, 31, GroupLayout.PREFERRED_SIZE) .addGap(6, 6, 6) .addComponent(jButton3, GroupLayout.PREFERRED_SIZE, 23, GroupLayout.PREFERRED_SIZE) .addGap(6, 6, 6) .addComponent(jButton4) .addGap(14, 14, 14) .addComponent(colorChooserButton) .addGap(10, 10, 10) .addComponent(checkBox) .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(label, GroupLayout.PREFERRED_SIZE, 18, GroupLayout.PREFERRED_SIZE) .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED) .addComponent(comboBox, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)) .addComponent(imageBoard, GroupLayout.Alignment.LEADING, GroupLayout.PREFERRED_SIZE, 276, GroupLayout.PREFERRED_SIZE))) .addGap(81, 81, 81)) ); getContentPane().setLayout(groupLayout); pack(); } private void initComponents() { imageBoard = new ImageBoard(); ellipseButton = new javax.swing.JToggleButton(); jButton3 = new javax.swing.JButton(); jButton4 = new javax.swing.JButton(); jButton2 = new javax.swing.JButton(); jButton10 = new javax.swing.JButton(); saveButton = new javax.swing.JButton(); jButton11 = new javax.swing.JButton(); colorChooserButton = new javax.swing.JButton(); clearButton = new javax.swing.JButton(); backButton = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); imageBoard.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0))); BorderLayout jPanel1Layout = new BorderLayout(); imageBoard.setLayout(jPanel1Layout); ellipseButton.setText("\u5706"); ellipseButton.addActionListener(new java.awt.event