Java 编程的vnc

package onlyfun.caterpillar.netapp; import onlyfun.caterpillar.simplenet.capturescreen.SimpleRemoteScreenCaptureClient; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class RemoteScreenCaptureClientUI extends JFrame { private ImageIcon logobIcon, logosIcon, screenIcon; private JLabel showScreenLabel; private Panel serverInfoPanel; private TextField serverAddr, serverPort; private JMenuItem menuConnect, menuDisConnect; private JRadioButtonMenuItem itemLowQuality, itemMediumQuality, itemHighQuality; private JRadioButtonMenuItem itemLowRefresh, itemMediumRefresh, itemHighRefresh; private SimpleRemoteScreenCaptureClient remoteScreenClient; private int quality = 5; private int refresh = 1000; public RemoteScreenCaptureClientUI() { super("Remote Screen Capture Client"); setUpUIComponent(); setUpEventListener(); setVisible(true); } private void setUpUIComponent() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JMenuBar menuBar = new JMenuBar(); JMenu functionMenu = new JMenu("Run"); menuConnect = new JMenuItem("Connect"); menuDisConnect = new JMenuItem("Disconnect"); menuDisConnect.setEnabled(false); functionMenu.add(menuConnect); functionMenu.add(menuDisConnect); menuBar.add(functionMenu); ButtonGroup qualityGroup = new ButtonGroup(); itemLowQuality = new JRadioButtonMenuItem("Low quality"); itemMediumQuality = new JRadioButtonMenuItem("Medium quality"); itemHighQuality = new JRadioButtonMenuItem("High quality"); itemMediumQuality.setSelected(true); qualityGroup.add(itemLowQuality); qualityGroup.add(itemMediumQuality); qualityGroup.add(itemHighQuality); JMenu qualityMenu = new JMenu("Quality"); qualityMenu.add(itemLowQuality); qualityMenu.add(itemMediumQuality); qualityMenu.add(itemHighQuality); menuBar.add(qualityMenu); ButtonGroup refreshGroup = new ButtonGroup(); itemLowRefresh = new JRadioButtonMenuItem("Low refresh"); itemMediumRefresh = new JRadioButtonMenuItem("Medium refresh"); itemHighRefresh = new JRadioButtonMenuItem("High refresh"); itemMediumRefresh.setSelected(true); refreshGroup.add(itemLowRefresh); refreshGroup.add(itemMediumRefresh); refreshGroup.add(itemHighRefresh); JMenu refreshMenu = new JMenu("Refresh"); refreshMenu.add(itemLowRefresh); refreshMenu.add(itemMediumRefresh); refreshMenu.add(itemHighRefresh); menuBar.add(refreshMenu); setJMenuBar(menuBar); logobIcon = new ImageIcon(RemoteScreenCaptureClientUI.class.getResource("logob.jpg")); logosIcon = new ImageIcon(RemoteScreenCaptureClientUI.class.getResource("logos.gif")); screenIcon = new ImageIcon(logobIcon.getImage()); showScreenLabel = new JLabel(screenIcon, SwingConstants.CENTER); JScrollPane scrollPane = new JScrollPane(showScreenLabel, ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED); getContentPane().add(scrollPane); serverInfoPanel = new Panel(); serverAddr = new TextField(10); serverPort = new TextField(10); serverInfoPanel.add(new JLabel("address ")); serverInfoPanel.add(serverAddr); serverInfoPanel.add(new JLabel("port ")); serverInfoPanel.add(serverPort); setSize(screenIcon.getImage().getWidth(this) + 100, screenIcon.getImage().getHeight(this) + 100); } private void setUpEventListener() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); menuConnect.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { JOptionPane.showOptionDialog(null, serverInfoPanel, "Server Info.", JOptionPane.DEFAULT_OPTION, JOptionPane.QUESTION_MESSAGE, logosIcon, null, null); remoteScreenClient = new SimpleRemoteScreenCaptureClient(); remoteScreenClient.setImageQuality(quality); menuConnect.setEnabled(false); menuDisConnect.setEnabled(true); Thread thread = new Thread(new Runnable() { public void run() { String message = null; try { remoteScreenClient.connectionToServer(serverAddr.getText(), Integer.parseInt(serverPort.getText())); Image image = remoteScreenClient.getImageFromServer(); setSize(image.getWidth(null), image.getWidth(null)); while((image = remoteScreenClient.getImageFromServer()) != null) { screenIcon.setImage(image); repaint(); Thread.sleep(refresh); } } catch(Exception ex) { message = ex.getMessage(); } finally { JOptionPane.showMessageDialog(null, message, "info", JOptionPane.INFORMATION_MESSAGE); menuConnect.setEnabled(true); menuDisConnect.setEnabled(false); } } }); thread.start(); } } ); menuDisConnect.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { remoteScreenClient.closeConnection(); menuConnect.setEnabled(true); menuDisConnect.setEnabled(false); screenIcon.setImage(logobIcon.getImage()); setSize(screenIcon.getImage().getWidth(null) + 100, screenIcon.getImage().getHeight(null) + 100); setVisible(false); setVisible(true); } } ); ItemListener qualityItemListener = new ItemListener() { public void itemStateChanged(ItemEvent e) { if(itemLowQuality.isSelected()) { quality = 1; if(remoteScreenClient != null) { remoteScreenClient.setImageQuality(1); } } else if(itemMediumQuality.isSelected()) { quality = 5; if(remoteScreenClient != null) { remoteScreenClient.setImageQuality(5); } } else if(itemHighQuality.isSelected()) { quality = 9; if(remoteScreenClient != null) { remoteScreenClient.setImageQuality(9); } } }