基于Java的实例源码-实现的放大镜效果附有源文件.zip

import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import java.io.*; //Write By Fubin My MSN:yonghe169@163.com public class MagnifierWindow extends JFrame{ private Container container = getContentPane(); private JPopupMenu popupMenu = new JPopupMenu(); private JMenuItem menuRefresh = new JMenuItem("Refresh"); private JMenuItem menuHide = new JMenuItem("Hide"); private JMenu menuSize = new JMenu("Size"); private JMenuItem menu100Pixels = new JMenuItem("100 Pixels"); private JMenuItem menu200Pixels = new JMenuItem("200 Pixels"); private JMenu menuHelp = new JMenu("Help"); private JMenuItem menuHow = new JMenuItem("How to use"); private JMenuItem menuSite = new JMenuItem("Visit web site"); private JMenuItem menuAbout = new JMenuItem("About"); private JMenuItem menuExit = new JMenuItem("Exit"); private TimeUpdate timeUpdate = new TimeUpdate(); private int timeUpdateDelay = 10; private int onScreenMoveDidectionUp = 1; private int onScreenMoveDidectionDown = -1; private int onScreenMoveDidectionX = onScreenMoveDidectionUp; private int onScreenMoveDidectionY = onScreenMoveDidectionUp; private int setCoordinateX; private int setCoordinateY; private int absoluteCoordinateX; private int absoluteCoordinateY; private int relativeCoordinateXWhenMousePressed; private int relativeCoordinateYWhenMousePressed; private boolean mousePressedNow; private boolean magnifierStopped; private ConfigData configData = new ConfigData(); private int screenWidth = Toolkit.getDefaultToolkit().getScreenSize().width; private int screenHeight = Toolkit.getDefaultToolkit().getScreenSize().height; private int magnifierSize = 100; private MagnifierPanel magnifierPanel = new MagnifierPanel(magnifierSize); private Image magnifierIcon; private int updateScreenDelay = 500; public MagnifierWindow(String windowTitle){ super(windowTitle); magnifierIcon = new ImageIcon(MagnifierIcon.magnifierIcon).getImage(); setIconImage(magnifierIcon); setUndecorated(true); container.add(magnifierPanel); addMouseListener(new MouseFunctions()); addMouseMotionListener(new MouseMotionFunctions()); timeUpdate.start(); menuRefresh.addActionListener( new ActionListener(){ public void actionPerformed(ActionEvent e){ updateScreen(); } } ); menuHide.addActionListener( new ActionListener(){ public void actionPerformed(ActionEvent e){ setState(JFrame.ICONIFIED); } } ); menu100Pixels.addActionListener( new ActionListener(){ public void actionPerformed(ActionEvent e){ magnifierSize = 100; updateSize(magnifierSize); } } ); menu200Pixels.addActionListener( new ActionListener(){ public void actionPerformed(ActionEvent e){ magnifierSize = 200; updateSize(magnifierSize); } } ); menuHow.addActionListener( new ActionListener(){ public void actionPerformed(ActionEvent e){ JOptionPane jOptionPane = new JOptionPane(); JTextArea jTextArea = new JTextArea(); jTextArea.setText("1.Single click on left mouse button stops magnifier movement.\n" + "2.Double click on left mouse button starts magnifier movement.\n" + "3.Single click on right mouse button stops magnifier movement and shows menu.\n" + "4.Move magnifier by click on left mouse button on it and drag to desired place.\n" + "5.Refresh option in the menu is needed to update last screen status.\n" + "6.Hide option in the menu is needed to minimize magnifier"); jOptionPane.showMessageDialog(null, jTextArea, "How to use magnifier", JOptionPane.INFORMATION_MESSAGE); } } ); menuSite.addActionListener( new ActionListener(){ public void actionPerformed(ActionEvent e){ JOptionPane jOptionPane = new JOptionPane(); JTextField jTextField = new JTextField(); jTextField.setText("http://softcollection.sytes.net/javaprog"); jOptionPane.showMessageDialog(null, jTextField, "Please visit web site!", JOptionPane.INFORMATION_MESSAGE); } } ); menuAbout.addActionListener( new ActionListener(){ public void actionPerformed(ActionEvent e){ JOptionPane.showMessageDialog(null,"Magnifier v1.14","About",JOptionPane.INFORMATION_MESSAGE); } } ); menuExit.addActionListener( new ActionListener(){ public void actionPerformed(ActionEvent e){ System.exit(0); } } ); popupMenu.add(menuRefresh); popupMenu.add(menuHide); popupMenu.add(menuSize); menuSize.add(menu100Pixels); menuSize.add(menu200Pixels); popupMenu.add(menuHelp); menuHelp.add(menuHow); menuHelp.add(menuSite); menuHelp.add(menuAbout); popupMenu.add(menuExit); updateSize(magnifierSize); openFile(); show(); } public void updateSize(int magnifierSize){ magnifierPanel.setMagnifierSize(magnifierSize); setSize(magnifierSize,magnifierSize); validate(); } public void updateScreen(){ hide(); try{Thread.sleep(updateScreenDelay);} catch(InterruptedException e){} magnifierPanel.getScreen(); show(); } private class TimeUpdate extends Thread{ public void run(){ while(true){ if (magnifierStopped == false){ setCoordinateX += onScreenMoveDidectionX; setCoordinateY += onScreenMoveDidectionY; if (setCoordinateX < 0) onScreenMoveDidectionX = onScreenMoveDidectionUp; if (setCoordinateY < 0) onScreenMoveDidectionY = onScreenMoveDidectionUp; if (setCoordinateX > (screenWidth-magnifierSize)) onScreenMoveDidectionX = onScreenMoveDidectionDown; if (setCoordinateY > (screenHeight-magnifierSize)) onScreenMoveDidectionY = onScreenMoveDidectionDown; magnifierPanel.setMagnifierLocation(setCoordinateX,setCoordinateY); setLocation(setCoordinateX,setCoordinateY); } try{Thread.sleep(timeUpdateDelay);} catch(InterruptedException e){} } } } private class MouseFunctions extends MouseAdapter{ public void mousePressed(MouseEvent e){ if (e.getClickCount()==1){ mousePressedNow = true; relativeCoordinateXWhenMousePressed=e.getX(); relativeCoordinateYWhenMousePressed=e.getY(); magnifierStopped = true; } if (e.getButton()==MouseEvent.BUTTON1&&e.getClickCount()==2){ magnifierStopped = false; } } public void mouseReleased(MouseEvent e){ mousePressedNow = false; saveFile(); if (e.isPopupTrigger()){ popupMenu.show(e.getComponent(),e.getX(),e.getY()); } } } private class MouseMotionFunctions extends MouseMotionAdapter{ public void mouseDragged(MouseEvent e){ if (mousePressedNow == true){ absoluteCoordinateX = MagnifierWindow.this.getLocationOnScreen().x + e.getX(); absoluteCoordinateY = MagnifierWindow.this.getLocationOnScreen().y + e.getY(); setCoordinateX = absoluteCoordinateX-relativeCoordinateXWhenMousePressed; setCoordinateY = absoluteCoordinateY-relativeCoordinateYWhenMousePressed; magnifierPanel.setMagnifierLocation(setCoordinateX,setCoordinateY); setLocation(setCoordinateX,setCoordinateY); } } } public void saveFile(){ ObjectOutputStrea