Java Swing 编程实现曼彻斯特编码

「爱情、让人受尽委屈。」 2022-07-16 04:18 233阅读 0赞

[曼彻斯特详解请看][Link 1]  
博主只实现了标准版的曼彻斯特编码，本来想用图像输出的

主要思想是用监听获得输入框的内容，然后根据曼彻斯特编码输出到文本框中

import java.awt.BorderLayout;
    import java.awt.EventQueue;
    import java.awt.GridLayout;
    
    import java.lang.reflect.InvocationTargetException;
    
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JTextArea;
    import javax.swing.JTextField;
    import javax.swing.SwingConstants;
    import javax.swing.event.DocumentEvent;
    import javax.swing.event.DocumentListener;
    import javax.swing.text.BadLocationException;
    
    public class Manchester extends JFrame { 
        public static int TEXT_ROWS = 8;
        public static int TEXT_COLUMS = 20;
        final JTextArea textarea = new JTextArea(TEXT_ROWS, TEXT_COLUMS);
        private String str=null;
    
        public Manchester() {
            final JTextField textfield = new JTextField();
            textfield.getDocument().addDocumentListener(new textfielsLisener());
    
            JPanel northjpanel = new JPanel();
            northjpanel.setLayout(new GridLayout(1, 2));
            northjpanel.add(new JLabel("Manchester Code:", SwingConstants.RIGHT));
            northjpanel.add(textfield);
            add(northjpanel, BorderLayout.NORTH);
    
            JScrollPane scrollpane = new JScrollPane(textarea);
            add(scrollpane, BorderLayout.CENTER);
    
            pack();
    
        }
    
        //监听输入框的变化
        public class textfielsLisener implements DocumentListener { 
            @Override
            public void removeUpdate(DocumentEvent e) {
            }
    
            @Override
            public void insertUpdate(DocumentEvent e) {
                try {
                    //添加空格字符串 
                    str = " "+e.getDocument().getText(
                            e.getDocument().getStartPosition().getOffset(),
                            e.getDocument().getLength());
                } catch (BadLocationException e1) {
    
                    e1.printStackTrace();
                }
                for (int i = 0; i < str.length() ; i++) {
                    //判断第一个
                    if(i==1&&str.charAt(1) == '1'){
                        textarea.setText("");
                        textarea.append("￣|_");
    
                    }else if(i==1&&str.charAt(1) == '0'){
                        textarea.setText("error");
                        textarea.append("_|￣");
                    }
                    //判断前面的数字进行不同的输出
                    else if (str.charAt(i) == '1'&&str.charAt(i-1) == '0') {
                        textarea.append("￣|_");
                    }
                    else if(str.charAt(i) == '0'&&str.charAt(i-1) == '1'){
                        textarea.append("_|￣");
    
                    }
                    else if(str.charAt(i) == '1'&&str.charAt(i-1) == '1') {
                        textarea.append("|￣|_");
                    }
                    else if(str.charAt(i) == '0'&&str.charAt(i-1) == '0') {
    
                        textarea.append("|_|￣");
                    }
                    else{
                        textarea.setText("error");
                    }
                }
            }
    
            @Override
            public void changedUpdate(DocumentEvent e) {
            }
    
        }
    
        public static void main(String[] args) throws InvocationTargetException,
                InterruptedException {
            EventQueue.invokeAndWait(new Runnable() {
                @Override
                public void run() {
                    Manchester manchester = new Manchester();
                    manchester.setSize(600,300);
                    manchester.setVisible(true);
                }
            });
    
        }
    
    }

[Link 1]: https://www.ezloo.com/2008/05/manchester_encoding.html