TipDialog.java
package com.wolf_pan; import java.util.Timer; import java.util.TimerTask; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; public class TipDialog extends JDialog { public TipDialog(JFrame owner, String tip, int width, int height) { super.setUndecorated(true); super.setSize(width, height); super.setLocationRelativeTo(owner); super.add(new JLabel("<html><font color="red">" + tip + "</font></html>", JLabel.CENTER)); } public void show(long duration) { setVisible(true); new Timer().schedule(new TimerTask() { @Override public void run() { dispose(); } }, duration); } }
PicFileChooser.java
package com.wolf_pan; import javax.swing.JFileChooser; import javax.swing.filechooser.FileNameExtensionFilter; public class PicFileChooser extends JFileChooser { public PicFileChooser() { FileNameExtensionFilter filter1 = new FileNameExtensionFilter("ICO (*.ico)", "ico"); FileNameExtensionFilter filter2 = new FileNameExtensionFilter("PNG (*.png)", "png"); FileNameExtensionFilter filter3 = new FileNameExtensionFilter("TIFF (*.tif;*.tiff)", "tif", "tiff"); FileNameExtensionFilter filter4 = new FileNameExtensionFilter("GIF (*.gif)", "gif"); FileNameExtensionFilter filter5 = new FileNameExtensionFilter("JPEG (*.jpg;*.jpeg;*.jpe;*.jfif)", "jpg", "jpeg", "jpe", "jfif"); FileNameExtensionFilter filter6 = new FileNameExtensionFilter("Bitmap Files (*.bmp)", "bmp", "dib"); FileNameExtensionFilter filter7 = new FileNameExtensionFilter("All Picture Files", "ico", "png", "tif", "tiff", "gif", "jpg", "jpeg", "jpe", "jfif", "bmp", "dib"); super.setFileFilter(filter1); super.setFileFilter(filter2); super.setFileFilter(filter3); super.setFileFilter(filter4); super.setFileFilter(filter5); super.setFileFilter(filter6); super.setFileFilter(filter7); super.setAcceptAllFileFilterUsed(false); } }
MainFrame.java
package com.wolf_pan; import com.google.zxing.BarcodeFormat; import com.google.zxing.BinaryBitmap; import com.google.zxing.ChecksumException; import com.google.zxing.EncodeHintType; import com.google.zxing.FormatException; import com.google.zxing.NotFoundException; import com.google.zxing.WriterException; import com.google.zxing.common.BitMatrix; import com.google.zxing.common.HybridBinarizer; import com.google.zxing.qrcode.QRCodeReader; import com.google.zxing.qrcode.QRCodeWriter; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Desktop; import java.awt.FlowLayout; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.net.URI; import java.util.HashMap; import java.util.logging.Level; import java.util.logging.Logger; import javax.imageio.ImageIO; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JMenuItem; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JPopupMenu; import javax.swing.JScrollPane; import javax.swing.JTabbedPane; import javax.swing.JTextArea; import javax.swing.event.ChangeEvent; import javax.swing.filechooser.FileNameExtensionFilter; public class MainFrame extends JFrame { private JTabbedPane tabbedPane; private HintTextArea textToEncodeHintTextArea; private JTextArea decodedResultTextArea; private JLabel encodedImageLabel, qrcodeToDecodeLabel, tipLabel; private JButton encodeButton, chooseButton, decodeButton, contactAuthorButton; private JPopupMenu popupMenu; private JMenuItem copyMenuItem, saveMenuItem; private BufferedImage qrcodeBufferedImage; private String qrcodePicFilename; private static final Logger LOGGER = Logger.getLogger(MainFrame.class.getName()); private MainFrame() { super("QRCoder"); initializeComponents(); initializeEventListeners(); } private void initializeComponents() { setSize(400, 600); setLocationRelativeTo(null); setDefaultCloseOperation(EXIT_ON_CLOSE); tabbedPane = new JTabbedPane(); JPanel encodePanel = new JPanel(new BorderLayout()), decodePanel = new JPanel(new BorderLayout()), authorPanel = new JPanel(new BorderLayout()); textToEncodeHintTextArea = new HintTextArea("Type text you want to encode here", 4); encodePanel.add(new JScrollPane(textToEncodeHintTextArea), BorderLayout.NORTH); encodedImageLabel = new JLabel(); encodedImageLabel.setHorizontalAlignment(JLabel.CENTER); encodePanel.add(encodedImageLabel); JPanel southEncodePanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 10, 0)); tipLabel = new JLabel("<html><font color="blue" size="8">Tip</font></html>"); southEncodePanel.add(tipLabel); encodeButton = new JButton("Encode"); southEncodePanel.add(encodeButton); encodePanel.add(southEncodePanel, BorderLayout.SOUTH); tabbedPane.add("Encode", encodePanel); JPanel northPanel = new JPanel(new BorderLayout()); JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT)); chooseButton = new JButton("Choose..."); buttonPanel.add(chooseButton); decodeButton = new JButton("Decode"); buttonPanel.add(decodeButton); northPanel.add(buttonPanel, BorderLayout.NORTH); decodedResultTextArea = new JTextArea(4, 0); decodedResultTextArea.setLineWrap(true); decodedResultTextArea.setEditable(false); JPanel decodedResultPanel = new JPanel(new BorderLayout()); JLabel decodedResultLabel = new JLabel("<html><font size="5">Decoded result:</font></html>"); decodedResultPanel.add(decodedResultLabel, BorderLayout.NORTH); decodedResultPanel.add(new JScrollPane(decodedResultTextArea)); northPanel.add(decodedResultPanel); decodePanel.add(northPanel, BorderLayout.NORTH); qrcodeToDecodeLabel = new JLabel(new ImageIcon(MainFrame.class.getResource("/images/author.jpg"))); decodePanel.add(qrcodeToDecodeLabel); tabbedPane.add("Decode", decodePanel); JLabel authorLabel = new JLabel("<html><br /><font size="20">作者：布伊什<br />QQ: 980639902</font></html>", JLabel.CENTER); authorPanel.add(authorLabel, BorderLayout.NORTH); JLabel authorQRCodeLabel = new JLabel(new ImageIcon(MainFrame.class.getResource("/images/author.jpg"))); authorPanel.add(authorQRCodeLabel); contactAuthorButton = new JButton("联系作者"); JPanel contactAuthorButtonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT)); contactAuthorButtonPanel.add(contactAuthorButton); authorPanel.add(contactAuthorButtonPanel, BorderLayout.SOUTH); tabbedPane.add("Author", authorPanel); add(tabbedPane); popupMenu = new JPopupMenu(); copyMenuItem = new JMenuItem("Copy"); popupMenu.add(copyMenuItem); saveMenuItem = new JMenuItem("Save"); popupMenu.add(saveMenuItem); } private void initializeEventListeners() { tabbedPane.addChangeListener((ChangeEvent ev) -> { if (tabbedPane.getSelectedIndex() == 0) { encodeButton.requestFocus(); } }); encodeButton.addActionListener((ActionEvent ev) -> { onEncodeButtonClicked(); }); chooseButton.addActionListener((ActionEvent ev) -> { onChooseButtonClicked(); }); decodeButton.addActionListener((ActionEvent ev) -> { onDecodeButtonClicked(); }); contactAuthorButton.addActionListener((ActionEvent ev) -> { onContactAuthorButtonClicked(); }); encodedImageLabel.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent ev) { onEncodedImageLabelClicked(ev); } }); tipLabel.addMouseListener(new MouseAdapter() { private TipDialog tipDialog; @Override public void mouseEntered(MouseEvent ev) { tipDialog = new TipDialog(MainFrame.this, "右键单击生成的二维码弹出工具菜单", 220, 30); tipDialog.setVisible(true); } @Override public void mouseExited(MouseEvent ev) { tipDialog.dispose(); } }); copyMenuItem.addActionListener((ActionEvent ev) -> { onCopyMenuItemClicked(); }); saveMenuItem.addActionListener((ActionEvent ev) -> { onSaveMenuItemClicked(); }); } private void onEncodeButtonClicked() { try { String contents = textToEncodeHintTextArea.getText(); int width = encodedImageLabel.getWidth() - 20; int height = encodedImageLabel.getHeight() - 20; HashMap<EncodeHintType, String> hints = new HashMap<>(); hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); BitMatrix bitMatrix = new QRCodeWriter().encode(contents, BarcodeFormat.QR_CODE, width, height, hints); qrcodeBufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); for (int y = 0; y < height; ++y) { for (int x = 0; x < width; ++x) { Color color = bitMatrix.get(x, y) ? Color.BLACK : Color.WHITE; qrcodeBufferedImage.setRGB(x, y, color.getRGB()); } } encodedImageLabel.setIcon(new ImageIcon(qrcodeBufferedImage)); } catch (WriterException ex) { LOGGER.log(Level.SEVERE, null, ex); JOptionPane.showMessageDialog(this, ex.getMessage(), "Error", JOptionPane.ERROR_MESSAGE); } } private void onChooseButtonClicked() { PicFileChooser picFileChooser = new PicFileChooser(); if (picFileChooser.showOpenDialog(this) == PicFileChooser.APPROVE_OPTION) { qrcodePicFilename = picFileChooser.getSelectedFile().getAbsolutePath(); qrcodeToDecodeLabel.setIcon(new ImageIcon(qrcodePicFilename)); } } private void onDecodeButtonClicked() { try { BufferedImage qrcodeToDecodeBufferedImage; if (qrcodePicFilename == null) { qrcodeToDecodeBufferedImage = ImageIO.read(MainFrame.class.getResource("/images/author.jpg")); } else { qrcodeToDecodeBufferedImage = ImageIO.read(new File(qrcodePicFilename)); } BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(qrcodeToDecodeBufferedImage); String decodedText = new QRCodeReader().decode(new BinaryBitmap(new HybridBinarizer(source))).getText(); decodedResultTextArea.setText(decodedText); } catch (ChecksumException | FormatException | NotFoundException | IOException ex) { LOGGER.log(Level.SEVERE, null, ex); if (ex instanceof NotFoundException) { JOptionPane.showMessageDialog(this, "QR code not found", "Error", JOptionPane.ERROR_MESSAGE); } else { JOptionPane.showMessageDialog(this, "Cannot decode the QR code", "Unknown Error", JOptionPane.ERROR_MESSAGE); } } } private void onContactAuthorButtonClicked() { try { Desktop.getDesktop().browse(URI.create("tencent://message/?uin=980639902")); } catch (IOException ex) { LOGGER.log(Level.SEVERE, null, ex); } } private void onEncodedImageLabelClicked(MouseEvent ev) { if (ev.getButton() == MouseEvent.BUTTON3) { popupMenu.show(encodedImageLabel, ev.getX(), ev.getY()); } } private void onCopyMenuItemClicked() { if (qrcodeBufferedImage != null) { ImageSelection contents = new ImageSelection(qrcodeBufferedImage); Toolkit.getDefaultToolkit().getSystemClipboard().setContents(contents, null); TipDialog tipDialog = new TipDialog(this, "Copied to clipboard", 150, 30); tipDialog.show(1500); } } private void onSaveMenuItemClicked() { if (qrcodeBufferedImage != null) { JFileChooser fileChooser = new JFileChooser(); fileChooser.setFileFilter(new FileNameExtensionFilter("PNG (*.png)", "png")); fileChooser.setFileFilter(new FileNameExtensionFilter("Bitmap Files (*.bmp)", "bmp")); fileChooser.setAcceptAllFileFilterUsed(false); if (fileChooser.showSaveDialog(this) == PicFileChooser.APPROVE_OPTION) { try { String formatName; if (fileChooser.getFileFilter().getDescription().equals("PNG (*.png)")) { formatName = "png"; } else { formatName = "bmp"; } File destinationFile = new File(fileChooser.getSelectedFile() + "." + formatName); if (ImageIO.write(qrcodeBufferedImage, formatName, destinationFile)) { TipDialog tipDialog = new TipDialog(this, "Saved to disk", 150, 30); tipDialog.show(1500); } } catch (IOException ex) { LOGGER.log(Level.SEVERE, null, ex); } } } } public static void main(String[] args) { MainFrame mainFrame = new MainFrame(); mainFrame.setVisible(true); } }
ImageSelection.java
package com.wolf_pan; import java.awt.Image; import java.awt.datatransfer.DataFlavor; import java.awt.datatransfer.Transferable; import java.awt.datatransfer.UnsupportedFlavorException; public class ImageSelection implements Transferable { private final Image image; public ImageSelection(Image image) { this.image = image; } @Override public DataFlavor[] getTransferDataFlavors() { return new DataFlavor[]{DataFlavor.imageFlavor}; } @Override public boolean isDataFlavorSupported(DataFlavor flavor) { return flavor.equals(DataFlavor.imageFlavor); } @Override public Image getTransferData(DataFlavor flavor) throws UnsupportedFlavorException { if (!isDataFlavorSupported(flavor)) { throw new UnsupportedFlavorException(flavor); } return image; } }
HintTextArea.java
package com.wolf_pan; import java.awt.Color; import java.awt.event.FocusEvent; import java.awt.event.FocusListener; import javax.swing.JTextArea; public class HintTextArea extends JTextArea { public HintTextArea(String hint, int rows) { super(hint, rows, 0); super.setForeground(Color.GRAY); super.addFocusListener(new FocusListener() { @Override public void focusGained(FocusEvent e) { if (getForeground() == Color.GRAY && hint.equals(getText())) { setText(null); setForeground(Color.BLACK); } } @Override public void focusLost(FocusEvent e) { if (getText().equals("")) { setText(hint); setForeground(Color.GRAY); } } }); } }