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Update zxing to newest version and upgrade example to Java 8
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102 changes: 102 additions & 0 deletions
102
...re-examples/webcam-capture-qrcode/src/main/java/com/github/sarxos/example2/QrCapture.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| package com.github.sarxos.example2; | ||
| import java.awt.FlowLayout; | ||
| import java.awt.event.WindowAdapter; | ||
| import java.awt.event.WindowEvent; | ||
| import java.awt.image.BufferedImage; | ||
| import java.io.Closeable; | ||
| import java.util.concurrent.Exchanger; | ||
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| import javax.swing.JFrame; | ||
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| import com.github.sarxos.webcam.Webcam; | ||
| import com.github.sarxos.webcam.WebcamPanel; | ||
| import com.github.sarxos.webcam.WebcamResolution; | ||
| import com.google.zxing.BinaryBitmap; | ||
| import com.google.zxing.MultiFormatReader; | ||
| import com.google.zxing.NotFoundException; | ||
| import com.google.zxing.Result; | ||
| import com.google.zxing.client.j2se.BufferedImageLuminanceSource; | ||
| import com.google.zxing.common.HybridBinarizer; | ||
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| public class QrCapture extends JFrame implements Closeable { | ||
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| private static final long serialVersionUID = 1L; | ||
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| private Webcam webcam = null; | ||
| private BufferedImage image = null; | ||
| private Result result = null; | ||
| private Exchanger<String> exchanger = new Exchanger<String>(); | ||
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| public QrCapture() { | ||
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| super(); | ||
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| setLayout(new FlowLayout()); | ||
| setTitle("Capture"); | ||
| setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); | ||
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| addWindowListener(new WindowAdapter() { | ||
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| @Override | ||
| public void windowClosing(WindowEvent e) { | ||
| close(); | ||
| } | ||
| }); | ||
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| webcam = Webcam.getDefault(); | ||
| webcam.setViewSize(WebcamResolution.QVGA.getSize()); | ||
| webcam.open(); | ||
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| add(new WebcamPanel(webcam)); | ||
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| pack(); | ||
| setVisible(true); | ||
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| final Thread daemon = new Thread(() -> { | ||
| while (isVisible()) { | ||
| read(); | ||
| } | ||
| }); | ||
| daemon.setDaemon(true); | ||
| daemon.start(); | ||
| } | ||
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| private static BinaryBitmap toBinaryBitmap(BufferedImage image) { | ||
| return new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image))); | ||
| } | ||
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| private void read() { | ||
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| if (!webcam.isOpen()) { | ||
| return; | ||
| } | ||
| if ((image = webcam.getImage()) == null) { | ||
| return; | ||
| } | ||
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| try { | ||
| result = new MultiFormatReader().decode(toBinaryBitmap(image)); | ||
| } catch (NotFoundException e) { | ||
| return; // fall thru, it means there is no QR code in image | ||
| } | ||
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| if (result != null) { | ||
| try { | ||
| exchanger.exchange(result.getText()); | ||
| } catch (InterruptedException e) { | ||
| return; | ||
| } finally { | ||
| dispose(); | ||
| } | ||
| } | ||
| } | ||
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| public String getResult() throws InterruptedException { | ||
| return exchanger.exchange(null); | ||
| } | ||
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| @Override | ||
| public void close() { | ||
| webcam.close(); | ||
| } | ||
| } |
45 changes: 45 additions & 0 deletions
45
.../webcam-capture-qrcode/src/main/java/com/github/sarxos/example2/WebcamQRCodeExample2.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| package com.github.sarxos.example2; | ||
| import java.awt.FlowLayout; | ||
| import java.awt.event.ActionEvent; | ||
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| import javax.swing.AbstractAction; | ||
| import javax.swing.JButton; | ||
| import javax.swing.JFrame; | ||
| import javax.swing.JOptionPane; | ||
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| public class WebcamQRCodeExample2 extends JFrame { | ||
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| public WebcamQRCodeExample2() { | ||
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| setTitle("Main frame"); | ||
| setLayout(new FlowLayout()); | ||
| setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); | ||
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| add(new JButton(new AbstractAction("CAPTURE QR") { | ||
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| @Override | ||
| public void actionPerformed(ActionEvent e) { | ||
| final Thread thread = new Thread(() -> { | ||
| try (QrCapture qr = new QrCapture()) { | ||
| showMessage("QR code text is:\n" + qr.getResult() + ""); | ||
| } catch (InterruptedException ex) { | ||
| ex.printStackTrace(); | ||
| } | ||
| }); | ||
| thread.setDaemon(true); | ||
| thread.start(); | ||
| } | ||
| })); | ||
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| pack(); | ||
| setVisible(true); | ||
| } | ||
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| private void showMessage(String text) { | ||
| JOptionPane.showMessageDialog(null, text); | ||
| } | ||
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| public static void main(String[] args) { | ||
| new WebcamQRCodeExample2(); | ||
| } | ||
| } |