vlcj - Fare Olaylarını İşleme

Vlcj'yi güncelleyeceğimiz uygulamayı daha da geliştirelim - Fare olaylarını işleme özelliğine sahip Video Olayı bölümü yüklenirken hata oluştu .

Fare Olaylarını Yönetme

Aşağıdaki sözdizimini kullanarak fare olay işleyicileri ekleyin (Şablon yöntemi) -

mediaPlayerComponent = new EmbeddedMediaPlayerComponent() {
   @Override
   public void mouseClicked(MouseEvent e) {
   }
   @Override
   public void mouseWheelMoved(MouseWheelEvent e) {
   }
};

Veya aşağıdaki sözdizimini kullanarak fare olay işleyicisi ekleyebiliriz (Dinleyici yöntemi) -

Component videoSurface = mediaPlayerComponent.videoSurfaceComponent();
videoSurface.addMouseListener(new MouseAdapter() {
   @Override
   public void mouseClicked(MouseEvent e) {
   }
});
videoSurface.addMouseWheelListener(new MouseWheelListener() {
   @Override
   public void mouseWheelMoved(MouseWheelEvent e) {
   }
});

Windows'ta Listener yöntemi olması durumunda, aşağıdaki sözdizimini kullanarak yerel fare girişi işlemeyi devre dışı bırakmamız gerekir.

mediaPlayerComponent.mediaPlayer().input().enableMouseInputHandling(false);

Bir video yüzeyinde fareyi kullandığımızda, fare olayı ortaya çıkacaktır.

Misal

Eclipse'de Ortam Kurulumu bölümünde oluşturulan proje mediaPlayer'ı açın .

Update App.java with following code−

App.java

package com.tutorialspoint.media;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseWheelEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import uk.co.caprica.vlcj.player.base.MediaPlayer;
import uk.co.caprica.vlcj.player.component.EmbeddedMediaPlayerComponent;

public class App extends JFrame {
   private static final long serialVersionUID = 1L;
   private static final String TITLE = "My First Media Player";
   private static final String VIDEO_PATH = "D:\\Downloads\\sunset-beach.mp4";
   private final EmbeddedMediaPlayerComponent mediaPlayerComponent;
   private JButton playButton;
   private JButton pauseButton;
   private JButton rewindButton;
   private JButton skipButton;

   public App(String title) {
      super(title);
      mediaPlayerComponent = new EmbeddedMediaPlayerComponent() {
         @Override
         public void mouseClicked(MouseEvent e) {
            super.mouseClicked(e);
            System.out.println("Mouse Clicked. (" + e.getX() + "," + e.getY() + ")");
         }
         @Override
         public void mouseWheelMoved(MouseWheelEvent e) {
            super.mouseWheelMoved(e);
            System.out.println("Mouse wheel moved. " + e.getScrollAmount());
         } 
         @Override
         public void playing(MediaPlayer mediaPlayer) {
            super.playing(mediaPlayer);
            System.out.println("Media Playback started.");
         }
         @Override
         public void finished(MediaPlayer mediaPlayer) {
            super.playing(mediaPlayer);
            System.out.println("Media Playback finished.");
         }
         @Override
         public void error(MediaPlayer mediaPlayer) {
            SwingUtilities.invokeLater(new Runnable() {        		
               public void run() {
                  System.out.println("Failed to load Media.");
               }        	       
            });
         }
      };		
   }
   public void initialize() {
      this.setBounds(100, 100, 600, 400);
      this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      this.addWindowListener(new WindowAdapter() {
         @Override
         public void windowClosing(WindowEvent e) {
            mediaPlayerComponent.release();
            System.exit(0);
         }
      });    	
      JPanel contentPane = new JPanel();
      contentPane.setLayout(new BorderLayout());   	 
      contentPane.add(mediaPlayerComponent, BorderLayout.CENTER);
      JPanel controlsPane = new JPanel();
      playButton = new JButton("Play");
      controlsPane.add(playButton);    
      pauseButton = new JButton("Pause");
      controlsPane.add(pauseButton);
      rewindButton = new JButton("Rewind");
      controlsPane.add(rewindButton);
      skipButton = new JButton("Skip");
      controlsPane.add(skipButton);
      contentPane.add(controlsPane, BorderLayout.SOUTH);

      playButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            mediaPlayerComponent.mediaPlayer().controls().play();
         }
      });  
      pauseButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            mediaPlayerComponent.mediaPlayer().controls().pause();
         }
      });
      rewindButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            mediaPlayerComponent.mediaPlayer().controls().skipTime(-14000);
         }
      });
      skipButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            mediaPlayerComponent.mediaPlayer().controls().skipTime(4000);
         }
      });
      this.setContentPane(contentPane);
      this.setVisible(true);
   }
   public void loadVideo(String path) {
      mediaPlayerComponent.mediaPlayer().media().startPaused(path);   	
   }
   public static void main( String[] args ){
      try {            
         UIManager.setLookAndFeel(
         UIManager.getSystemLookAndFeelClassName());
      } 
      catch (Exception e) {
         System.out.println(e);
      }
      App application = new App(TITLE);
      application.initialize(); 
      application.setVisible(true);  
      application.loadVideo(VIDEO_PATH);
   }
}

Run the application by right clicking the file and choose run as Java Application. After a successful startup, if everything is fine then it should display the following result −

Now click within the video and you will see a messages in console like follows−

Media Playback started.
Media Playback started.
Mouse Clicked. (377,180)
Mouse Clicked. (377,180)
Mouse Clicked. (356,120)
Media Playback finished.