CODEWITHSUNDEEP
javaswing
Ashot
Ashot

Reputation: 1300

Adding a mouse listener to image or image Icon in java

How can I to add mouse listener to image or imageIcon in Java?

Here is my code. I want to do anything with imageIcon after mouse click on it.

public class Bubbles extends JPanel {
    
    public static final int LINE_OUT = 440;
    int x = 20;
    int y = 50;
    int v = 4;
    
    Image img = new ImageIcon("res/lop.png").getImage();
    BackSide back;
    

    public Bubbles(int x, int y, int v, BackSide back) {
        this.x = x;
        this.y = y;
        this.v = v;
        this.back = back;
        setFocusable(true);
        
    }
    
 
    public void move() {
        if (y >= 440) {
            y = 0;
        } else {
            y += v;
        }
    }

}

Upvotes: 1

Views: 18528

Answers (3)

Tomas Bisciak
Tomas Bisciak

Reputation: 2841

If you dont want to use JLabel you can paint the image onto panel by overriding paintComponent method.Then you can add listener to your JPanel.I woud strongly recomend you to use JLabel but if you still preffer the other way,here you can see some example how to do it. How to set background image in Java?.

Icon icon = new ImageIcon("give path of the image");
JLabel lb = new JLabel(icon);
//now set listener for label.
lb.addMouseListener(new MouseAdapter() 
{
    @Override
    public void mouseClicked(MouseEvent e) 
    {
        //statement             
    }
});

Upvotes: 1

MadProgrammer
MadProgrammer

Reputation: 347204

The simplest solution would be to use a JLabel and set it's icon property. See How to use labels for more details.

If you must paint the image yourself (ie, you want to apply effects or perform animation across a container), then you need to add the MouseListener to the container which is rendering the image and test to see if the mouse event occurred within the context of the image based on it's location and size.

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
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.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class ImageMouseListener {

    public static void main(String[] args) {
        new ImageMouseListener();
    }

    public ImageMouseListener() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException ex) {
                } catch (InstantiationException ex) {
                } catch (IllegalAccessException ex) {
                } catch (UnsupportedLookAndFeelException ex) {
                }

                JFrame frame = new JFrame("Test");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(new ImagePane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class ImagePane extends JPanel {

        private BufferedImage img;
        private Point imgPoint;

        public ImagePane() {
            try {
                img = ImageIO.read(...);
                imgPoint = new Point(100, 100);
            } catch (IOException ex) {
                ex.printStackTrace();
            }

            addMouseListener(new MouseAdapter() {

                @Override
                public void mouseClicked(MouseEvent e) {
                    if (img != null && imgPoint != null) {
                        Point me = e.getPoint();
                        Rectangle bounds = new Rectangle(imgPoint, new Dimension(img.getWidth(), img.getHeight()));
                        if (bounds.contains(me)) {
                            System.out.println("I was clicked!");
                        }
                    }
                }

            });
        }

        @Override
        public Dimension getPreferredSize() {
            return new Dimension(400, 400);
        }

        @Override
        protected void paintComponent(Graphics g) {
            super.paintComponent(g);
            if (img != null && imgPoint != null) {
                g.drawImage(img, imgPoint.x, imgPoint.y, this);
            }
        }

    }

}

Take a look at Performing Custom Painting and How to use Mouse Listeners for more details

Upvotes: 1

An SO User
An SO User

Reputation: 24998

What you can do is that you can use a JLabel and set the ImageIcon to it. make the JLabel transparent by using setOpaque(false). Then, add listener to it and do whatever you want to do :)

Upvotes: 2

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