Resizing JLabel ImageIcon with HTML

Question

So I looked through this thread and saw the suggestion of using HTML for resizing.

I've been going through the Oracle website but it only provided example for text customization in JLabels using HTML. Can I get an example of a JLabel with HTML parameters?

Do you mean something like `label.setText("");`? – MadProgrammer Aug 21 '13 at 07:55 — MadProgrammer, Aug 21 '13 at 07:55

score 4 · Accepted Answer · edited May 23 '17 at 10:30

This basically requires you to have a URL reference to the image in question. This is quite easy to achieve if the image is an embedded resource (as demonstrated below), but you should be able to generate a URL from file using File#getURI#toURL

enter image description here

import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.net.URL;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class HTMLLabel {

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

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

                URL url = getClass().getResource("/Chicken.png");
                System.out.println(url);

                JLabel perLabel = new JLabel("<html><img width=125 height=125 src=" + url + "></html>");
                JLabel orgLabel = new JLabel("<html><img src=" + url + "></html>");

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new GridBagLayout());

                GridBagConstraints gbc = new GridBagConstraints();
                gbc.gridwidth = GridBagConstraints.REMAINDER;

                frame.add(orgLabel, gbc);
                frame.add(perLabel, gbc);
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

}

It should be noted that scaling is pretty redumentry. I would, personally, avoid it and simple devise some kind of ImagePane that had better scaling capabilities, for example

Thank you for the complete example. Would your recommendation work on animated transparent gifs also? — kir, Aug 21 '13 at 08:16
You could try having a look at something like [Gif4J](http://www.gif4j.com/java-gif4j-pro-gif-image-transform.htm), I've not used it personally... — MadProgrammer, Aug 21 '13 at 08:19
Interesting. Thank you for all the suggestions. MadProgrammer strikes again! — kir, Aug 21 '13 at 08:21
Let me know how you go with that library, if it's any good or not ;) — MadProgrammer, Aug 21 '13 at 08:23

Resizing JLabel ImageIcon with HTML

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