CODEWITHSUNDEEP
javacssswing
Anatolii Vorobiov
Anatolii Vorobiov

Reputation: 179

Set background image in JEditorPane from local file

I am using JEditorPane to set background image on my JFrame. The reason why I use this component, is that I want to set small image and be able to repeat it according to size of the frame. Similar to CSS analogue of background-repeat. The problem which I have is, I am not able to load image from my local folder.

background.setContentType("text/html");
background.setText("<html><body style=\"background-image: url(http://hq-wallpapers.ru/wallpapers/8/hq-wallpapers_ru_abstraction3d_39318_1920x1200.jpg);\"></body></html>");
  this.setContentPane(background);

What I tried is to use: url(../image.jpg); but it doesn't work.

If can offer better way of doing this task, I will appreciate it. P.S.: And I am not allowed to use JFrameForm, because of requirements of my project.

Upvotes: 1

Views: 1144

Answers (1)

MadProgrammer
MadProgrammer

Reputation: 347314

../image.jpg isn't a valid URL, as the JEditorPane has no "code base" from which to access where the "reference" should be loaded from.

Instead, you could use a File to generate a URL (or if it's an embedded resource, Class#getResource), for example...

File background = new File("../image.jpg");
URL url = background.toURI().toURL();

ep.setContentType("text/html");
ep.setText("<html><body style='color: #ffffff; background-image: url(" + url.toString() + ");'>Boo</body></html>");

Example

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class Test {

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

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

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        public TestPane() {
            try {
                setLayout(new BorderLayout());
                JEditorPane ep = new JEditorPane();

                File background = new File("/Volumes/Disk02/Dropbox/MegaTokyo/Aqua/aria_fanart_by_imskeptical-d5xbvgz.jpg");
                URL url = background.toURI().toURL();

                ep.setContentType("text/html");
                ep.setText("<html><body style='color: #ffffff; background-image: url(" + url.toString() + ");'>Boo</body></html>");
                add(new JScrollPane(ep));
            } catch (MalformedURLException ex) {
                ex.printStackTrace();
            }
        }

        @Override
        public Dimension getPreferredSize() {
            return new Dimension(200, 200);
        }

    }

}

Now if URL url = background.toURI().toURL(); doesn't work, you might need to use URL url = background.getCanonicalFile().toURI().toURL(); instead

Upvotes: 2

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