带有背景图像的自定义JTextArea

Posted 2021-02-25

This is a sample JTextArea with a custom background image.

import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
 
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
 
 
public class CustomTextArea extends JPanel {
 
	private static final long serialVersionUID = 7502204181430286959L;
	private static final Image image = new ImageIcon( "images/windows.jpg" ).getImage();
 
	public static void main(String[] args) {
		JFrame frame = new JFrame( "Hello" );
		frame.setDefaultCloseOperation(  JFrame.EXIT_ON_CLOSE );
		JPanel panel = new JPanel();
		panel.add( new CustomTextArea() );
		frame.setContentPane( panel );
		frame.pack();
		frame.setVisible( true );
	}
 
	public CustomTextArea() {
		super();
		init();
	}
 
	public Dimension getPreferredSize() {
		return new Dimension( image.getWidth( null ), image.getHeight( null ) );
	}
	public void init() {
		JTextArea ta = new JTextArea();
		Font f = new Font("Verdana", Font.BOLD, 36 );
		ta.setFont( f );
		ta.setLineWrap( true );
		ta.setWrapStyleWord( true );
		ta.setPreferredSize(getPreferredSize());
		ta.setOpaque( false );
		add( ta );
	}
 
	public void paintComponent( Graphics g ) {
		super.paintComponent( g );
		g.drawImage(image, 0, 0, null);
	}
}