摇摆-创建着色的透明前景，同时使背景项目不可单击

Question

So I'm creating a Java Application User Interface using Swing. Basically, whenever a process is being completed, I want to have an Overlay that's somewhat transparent with a certain tint, and in the foreground a loading gif would be displayed. The background items will be not clickable to prevent any other processes being loaded/run at once. The only part I really need help with is making the tinted background and making the items in the background not clickable. Ideally, I want this class to be used as a Util class to be used in other case where I would need to start a loading screen. So far, this is my code:

package com.cervinakuy.game;

import java.awt.Color;

import javax.swing.JFrame;
import javax.swing.JTextField;

public class Overlay extends JFrame {

    private static final long serialVersionUID = 1L;

    public Overlay() {

        setUndecorated(true);
        setBackground(new Color(1.0f,1.0f,1.0f,0.5f));
        setAlwaysOnTop(true);
        getRootPane().putClientProperty("apple.awt.draggableWindowBackground", false);

        setVisible(true);
        pack();

    }

}

Answer 1

You can do what you are doing except you would use a modal JDialog instead of a JFrame. A modal dialog prevents events from being passed to the parent JFrame until the dialog is closed.

Another approach is to use a Glass Pane . The glass pane can cover the frame. You can then intercept the Mouse/Key events to prevent further processing until the glass pane is removed.

Check out Disabled Glass Pane for an example of this approach.