John Jiang

非常好的文章，謝謝樓主分享！非常好的文章，謝謝樓主分享！  回復  更多評論
  

兄弟 這種情況我個人覺得用 JRootPane 會更好一些.

不過我的代碼沒考慮鍵盤的事件 呵呵 很早以前自己搞的玩意了

package beansoft.swing;

import javax.swing.*;

import java.awt.BorderLayout;
import java.awt.Cursor;
import java.awt.FlowLayout;
import java.awt.event.*;

/**
* We have to provide our own glass pane so that it can paint a loading
* dialog and then the user can see the progress but can't operation
* the GUI, it's a transparent pane so the below contents is visible.
*
* Also please refer to articles by Sun - How to Use Root Panes:
* {@link http://java.sun.com/docs/books/tutorial/uiswing/components/rootpane.html}
* @author Jacky Liu
* @version 1.0 2006-08
*/
public class LoadingGlassPane extends JPanel {
private static final long serialVersionUID = 1L;
/**
* A label displays status text and loading icon.
*/
private JLabel statusLabel = new JLabel("Reading data, please wait...");

public LoadingGlassPane() {
try {
statusLabel.setIcon(new ImageIcon(getClass().getResource(
"loading.gif")));
} catch (RuntimeException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}

statusLabel.setHorizontalAlignment(JLabel.CENTER);

// Must add a mouse listener, otherwise the event will not be
// captured
this.addMouseListener(new java.awt.event.MouseAdapter() {
public void mousePressed(MouseEvent e) {
}
});

this.setLayout(new BorderLayout());

this.add(statusLabel);
// Transparent
setOpaque(false);
}

public JLabel getStatusLabel() {
return statusLabel;
}

/**
* Set the text to be displayed on the glass pane.
*
* @param text
*/
public void setStatusText(final String text) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
statusLabel.setText(text);
}
});
}

/**
* Install this to the jframe as glass pane.
* @param frame
*/
public void installAsGlassPane(JFrame frame) {
frame.setGlassPane(this);
}

/**
* A small demo code of how to use this glasspane.
* @param args
*/
public static void main(String[] args) {
JFrame frame = new JFrame("Test GlassPane");
final LoadingGlassPane glassPane = new LoadingGlassPane();
glassPane.installAsGlassPane(frame);

JButton button = new JButton("Test Query");

button.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
// Call in new thread to allow the UI to update
Thread th = new Thread() {
public void run() {
glassPane.setVisible(true);
glassPane.setCursor(new Cursor(Cursor.WAIT_CURSOR));
// TODO Long time operation here
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
glassPane.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
glassPane.setVisible(false);
}
};

th.start();
}

});

frame.getContentPane().setLayout(new FlowLayout());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(button);

frame.setSize(200, 200);
frame.setVisible(true);

}

}  回復  更多評論
  

@BeanSoft
我瀏覽了一下你的代碼，你使用的方法就是我在文章末尾提到的"將LoadingPanel設置為GlassPane..."這種方法。
一般地，若要使用GlassPane時，最好優先考慮使用LayeredPane。
但我必須要說，使用StackLayout最靈活性，也最簡單。  回復  更多評論
  

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正好有一朋友問到這個問題，就借大作獻佛了。呵呵。多謝。~~  回復  更多評論