使Java Swing模式对话框像Mac OSX对话框一样运行 [英] Make Java Swing Modal Dialog Behave Like Mac OSX Dialogs

问题描述

我正在编写一个小应用程序，它需要一个ProgressBar显示在框架的TitleBar中心，这在Mac OSX应用程序中经常出现。我有两个问题：

I am writing a small app that requires a ProgressBar to appear centred under the frame's TitleBar as is often seen in Mac OSX apps. I have two problems:

1 。我已经管理了定位，但我必须硬编码父Frame的TitleBar高度。是否有'软'方式来获得TitleBar的高度？

1. I have managed the positioning but I had to hard code the parent Frame's TitleBar height. Is there a 'soft' way to get the TitleBar's height?

在Dialog的构造函数中：

In the Dialog's constructor:

 Dimension dimensionParentFrame = parent.getSize();
 Dimension dimensionDialog = getSize();
 int x = parent.getX() + ((dimensionParentFrame.width - dimensionDialog.width)/2);
 setLocation(x, parent.getY() + 22);              // TODO HARD CODE WARNING TITLE HEIGHT

2 。即使Dialog是模态的，我仍然可以点击父框架并移动它。如何让对话框粘贴到父框架？也就是说，当移动父框架时，对话框随之移动，如同附加一样。

2. Even though the Dialog is modal, I can still click on the parent Frame and move it. How can I make the Dialog 'stick' to the parent Frame? That is, when the parent Frame is moved the Dialog moves with it as if attached.

任何帮助/指针都将非常受欢迎。

Any help/pointers would be much appreciated.

以下是代码：

    import javax.swing.JFrame;
    import javax.swing.JButton;
    import java.awt.BorderLayout;
    import java.awt.EventQueue;
    import java.awt.event.ActionListener;
    import java.awt.event.ActionEvent;


    public class ModalDialogDemoFrame extends JFrame
    {
      ModalDialogDemoFrame modalDialogDemo;
      public ModalDialogDemoFrame() 
      {
        modalDialogDemo = this;
        setBounds(100, 100, 400, 400);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JButton buttonDialog = new JButton("Open Dialog");
        buttonDialog.addActionListener(new ActionListener() 
        {
          public void actionPerformed(ActionEvent arg0) 
          {
            // Create a Modal Dialog with this Frame as Parent.
            ModalDialog modalDialog = new ModalDialog(modalDialogDemo, true);
            modalDialog.setVisible(true);
          }
        });
        getContentPane().add(buttonDialog, BorderLayout.CENTER);
      }

      /**
       * @param args
       */
      public static void main(String[] args)
      {
        EventQueue.invokeLater(new Runnable()
        {
          public void run()
          {
            try
            {
              ModalDialogDemoFrame window = new ModalDialogDemoFrame();
              window.setVisible(true);
            }
            catch (Exception e)
            {
              e.printStackTrace();
            }
          }
        });
      }

    }

    import java.awt.Dimension;

    import javax.swing.JDialog;
    import javax.swing.JFrame;
    import javax.swing.JButton;
    import java.awt.BorderLayout;
    import java.awt.event.ActionListener;
    import java.awt.event.ActionEvent;


    public class ModalDialog extends JDialog
    {
      public ModalDialog(JFrame parent, boolean modal) 
      {
        super(parent, modal);
        Dimension dimensionParentFrame = parent.getSize();
        setSize(new Dimension((parent == null) ? 300 : dimensionParentFrame.width / 2, 75));
        Dimension dimensionDialog = getSize();
        int x = parent.getX() + ((dimensionParentFrame.width - dimensionDialog.width)/2);
        setLocation(x, parent.getY() + parent.getInsets().top);
        setUndecorated(true);
        setModal(modal);
        setModalityType(ModalityType.APPLICATION_MODAL);
        setDefaultCloseOperation(DISPOSE_ON_CLOSE);

        JButton buttonClose = new JButton("Close");
        buttonClose.addActionListener(new ActionListener() 
        {
          public void actionPerformed(ActionEvent e) 
          {
            dispose();
          }
        });
        getContentPane().add(buttonClose, BorderLayout.CENTER);
      }

    }

推荐答案

int titleBarHeight = frame.getInsets().top;

即使Dialog是模态的，我仍然可以点击父母框架并移动它。

Even though the Dialog is modal, I can still click on the parent Frame and move it.

然后你做错了，因为这不应该发生。

Then you are doing something wrong because this should NOT happen.

发布证明问题的 SSCCE 。

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