问题描述
我正在编写一个小型应用程序，它需要 ProgressBar 显示在框架的 TitleBar 下方，这在 Mac OSX 应用程序中很常见.我有两个问题:
1.我已经管理了定位，但我不得不硬编码父 Frame 的 TitleBar 高度.是否有一种软"方法来获取 TitleBar 的高度?
在Dialog的构造函数中:
维度 dimensionParentFrame = parent.getSize();维度 dimensionDialog = getSize();int x = parent.getX() + ((dimensionParentFrame.width - dimensionDialog.width)/2);setLocation(x, parent.getY() + 22);//TODO 硬代码警告标题高度2.即使对话框是模态的，我仍然可以单击父框架并移动它.如何使对话框粘"到父框架?也就是说，当父 Frame 移动时，Dialog 会随之移动，就好像附加了一样.
任何帮助/指针将不胜感激.
代码如下:
<代码>导入 javax.swing.JFrame；导入 javax.swing.JButton；导入 java.awt.BorderLayout；导入 java.awt.EventQueue；导入 java.awt.event.ActionListener；导入 java.awt.event.ActionEvent；公共类 ModalDialogDemoFrame 扩展了 JFrame{ModalDialogDemoFrame modalDialogDemo;公共 ModalDialogDemoFrame(){modalDialogDemo = 这个；setBounds(100, 100, 400, 400);设置默认关闭操作(JFrame.EXIT_ON_CLOSE)；JButton buttonDialog = new JButton("打开对话框");buttonDialog.addActionListener(new ActionListener(){公共无效actionPerformed(ActionEvent arg0){//创建一个以此框架为父的模态对话框.ModalDialog modalDialog = new ModalDialog(modalDialogDemo, true);modalDialog.setVisible(true);}});getContentPane().add(buttonDialog, BorderLayout.CENTER);}/*** @param 参数*/公共静态无效主要(字符串 [] 参数){EventQueue.invokeLater(new Runnable(){公共无效运行(){尝试{ModalDialogDemoFrame window = new ModalDialogDemoFrame();window.setVisible(true);}捕获(异常 e){e.printStackTrace();}}});}}导入 java.awt.Dimension；导入 javax.swing.JDialog；导入 javax.swing.JFrame；导入 javax.swing.JButton；导入 java.awt.BorderLayout；导入 java.awt.event.ActionListener；导入 java.awt.event.ActionEvent；公共类 ModalDialog 扩展了 JDialog{公共模态对话框(JFrame 父级，布尔模态){超级(父，模态)；维度 dimensionParentFrame = parent.getSize();setSize(new Dimension((parent == null) ? 300 : dimensionParentFrame.width/2, 75));维度 dimensionDialog = getSize();int x = parent.getX() + ((dimensionParentFrame.width - dimensionDialog.width)/2);setLocation(x, parent.getY() + parent.getInsets().top);设置未装饰(真)；设置模态(模态)；setModalityType(ModalityType.APPLICATION_MODAL);设置默认关闭操作(DISPOSE_ON_CLOSE)；JButton buttonClose = new JButton("关闭");buttonClose.addActionListener(new ActionListener(){公共无效actionPerformed(ActionEvent e){处置()；}});getContentPane().add(buttonClose, BorderLayout.CENTER);}}int titleBarHeight = frame.getInsets().top;<块引用>
即使对话框是模态的，我仍然可以单击父框架并移动它.
那么你做错了，因为这不应该发生.
发布您的 SSCCE 来证明问题.
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. 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?
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. 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.
Any help/pointers would be much appreciated.
Here is the code:
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);
}
}
int titleBarHeight = frame.getInsets().top;
Even though the Dialog is modal, I can still click on the parent Frame and move it.
Then you are doing something wrong because this should NOT happen.
Post your SSCCE that demonstrates the problem.
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