JToolbar中的JTextField-在Linux和Windows中均无法正确显示 [英] JTextField in JToolbar - cannot display properly in both Linux and Windows

问题描述

请参阅下面的SSCCE:

Please see the SSCCE below:

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.EventQueue;

import javax.swing.Box;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JToolBar;
import javax.swing.UIManager;
import javax.swing.border.EtchedBorder;


@SuppressWarnings("serial")
public class GlueTest extends JComponent {

    private JFrame frame;
    private JToolBar toolbar;
    private JLabel label_1;
    private JTextField textField_1;
    private JLabel label_2;
    private JTextField textField_2;

    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Throwable e) {
            e.printStackTrace();
        }
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    GlueTest window = new GlueTest();
                    window.frame.setVisible(true);
                    window.frame.requestFocusInWindow();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    public GlueTest() {
        initialize();
    }

    private void initialize() {
        frame = new JFrame("Test");
        frame.setBounds(0,0,800,600);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        toolbar = new JToolBar();
        toolbar.setFloatable(false);
        toolbar.setBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null));
        toolbar.setMaximumSize(new Dimension(frame.getWidth(), frame.getHeight()));
        frame.getContentPane().add(toolbar, BorderLayout.NORTH);

        Component horizontalGlue = Box.createHorizontalGlue();
        toolbar.add(horizontalGlue);

        label_1 = new JLabel(" 1 ");
        toolbar.add(label_1);

        textField_1 = new JTextField();
        textField_1.setColumns(9);
        textField_1.setMaximumSize(textField_1.getPreferredSize());
        toolbar.add(textField_1);

        label_2 = new JLabel(" 2 ");
        toolbar.add(label_2);

        textField_2 = new JTextField();
        textField_2.setColumns(9);
        textField_2.setMaximumSize(textField_2.getPreferredSize());
        toolbar.add(textField_2);
    }
}

注意，我正在使用系统"外观.在Windows 7中，它显示完美.文本框的大小自动达到最大，左侧的水平胶水也尽可能增大，从而迫使它们向右对齐.

Notice I am using "system" look and feel. In Windows 7, it displays perfectly. The textfields size automatically to their maximum size, and the horizontal glue to their left grows as much as it can, forcing them to be right aligned.

但是，在Linux(如果重要的话，Ubuntu 12.04)中，它最终会有所不同.文本字段将滚动到框架之外！水平胶水本身太大.

However, in Linux (Ubuntu 12.04 if it matters), it ends up way different. The textfields scroll right off the frame! The horizontal glue sizes itself too large.

我尝试了几种其他方法来使其在两种情况下都能正常显示，但没有运气.实际上，要使它在Linux中正确显示的唯一方法是删除文本字段的所有样式(最大宽度，列等)，然后成功地将其滚动到框架之外，但是这样做是没有用的.宽度只有几个像素.

I've tried several other different ways to get it to display properly in both, with no luck. In fact, the only way I can get it to display properly in Linux is to remove all the stylings of the textfield (max width, columns, etc), and then it succeeds in not scrolling off the frame, but it is useless since it has only a few pixels of width.

作为旁注，我什至没有机会尝试使用Mac OS，但是我很好奇 的结果.

As a sidenote, I haven't even got a chance to try on a Mac OS, but I'd be curious how that turns out.

推荐答案

问题(不是*** nix用户)，您是否对此代码有相同的问题

question (not ***nix user), do you have the same issue with this code

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.Box;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JToolBar;
import javax.swing.border.EtchedBorder;

@SuppressWarnings("serial")
public class GlueTest extends JComponent {

    private JFrame frame;
    private JToolBar toolbar;
    private JLabel label_1;
    private JTextField textField_1;
    private JLabel label_2;
    private JTextField textField_2;

    public GlueTest() {
        toolbar = new JToolBar();
        toolbar.setFloatable(false);
        toolbar.setBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null));
        toolbar.setAlignmentY(TOP_ALIGNMENT);
        toolbar.add(Box.createHorizontalGlue());

        label_1 = new JLabel(" 1 ");        
        toolbar.add(label_1);
        toolbar.add(Box.createRigidArea(new Dimension(10,1)));

        textField_1 = new JTextField();
        textField_1.setColumns(9);
        textField_1.setMaximumSize(textField_1.getPreferredSize());
        toolbar.add(textField_1);
        toolbar.add(Box.createHorizontalStrut(10));

        label_2 = new JLabel(" 2 ");
        toolbar.add(label_2);
        toolbar.add(Box.createRigidArea(new Dimension(10,1)));

        textField_2 = new JTextField();
        textField_2.setColumns(9);
        textField_2.setMaximumSize(textField_2.getPreferredSize());
        toolbar.add(textField_2);
        toolbar.add(Box.createHorizontalStrut(10));

        frame = new JFrame("Test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(toolbar, BorderLayout.NORTH);
        frame.add(new JTextArea(10, 40));
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                GlueTest window = new GlueTest();
            }
        });
    }
}

将内置的BoxLayout切换为BorderLayout

switch the built_in BoxLayout to BorderLayout

import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JToolBar;
import javax.swing.border.EtchedBorder;

@SuppressWarnings("serial")
public class GlueTest extends JComponent {

    private JFrame frame;
    private JToolBar toolbar;
    private JLabel label_1;
    private JTextField textField_1;
    private JLabel label_2;
    private JTextField textField_2;

    public GlueTest() {
        toolbar = new JToolBar();
        toolbar.setFloatable(false);
        toolbar.setBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null));
        toolbar.setLayout(new BorderLayout(10, 10)); 
        JPanel panel = new JPanel();
        panel.setOpaque(false);
        label_1 = new JLabel("1");        
        panel.add(label_1);
        textField_1 = new JTextField();
        textField_1.setColumns(9);
        panel.add(textField_1);
        label_2 = new JLabel("2");
        panel.add(label_2);
        textField_2 = new JTextField();
        textField_2.setColumns(9);
        panel.add(textField_2);
        toolbar.add(panel, BorderLayout.EAST);
        frame = new JFrame("Test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(toolbar, BorderLayout.NORTH);
        frame.add(new JTextArea(10, 40));
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                GlueTest window = new GlueTest();
            }
        });
    }
}

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