如何在JButton图标上方和下方设置文本? [英] How to set text above and below a JButton icon?

问题描述

我想在上方和下方设置JButton图标的文本.目前，为了实现这一点，我重写了布局管理器并使用了三个JLabel实例(即2个用于文本，1个用于图标).但这似乎是一个肮脏的解决方案.

I want to set text above and below a JButton's icon. At the moment, in order to achieve this, I override the layout manager and use three JLabel instances (i.e. 2 for text and 1 for the icon). But this seems like a dirty solution.

是否有更直接的方法?

注意-
我不是在寻找多行解决方案，而是在寻找 multi-label 解决方案.尽管这篇文章将其称为 multi-line 解决方案，它实际上似乎是指 multi-label 解决方案.

Note -
I'm not looking for a multi-line solution, I'm looking for a multi-label solution. Although this article refers to it as a multi-line solution, it actually seems to refer to a multi-label solution.

import java.awt.Component;
import java.awt.FlowLayout;
import javax.swing.BoxLayout;
import javax.swing.Icon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

public final class JButtonDemo {

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable(){
            @Override
            public void run() {
                createAndShowGUI();
            }
        });
    }


    private static void createAndShowGUI(){
        final JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLayout(new FlowLayout());
        frame.add(new JMultiLabelButton());
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }

    private static final class JMultiLabelButton extends JButton
    {
        private static final long serialVersionUID = 7650993517602360268L;

        public JMultiLabelButton()
        {
            super();
            setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
            add(new JCenterLabel("Top Label"));
            add(new JCenterLabel(UIManager.getIcon("OptionPane.informationIcon"))); 
            add(new JCenterLabel("Bottom Label"));
        }
    }

    private static final class JCenterLabel extends JLabel
    {
        private static final long serialVersionUID = 5502066664726732298L;

        public JCenterLabel(final String s)
        {
            super(s);
            setAlignmentX(Component.CENTER_ALIGNMENT);
        }

        public JCenterLabel(final Icon i)
        {
            super(i);
            setAlignmentX(Component.CENTER_ALIGNMENT);
        }
    }

}

推荐答案

无法在JButton的顶部/底部之间拆分文本.这将涉及定制绘画.

There is not way to split the text between the top/bottom of a JButton. This would involve custom painting.

由于我不确定您的确切要求，因此我将提出一些随机的想法:

Since I'm not sure of your exact requirement I'll just through out a few random ideas:

1. 您可以将JButton与文本&图标. API中有一些方法可以让您控制文本相对于图标的位置.然后，您需要为另一行文本添加第二个标签.基本上与您当前的解决方案相同，但是只需要两个标签.

1. You can use a JButton with text & icon. There are methods in the API that allow you to controal where text is positioned relative to the icon. Then you would need a second label for the other line of text. Basically the same as you current solution but you only need two labels.

您可以使用文本图标和复合图标类，以从3个单独的图标中创建1个图标.然后，您只需将图标添加到按钮即可.

You could use the Text Icon and Compound Icon classes to create 1 Icon out of 3 separate Icons. Then you can just add the icon to a button.

使用JTextPane.它支持insertIcon()方法.因此，您可以添加一行文本，添加图标，然后添加另一行文本.如果不想让文本左对齐，则可以使用文本窗格的段落属性在空间中水平对齐文本.您还可以使用背景色使其看起来像标签.

Use a JTextPane. Its supports an insertIcon() method. So you could add a line of text, add the icon and then add the other line of text. You can play with the paragraph attributes of the text pane to align the text horizontally within the space if you don't want the text left justified. You can also play with the background color to make it look like a label.

使用CompoundIcon的示例:

Example using the CompoundIcon:

import java.awt.*;
import javax.swing.*;

public final class JButtonDemo {

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable(){
            @Override
            public void run() {
                createAndShowGUI();
            }
        });
    }


    private static void createAndShowGUI()
    {
        JButton button = new JButton();

        CompoundIcon icon = new CompoundIcon(CompoundIcon.Axis.Y_AXIS,
            new TextIcon(button, "Top Label"),
            UIManager.getIcon("OptionPane.informationIcon"),
            new TextIcon(button, "Bottom Label"));

        button.setIcon( icon );
        button.setFocusPainted( false );

        final JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLayout(new FlowLayout());
        frame.add( button );
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

这篇关于如何在JButton图标上方和下方设置文本?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！