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问JProgressBar文本溢出
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Stack Overflow用户

提问于 2013-08-21 07:00:35

回答 2查看 4.4K关注 0票数 2

我的程序用JProgressBar写文本。问题是文本比JProgressBar的宽度更宽。

我已经更改了JProgressBar的高度，以便能够将文本写在两行上，但我不想更改宽度。

如果JProgressBar太宽，如何更改JProgressBar的溢出以使文本返回下一行？

我希望这是足够清楚的:)

以下是我想要的：

谢谢

编辑

在@mKorbel回复之后，结果如下：

标签很好，但为什么是那些条子呢？

我的代码：

// Construct progress bar
JProgressBar progressBar = new JProgressBar(0, 100);
// Set progressBar color
progressBar.setForeground(new Color(0,176,80));

// Edit progress bar height
Dimension prefSize = progressBar.getPreferredSize();
prefSize.height = 50;
progressBar.setPreferredSize(prefSize);

// Set the layout
progressBar.setLayout(new BorderLayout(5, 5));

// Set progress bar value
progressBar.setValue(38);

// Construct the label
JLabel progressLabel = new JLabel("<html>I have already changed the JProgressBar's height to be able to write the text on two lines but I don't want to the change the width.</html>");
// Set alignment
progressLabel.setHorizontalAlignment(JLabel.CENTER);
progressLabel.setVerticalAlignment(JLabel.CENTER);

// Set the borders
progressLabel.setBorder(new EmptyBorder(15, 15, 15, 15));

// Change the font
font = progressLabel.getFont();
font = font.deriveFont(Font.BOLD, 12);
progressLabel.setFont(font);

// Add label to the progress bar
progressBar.add(progressLabel, BorderLayout.CENTER);

// Add progress bar to the frame
frame.add(progressBar);

java

swing

overflow

jprogressbar

回答 2

Stack Overflow用户

回答已采纳

发布于 2013-08-21 10:40:23

这个程序是用Java 6开发的，看来JLayer是不可用的。如果我错了，你能提供一些代码来说明如何做到这一点吗？

你能提供一些关于如何做到这一点的代码吗？- JLayer & JProgressBar by @aterai，关于更多的想法，请看他的博客，Java6你可以使用JXLayer。
或者使用GlassPane具有非常相似的逻辑

一些笔记

应该使用GBC而不是NullLayout。
添加图标或透明背景可以更好
(将LayoutManager添加到JLabel中)可以放置与JPanel相同的JComponents束

例如

import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JProgressBar;
import javax.swing.JRadioButton;
import javax.swing.UIManager;
//https://stackoverflow.com/questions/14560680/jprogressbar-low-values-will-not-be-displayed
public class ProgressSample {

    private JFrame frame = new JFrame("GlassPane instead of JLayer");
    private JLabel label;
    private GridBagConstraints gbc = new GridBagConstraints();
    private JProgressBar progressSeven;

    public ProgressSample() {
        frame.setLayout(new FlowLayout());
        frame.add(new JButton("test"));
        frame.add(new JCheckBox("test"));
        frame.add(new JRadioButton("test"));
        // Nothing is displayed if value is lover that 6
        JProgressBar progressSix = new JProgressBar(0, 100);
        progressSix.setValue(2);
        frame.add(progressSix);
        // but this works value is higher that 6
        progressSeven = new JProgressBar(0, 100);
        progressSeven.addComponentListener(new ComponentAdapter() {
            @Override
            public void componentMoved(ComponentEvent e) {
                label.setBounds(
                        (int) progressSeven.getBounds().getX(),
                        (int) progressSeven.getBounds().getY(),
                        label.getPreferredSize().width,
                        label.getPreferredSize().height);
            }
        });
        progressSeven.setValue(7);
        frame.add(progressSeven);
        label = new JLabel();
        label.setText("<html> Concurency Issues in Swing<br>"
                + " never to use Thread.sleep(int) <br>"
                + " durring EDT, simple to freeze GUI </html>");
        label.setPreferredSize(new Dimension(label.getPreferredSize().width, label.getPreferredSize().height));
        Container glassPane = (Container) frame.getRootPane().getGlassPane();
        glassPane.setVisible(true);
        glassPane.setLayout(null);
        glassPane.add(label, gbc);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Exception e) {
            e.printStackTrace();
        }
        ProgressSample dialogTest = new ProgressSample();
    }
}

编辑

我的第一个想法是使用html，但令人惊讶的是(对我来说)进度栏不支持它.@kleopatra

和

我想我的问题可能不够清楚。我不希望文本超过JProgressBar边界。另外，我不想手动插入行返回(不) )。我加了一张我想要的照片。@Maxbester

结果是采用JProgressBar作为Container，放置适当的LayoutManager，通过JLabel叠加JProgressBar。

增强，将EmptyBorder设置为JLabel，例如label.setBorder(new EmptyBorder(15, 15, 15, 15));

EDIT2 (图标是，也可以是semi_transparent，可以覆盖JProgressBar)

代码可能类似于

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JProgressBar;
import javax.swing.UIManager;
import javax.swing.border.EmptyBorder;

public class JProgressBarWithJLabel {

    private JFrame frame = new JFrame("JLabel in JProgressBar");
    private JLabel label;
    private JProgressBar progressSeven;

    public JProgressBarWithJLabel() {
        progressSeven = new JProgressBar(0, 100){
            @Override
            public Dimension getPreferredSize() {
                return new Dimension(300, 60);
            }
        };
        progressSeven.setValue(38);
        progressSeven.setLayout(new BorderLayout(5, 5));
        label = new JLabel();
        label.setHorizontalTextPosition(JLabel.CENTER);
        label.setVerticalTextPosition(JLabel.CENTER);
        label.setBorder(new EmptyBorder(15, 15, 15, 15));
        label.setText("<html>I have already changed the JProgressBar's height "
                + "to be able to write the text on two lines but I don't want "
                + "to the change the width.</html>");
        progressSeven.add(label, BorderLayout.CENTER);
        frame.add(progressSeven);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        try {
            for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(laf.getName())) {
                    UIManager.setLookAndFeel(laf.getClassName());
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                new JProgressBarWithJLabel();
            }
        });
    }
}

EDIT3：

WindowsClassicLookAndFeel的默认剥离(图标不是semi_transparent)

票数 4

Stack Overflow用户

发布于 2015-10-16 16:54:22

可得到的答案并没有让我满意。因此，为了满足自己的需要，我实现了以下替代解决方案。

import javax.swing.JProgressBar;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.geom.Rectangle2D;

public class MultilineProgressBar extends JProgressBar
{
    private static final String FONT_NAME = "Dialog";
    private static final int FONT_SIZE = 12;

    private static final int INTERLINE_COEFFICIENT = 2;
    private static final int NEWLINE_OFFSET = FONT_SIZE * INTERLINE_COEFFICIENT;
    private static final int CENTERING_DIVISOR = 2;


    @Override
    protected void paintComponent(final Graphics graphics)
    {
        super.paintComponent(graphics);

        final String componentString = getString();

        int i = componentString.indexOf('\n');
        if (i == -1)
            return;

        // Draw first line of the component's string
        String currentString = componentString.substring(0, i);
        Rectangle2D stringBounds = getFontMetrics(getFont()).getStringBounds(currentString, graphics);
        graphics.setFont(new Font(FONT_NAME, Font.BOLD, FONT_SIZE));
        graphics.setColor(Color.WHITE);
        graphics.drawString(currentString,
                            (int) (getWidth() - stringBounds.getWidth()) / CENTERING_DIVISOR,
                            (int) (getHeight() - stringBounds.getHeight()) / CENTERING_DIVISOR);

        ++i;
        if (i >= componentString.length())
            return;

        // Draw second line of the component's string
        currentString = componentString.substring(i);
        stringBounds = getFontMetrics(getFont()).getStringBounds(currentString, graphics);
        graphics.drawString(currentString,
                            (int) (getWidth() - stringBounds.getWidth()) / CENTERING_DIVISOR,
                            (int) ((getHeight() - stringBounds.getHeight()) / CENTERING_DIVISOR) + NEWLINE_OFFSET);
    }
}

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/18350786

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