使用等宽字体时，Substance UI的HighlightPainter问题 [英] HighlightPainter issue with Substance UI when using Monospaced font

问题描述

我正在使用Highlighter.HighlightPainter界面突出显示文本区域的行.我使用了来自以下网站的源代码: Line Painter .它工作得很好，但是当我使用org.jvnet.substance.skin.SubstanceBusinessBlackSteelLookAndFeel来装饰GUI时，出现了一个问题.每当我将文本区域的字体更改为Monospaced时，出于某些原因就不会调用Highlighter.HighlightPainter的paint()方法.这是示例代码:

I am using Highlighter.HighlightPainter interface for highlighting the lines of a text area. I used the source code from this website: Line Painter. It works just great, but when I used org.jvnet.substance.skin.SubstanceBusinessBlackSteelLookAndFeel for decorating the GUI, an issue comes up. Whenever I change the font of the text area to Monospaced, the paint() method of Highlighter.HighlightPainter isn't invoked for some reason. Here is a sample code:

import java.awt.Font;
import java.awt.Graphics;
import java.awt.Shape;
import javax.swing.BorderFactory;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.text.BadLocationException;
import javax.swing.text.Highlighter;
import javax.swing.text.JTextComponent;

public class TestFrame extends JFrame implements Highlighter.HighlightPainter
{
    private static final long serialVersionUID = 1L;

    static
    {
        try
        {
            JFrame.setDefaultLookAndFeelDecorated(true);
            JDialog.setDefaultLookAndFeelDecorated(true);
            UIManager.setLookAndFeel(new org.jvnet.substance.skin.SubstanceBusinessBlackSteelLookAndFeel()); 
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
    }

    public TestFrame() throws BadLocationException
    {
        super("The title");
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        JTextArea txt = new JTextArea(10, 30);
        txt.getHighlighter().addHighlight(0, 0, this);
        txt.setFont(new Font("Monospaced", Font.PLAIN, 12));
        JPanel container = (JPanel) getContentPane();
        container.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
        container.add(txt);
        pack();
        setLocationRelativeTo(null);
    }

    public static void main(String[] args)
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            public void run()
            {
                try
                {
                    new TestFrame().setVisible(true);
                }
                catch(BadLocationException e)
                {
                    e.printStackTrace();
                }
            }
        });
    }

    @Override
    public void paint(Graphics g, int p0, int p1, Shape bounds, JTextComponent c)
    {
        System.out.println("paint() is invoked!");
    }
}

如果我对此行发表评论:

If I comment this line:

txt.setFont(new Font("Monospaced", Font.PLAIN, 12));

paint()将被调用.反正有解决此问题的方法吗?

paint() will be invoked. Is there anyway to fix this issue?

推荐答案

1)@ Eng.Fouad在此提到了n_times次(@ camickr，@ StanislavL)，用于样式化和高强度的测试，它使用支持该功能的JTextComponent

1) @Eng.Fouad this was n_times mentioned (@camickr, @StanislavL) here for styled and highligted test use JTextComponent that supporting that

2)@ Eng.Fouad您是JTextArea的正确输出

2) @Eng.Fouad you are right output from JTextArea

来自代码

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

public class TextPaneHighlighting {

    private static final long serialVersionUID = 1L;
    private Highlighter.HighlightPainter cyanPainter;
    private Highlighter.HighlightPainter redPainter;

    public TextPaneHighlighting() {
        JFrame frame = new JFrame();
        JTextPane textPane = new JTextPane();
        textPane.setText("one\ntwo\nthree\nfour\nfive\nsix\nseven\neight\n");
        //textPane.setFont(new Font("Monospaced", Font.PLAIN, 12)); // uncommnent
        JScrollPane scrollPane = new JScrollPane(textPane);
        frame.add(scrollPane, BorderLayout.CENTER);//  Highlight some text
        cyanPainter = new DefaultHighlighter.DefaultHighlightPainter(Color.cyan);
        redPainter = new DefaultHighlighter.DefaultHighlightPainter(Color.red);
        try {
            textPane.getHighlighter().addHighlight(0, 3, DefaultHighlighter.DefaultPainter);
            textPane.getHighlighter().addHighlight(8, 14, cyanPainter);
            textPane.getHighlighter().addHighlight(19, 24, redPainter);
        } catch (BadLocationException ble) {
        }
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setPreferredSize(new Dimension(300, 200));
        frame.setLocationRelativeTo(null);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                JFrame.setDefaultLookAndFeelDecorated(true);
                JDialog.setDefaultLookAndFeelDecorated(true);
                try {
                    UIManager.setLookAndFeel(new org.pushingpixels.substance.api.skin.SubstanceBusinessBlackSteelLookAndFeel());
                } catch (UnsupportedLookAndFeelException ex) {
                }
                TextPaneHighlighting tph = new TextPaneHighlighting();
            }
        });
    }
}

3)就像@rashgod正确提到的那样，永远不要在没有invokeLater的情况下在Substance中设置任何内容，永远不要对外观敏感的东西进行设置，也许这​​时字体不重要，也许不重要

3) as @ trashgod correctly mentioned never to set whatever in Substance without invokeLater, never, whatever Look and Feel sensitive, right maybe in this moment Font isn't important, maybe not

4)简单的JTextArea在Font和Look and Feel方面存在一些问题，对于Renderer(很抱歉，在唤醒后我很懒地读取API)和Substance可能有自己的Highlighter概念，对于Renderer概念，您必须使用SubstanceRenderer而不是XxxRenderer ，然后按除

4) simple JTextArea have got some issue with Font and Look and Feel, maybe there are own Highlighter concept as for Renderer (sorry I lazy read API after wake_up) and Substance, for Renderer concept you must to use SubstanceRenderer instead of XxxRenderer, then all formatting wokrs as you excepted

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

public class Fonts implements Runnable {

    private String[] fnt;
    private JFrame frm;
    private JScrollPane jsp;
    private JTextPane jta;
    private int width = 450;
    private int height = 300;
    private GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    private StyledDocument doc;
    private MutableAttributeSet mas;
    private int cp = 0;
    private Highlighter.HighlightPainter cyanPainter = new DefaultHighlighter.DefaultHighlightPainter(Color.cyan);
    private Highlighter.HighlightPainter redPainter = new DefaultHighlighter.DefaultHighlightPainter(Color.red);
    private Highlighter.HighlightPainter whitePainter = new DefaultHighlighter.DefaultHighlightPainter(Color.white);
    private int _count = 0;
    private int _lenght = 0;

    public Fonts() {
        jta = new JTextPane();
        doc = jta.getStyledDocument();
        jsp = new JScrollPane(jta);
        jsp.setPreferredSize(new Dimension(height, width));
        frm = new JFrame("awesome");
        frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frm.setLayout(new BorderLayout());
        frm.add(jsp, BorderLayout.CENTER);
        frm.setLocation(100, 100);
        frm.pack();
        frm.setVisible(true);
        jta.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
        fnt = ge.getAvailableFontFamilyNames();
        mas = jta.getInputAttributes();
        new Thread(this).start();
    }

    @Override
    public void run() {
        for (int i = 0; i < fnt.length; i++) {
            StyleConstants.setBold(mas, false);
            StyleConstants.setItalic(mas, false);
            StyleConstants.setFontFamily(mas, fnt[i]);
            StyleConstants.setFontSize(mas, 16);
            dis(fnt[i]);
            try {
                Thread.sleep(75);
            } catch (Exception e) {
                e.printStackTrace();
            }
            StyleConstants.setBold(mas, true);
            dis(fnt[i] + " Bold");
            try {
                Thread.sleep(75);
            } catch (Exception e) {
                e.printStackTrace();
            }
            StyleConstants.setItalic(mas, true);
            dis(fnt[i] + " Bold & Italic");
            try {
                Thread.sleep(75);
            } catch (Exception e) {
                e.printStackTrace();
            }
            StyleConstants.setBold(mas, false);
            dis(fnt[i] + " Italic");
            try {
                Thread.sleep(75);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        jta.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
    }

    public void dis(String s) {
        _count++;
        _lenght = jta.getText().length();
        try {
            doc.insertString(cp, s, mas);
            doc.insertString(cp, "\n", mas);
        } catch (Exception bla_bla_bla_bla) {
            bla_bla_bla_bla.printStackTrace();
        }
        if (_count % 2 == 0) {
            try {
                jta.getHighlighter().addHighlight(1, _lenght - 1, cyanPainter);
            } catch (BadLocationException bla_bla_bla_bla) {
            }
        } else if (_count % 3 == 0) {
            try {
                jta.getHighlighter().addHighlight(1, _lenght - 1, redPainter);
            } catch (BadLocationException bla_bla_bla_bla) {
            }
        } else {
            try {
                jta.getHighlighter().addHighlight(1, _lenght - 1, whitePainter);
            } catch (BadLocationException bla_bla_bla_bla) {
            }
        }
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                JFrame.setDefaultLookAndFeelDecorated(true);
                JDialog.setDefaultLookAndFeelDecorated(true);
                try {
                    UIManager.setLookAndFeel(new org.pushingpixels.substance.api.skin.SubstanceBusinessBlackSteelLookAndFeel());
                } catch (UnsupportedLookAndFeelException ex) {
                }
                Fonts fs = new Fonts();
            }
        });
    }
}

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