gpt4 book ai didi

Java AttributedString,粗体和上标

转载 作者:行者123 更新时间:2023-11-30 03:20:54 25 4
gpt4 key购买 nike

我正在尝试渲染一个 java.text.AttributedString ,它既是粗体又是上标。虽然它可以使某些范围变为粗体或上标,但渲染似乎无法处理同时为粗体和上标的范围。

以下 SSCCE 显示使用带有 HTML 文本的 JLabel 进行渲染效果很好。有没有办法在没有 JLabel 的情况下获得这种行为?

顺便说一句,我查看了创建的 AttributedString 属性,它们对我来说看起来没问题,所以这绝对是一个渲染问题。

package funky.chart;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.font.TextAttribute;
import java.text.AttributedString;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.UIManager;

public class AttributedStringTest
{
public static void main(String[] args) {
// prevent using the default UI manager who renders in bold by default for the HTML label
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception ex) {
System.err.println("Could not set look and feel: " + ex);
}

JFrame frame = new JFrame("AttributedString superscript with font");

frame.getContentPane().add(new JPanel() {
@Override
public void paint(Graphics gfx) {
super.paint(gfx);

Font bold = gfx.getFont().deriveFont(Font.BOLD);

// superscript and bold only works fine
AttributedString test1 = new AttributedString("test superscript and bold");
test1.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUPER, 5, 16);
test1.addAttribute(TextAttribute.FONT, bold, 21, 25);

// both superscript and bold is only rendered as bold
AttributedString test2 = new AttributedString("test superscript and bold");
test2.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUPER, 5, 25);
test2.addAttribute(TextAttribute.FONT, bold, 5, 25);

gfx.drawString(test1.getIterator(), 5, 20);
gfx.drawString(test2.getIterator(), 5, 40);
}

@Override
public Dimension getPreferredSize() {
return new Dimension(200, 70);
}
});

// HTML label works fine
frame.getContentPane().add(
new JLabel("<html>test <b>bold</b>, <sup>super</sup> and <b><sup>both</sup></b>"),
BorderLayout.SOUTH);

frame.pack();
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.setVisible(true);
}
}

最佳答案

关于完整示例的一些注释:

image

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.font.TextAttribute;
import java.text.AttributedString;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

/** @see https://stackoverflow.com/a/31360762/230513 */
public class AttributedStringTest {

public static void main(String[] args) {
EventQueue.invokeLater(new AttributedStringTest()::display);
}

private void display() {
JFrame frame = new JFrame("AttributedString superscript with font");
frame.getContentPane().add(new JPanel() {
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);

// superscript and bold only works fine
AttributedString test1 = new AttributedString("test superscript and bold");
test1.addAttribute(TextAttribute.SIZE, 28, 0, 25);
test1.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUPER, 5, 16);
test1.addAttribute(TextAttribute.WEIGHT, TextAttribute.WEIGHT_BOLD, 21, 25);

// both superscript and bold is only rendered as bold
AttributedString test2 = new AttributedString("test superscript and bold");
test2.addAttribute(TextAttribute.SIZE, 28, 0, 25);
test2.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUPER, 5, 25);
test2.addAttribute(TextAttribute.WEIGHT, TextAttribute.WEIGHT_BOLD, 5, 25);

g.drawString(test1.getIterator(), 5, 35);
g.drawString(test2.getIterator(), 5, 70);
}

@Override
public Dimension getPreferredSize() {
return new Dimension(300, 80);
}
});

// HTML label works fine
frame.getContentPane().add(new JLabel(
"<html>test <b>bold</b>, <sup>super</sup> and <b><sup>both</sup></b>", JLabel .CENTER),
BorderLayout.SOUTH);

frame.pack();
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.setVisible(true);
}
}

关于Java AttributedString,粗体和上标,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31359512/

25 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com