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java - 无法删除 JTextPane 中 html 内容的额外行距

转载 作者:行者123 更新时间:2023-11-28 19:07:27 26 4
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如果我将内容类型设置为 text/html,我无法将 Java JTextPane 中的行挤在一起。当内容类型为 text/plain(默认值)时,我希望它们尽可能靠近。

line-height, top-margin, ... CSS 属性似乎没有帮助:(。

这是我的示例程序的输出,表明当 HTML 编辑器处理渲染时,这些行确实占用了更多空间:

alt text http://lh6.ggpht.com/_Wx4sMDdKKdU/S8cYWIPKhzI/AAAAAAAAAig/4QzFwygmEBs/simpleTextPane.PNG

生成框架的代码是:

import java.awt.BorderLayout;
import java.awt.Dimension;

import javax.swing.JFrame;
import javax.swing.JTextPane;
import javax.swing.text.StyleConstants;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.StyleSheet;

public class DemoSimplestGui extends JFrame {
private static final long serialVersionUID = 1L;

private static final int WINDOW_WIDTH = 800;
private static final int WINDOW_HEIGHT = 130;

private static final String PLAIN_TEXT = "" +
"This is some <b>plain text</b>\n" +
"separated by backslash-n characters\n" +
"There's no empty space between lines\n" +
"which is exactly what we need.";

private static final String DIV_BASED_HTML_TEXT = "" +
"<div>This is some <b>html text</b></div>" +
"<div>that usses DIV tags.</div>" +
"<div>There's too much blank space</div>" +
"<div>and that sucks for my application</div>";

private static final String PRE_BASED_HTML_TEXT = "" +
"<pre>This is some <b>html text</b></pre>" +
"<pre>that usses PRE tags</pre>" +
"<pre>There's too much blank space grr</pre>" +
"<pre>and that sucks for my application</pre>";

public static void main(String[] args) {
final DemoSimplestGui frame = new DemoSimplestGui();
frame.setPreferredSize(new Dimension(WINDOW_WIDTH, WINDOW_HEIGHT));
frame.setSize(frame.getPreferredSize());
frame.setMinimumSize(new Dimension(WINDOW_WIDTH / 2, WINDOW_HEIGHT / 2));
frame.init();
frame.setVisible(true);
}

public void init() {
setLayout(new BorderLayout(10, 10));
add(createPlainTextPane(), BorderLayout.WEST);
add(createDivBasedHtmlTextPane(), BorderLayout.CENTER);
add(createPreBasedHtmlTextPane(), BorderLayout.EAST);
}

private JTextPane createPlainTextPane() {
final JTextPane textPane = new JTextPane();
textPane.setContentType("text/plain");
StyleConstants.setFontFamily(textPane.getInputAttributes(), "Courier New");
textPane.setText(PLAIN_TEXT);
return textPane;
}

private JTextPane createDivBasedHtmlTextPane() {
final JTextPane textPane = new JTextPane();
textPane.setContentType("text/html");
textPane.setEditorKit(configureHtmlEditorKit(textPane));
textPane.setText(DIV_BASED_HTML_TEXT);
return textPane;
}

private JTextPane createPreBasedHtmlTextPane() {
final JTextPane textPane = new JTextPane();
textPane.setContentType("text/html");
textPane.setEditorKit(configureHtmlEditorKit(textPane));
textPane.setText(PRE_BASED_HTML_TEXT);
return textPane;
}

private HTMLEditorKit configureHtmlEditorKit(JTextPane textPane) {
final HTMLEditorKit kit = (HTMLEditorKit) textPane.getEditorKit();
final StyleSheet css = new StyleSheet();
css.addRule("body { font-family: monospaced; margin-top: 0; margin-down: 0; line-height: 0; }");
css.addRule("div, pre { margin-top: 0; margin-down: 0; line-height: 0; }");
kit.setStyleSheet(css);
return kit;
}

}

我真的很感激一些提示 :D

最佳答案

这可能取决于平台:

DemoSimplestGui

关于java - 无法删除 JTextPane 中 html 内容的额外行距,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/2645834/

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