在 textarea 中允许下标和上标文本

Question

我想在 textarea 中允许上标和下标文本。经过一番搜索，我偶然发现了 javafx.scene.text.FontPosition https://docs.oracle.com/cd/E17802_01/javafx/javafx/1.1/docs/api/javafx.scene.text/javafx.scene.text.FontPosition.html 用于将字体描述为上标、下标或正则。但我无法弄清楚如何在打字时将当前字体流从常规更改为下标/上标，反之亦然。

Answer 1

您可以将“WebView”节点用于富文本字段。示例代码如下。希望有用。

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.ScrollPane;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.Stage;

public class WebviewSample extends Application {
   @Override
   public void start(final Stage stage) {
   stage.setWidth(400);
   stage.setHeight(500);
   Scene scene = new Scene(new Group());


   final WebView browser = new WebView();
   final WebEngine webEngine = browser.getEngine();

   ScrollPane scrollPane = new ScrollPane();
   scrollPane.setContent(browser);

   String htmlText = "<b> This is bold text </b>"
                    + "<br/>" 
                    + "<h1> This is h1 text </h1>"
                    + "<br/>"
                    + "<h2 style=\"background-color:red\">Background-color set by using red</h2>";

webEngine.loadContent(htmlText);

scene.setRoot(scrollPane);

stage.setScene(scene);
stage.show();
}

    public static void main(String[] args) {
      launch(args);
    }
}

输出如下：