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FX-Text-Area for formatted text and other special effects.

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package org.fxmisc.richtext.demo;

import java.time.Duration;

import javafx.application.Application;
import javafx.geometry.Point2D;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.stage.Popup;
import javafx.stage.Stage;

import org.fxmisc.richtext.event.MouseOverTextEvent;
import org.fxmisc.richtext.StyleClassedTextArea;

/**
 * Name: TooltipDemo
 * Description: .
 * 
 * Comment: ...
 * 
 * Copyright: Copyright (c) 2016-2019
 * Company: >StA-Soft<
 * @author StA
 * @version 1.0
 */

public class TooltipDemo extends Application
{

  /**
   * Main-Methode.
   * @param args Kommandozeilenparameter
   */

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

  @Override
  public void start(Stage stage)
  {
    StyleClassedTextArea area = new StyleClassedTextArea();
    area.setWrapText(true);
    area.appendText("Pause the mouse over the text for 1 second.");

    Popup popup = new Popup();
    Label popupMsg = new Label();
    popupMsg.setStyle(
      "-fx-background-color: black;" +
        "-fx-text-fill: white;" +
        "-fx-padding: 5;");
    popup.getContent().add(popupMsg);

    area.setMouseOverTextDelay(Duration.ofSeconds(1));
    area.addEventHandler(MouseOverTextEvent.MOUSE_OVER_TEXT_BEGIN, e ->
    {
      int chIdx = e.getCharacterIndex();
      Point2D pos = e.getScreenPosition();
      popupMsg.setText("Character '" + area.getText(chIdx, chIdx + 1) + "' at " + pos);
      popup.show(area, pos.getX(), pos.getY() + 10);
    });
    area.addEventHandler(MouseOverTextEvent.MOUSE_OVER_TEXT_END, e ->
    {
      popup.hide();
    });

    Scene scene = new Scene(area, 600, 400);
    stage.setScene(scene);
    stage.setTitle("Tooltip Demo");
    stage.show();
  }

}