Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;

import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextPane;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyleContext;
import javax.swing.text.StyledDocument;

public class Main {
    public static void main(String[] args) throws Exception {
        int SIZE = 14;
        String FONT = "Dialog";

        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JTextPane tp = new JTextPane();
        tp.setFont(new Font(FONT, Font.PLAIN, SIZE));
        tp.setPreferredSize(new Dimension(400, 300));
        StyledDocument doc = tp.getStyledDocument();
        Style defaultStyle = StyleContext.getDefaultStyleContext().getStyle(StyleContext.DEFAULT_STYLE);
        Style boldStyle = doc.addStyle("bold", defaultStyle);
        StyleConstants.setBold(boldStyle, true);
        String boldText = "this is bold test";
        String plainText = "this is plain.";

        doc.insertString(doc.getLength(), boldText, boldStyle);
        doc.insertString(doc.getLength(), plainText, defaultStyle);

        JPanel panel = new JPanel();
        panel.add(tp);

        JComboBox<String> zoomCombo = new JComboBox<String>(
                new String[] { "0.75", "1.00", "1.50", "1.75", "2.00" });
        zoomCombo.addActionListener(e -> {
            String s = (String) zoomCombo.getSelectedItem();
            double scale = new Double(s).doubleValue();
            int size = (int) (SIZE * scale);
            tp.setFont(new Font(FONT, Font.PLAIN, size));
        });
        zoomCombo.setSelectedItem("1.00");
        JPanel optionsPanel = new JPanel();
        optionsPanel.add(zoomCombo);
        panel.setBackground(Color.WHITE);
        frame.add(panel, BorderLayout.CENTER);
        frame.add(optionsPanel, BorderLayout.NORTH);
        frame.pack();
        frame.setVisible(true);
    }
}