FontSizeAnimation.java Source code

Introduction

Here is the source code for FontSizeAnimation.java

Source

import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;

public class FontSizeAnimation extends JPanel implements ActionListener {
    Timer timer;
    int x = 1;
    float alpha = 1;

    public FontSizeAnimation() {
        timer = new Timer(8, this);
        timer.setInitialDelay(190);
        timer.start();
    }

    public void paint(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;

        Font font = new Font("Dialog", Font.PLAIN, x);
        g2d.setFont(font);

        FontMetrics fm = g2d.getFontMetrics();
        String s = "Java";

        int w = (int) getSize().getWidth();
        int h = (int) getSize().getHeight();

        int stringWidth = fm.stringWidth(s);

        g2d.drawString(s, (w - stringWidth) / 2, h / 2);
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("FontSizeAnimation");
        frame.add(new FontSizeAnimation());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 300);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        x += 1;
        alpha -= 0.0001;
        repaint();
    }
}