FWD » Core Development » User Interface

import javax.swing.*;

import java.awt.font.*;

import java.awt.event.*;

import java.awt.*;

public class FontSizeExample

{

   public static void main(String[] args)

   {

      SwingUtilities.invokeLater(new Runnable()

      {

         public void run()

         {

            final int ht = 300;

            final int wd = 900;

            JFrame frame = new JFrame("Font Sizing");

            frame.setSize(wd, ht);

            frame.setLocation(150, 150);

            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

            frame.setContentPane(new JComponent()

            {

               public void paint(Graphics g)

               {

                  Graphics2D g2 = (Graphics2D) g;

                  g2.fillRect(10, 10, 96, 96);

                  Font   font = new Font(Font.SANS_SERIF, 0, 96);

                  String text = "WITM";

                  g2.setFont(font);

                  FontMetrics fm = g2.getFontMetrics();

                  LineMetrics lm = fm.getLineMetrics(text, g2);

                  double y = 10 + lm.getAscent();

                  g2.drawString(text, 130, (int) y);

                  int ht = fm.getHeight();

                  double lht = lm.getHeight();

                  g2.setFont(new Font(Font.SANS_SERIF, 0, 16));

                  g2.drawString(String.format("textHeight = %d px (line metrics ht = %g px)", ht, lht), 130 + 30 + 265, 53);

               }

            });

            frame.setVisible(true);

         }

      });

   }

}