metrics.java Source code

Introduction

Here is the source code for metrics.java

Source

// This example is from the book _Java AWT Reference_ by John Zukowski.
// Written by John Zukowski.  Copyright (c) 1997 O'Reilly & Associates.
// You may study, use, modify, and distribute this example for any purpose.
// This example is provided WITHOUT WARRANTY either expressed or
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;

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

public class metrics extends JPanel {
    metrics() {
        setFont(new Font("TimesRoman", Font.BOLD | Font.ITALIC, 48));
        setSize(225, 175);
    }

    public void paint(Graphics g) {
        g.translate(100, 100);
        FontMetrics fm = null;
        int ascent, descent, leading, width1, width2, height;
        String string1 = "dsdas";
        String string2 = "asdf";
        int xPos = 25, yPos = 50;
        fm = g.getFontMetrics();
        ascent = fm.getAscent();
        descent = fm.getDescent();
        leading = fm.getLeading();
        height = fm.getHeight();
        width1 = fm.stringWidth(string1);
        width2 = fm.stringWidth(string2);
        g.drawString(string1, xPos, yPos);
        g.drawLine(xPos, yPos - ascent - leading, xPos + width1, yPos - ascent - leading);
        g.drawLine(xPos, yPos - ascent, xPos + width1, yPos - ascent);
        g.drawLine(xPos, yPos, xPos + width1, yPos);
        g.drawLine(xPos, yPos + descent, xPos + width1, yPos + descent);
        g.drawString(string2, xPos, yPos + height);
        g.drawLine(xPos, yPos - ascent - leading + height, xPos + width2, yPos - ascent - leading + height);
        g.drawLine(xPos, yPos - ascent + height, xPos + width2, yPos - ascent + height);
        g.drawLine(xPos, yPos + height, xPos + width2, yPos + height);
        g.drawLine(xPos, yPos + descent + height, xPos + width2, yPos + descent + height);

    }

    public static void main(String[] args) {
        JFrame f = new JFrame();
        f.add(new metrics());
        f.setSize(300, 300);
        f.setVisible(true);
    }
}