public class MetricsJPanel extends JPanel
1: // Fig. 12.15: MetricsJPanel.java
2: // FontMetrics and Graphics methods useful for obtaining font metrics.
3: import java.awt.Font;
4: import java.awt.FontMetrics;
5: import java.awt.Graphics;
6: import javax.swing.JPanel;
7:
8: public class MetricsJPanel extends JPanel
9: {
10: // display font metrics
11: public void paintComponent( Graphics g )
12: {
13: super.paintComponent( g ); // call superclass's paintComponent
14:
15: g.setFont( new Font( "SansSerif", Font.BOLD, 12 ) );
16: FontMetrics metrics = g.getFontMetrics();
17: g.drawString( "Current font: " + g.getFont(), 10, 40 );
18: g.drawString( "Ascent: " + metrics.getAscent(), 10, 55 );
19: g.drawString( "Descent: " + metrics.getDescent(), 10, 70 );
20: g.drawString( "Height: " + metrics.getHeight(), 10, 85 );
21: g.drawString( "Leading: " + metrics.getLeading(), 10, 100 );
22:
23: Font font = new Font( "Serif", Font.ITALIC, 14 );
24: metrics = g.getFontMetrics( font );
25: g.setFont( font );
26: g.drawString( "Current font: " + font, 10, 130 );
27: g.drawString( "Ascent: " + metrics.getAscent(), 10, 145 );
28: g.drawString( "Descent: " + metrics.getDescent(), 10, 160 );
29: g.drawString( "Height: " + metrics.getHeight(), 10, 175 );
30: g.drawString( "Leading: " + metrics.getLeading(), 10, 190 );
31: } // end method paintComponent
32: } // end class MetricsJPanel
33:
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35: * (C) Copyright 1992-2005 by Deitel & Associates, Inc. and *
36: * Pearson Education, Inc. All Rights Reserved. *
37: * *
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40: * development, research, and testing of the theories and programs *
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