FontDemopublic class FontDemo extends JComponent | Finds and displays available fonts
TODO: should be a JTable with the text name in one column and the demo
in a JLabel in the other. |
| Fields Summary |
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| protected String[] | fontNamesThe list of Fonts | | protected Font[] | fontsThe fonts themselves | | static final int | YINCRHow much space between each name |
| Constructors Summary |
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public FontDemo()Construct a FontDemo -- Sets title and gets
array of fonts on the system
Toolkit toolkit = Toolkit.getDefaultToolkit();
// For JDK 1.1: returns about 10 names (Serif, SansSerif, etc.)
// fontNames = toolkit.getFontList();
// For JDK 1.2: a much longer list; most of the names that come
// with your OS (e.g., Arial, Lucida, Lucida Bright, Lucida Sans...)
fontNames = GraphicsEnvironment.getLocalGraphicsEnvironment().
getAvailableFontFamilyNames();
fonts = new Font[fontNames.length];
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| Methods Summary |
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| public java.awt.Dimension | getPreferredSize()
return new Dimension(500, fontNames.length * YINCR);
| | public static void | main(java.lang.String[] args)Simple main program to start it running
JFrame f = new JFrame("Font Demo");
f.getContentPane().add(new JScrollPane(new FontDemo()));
f.setSize(600, 700);
f.setVisible(true);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
| | public void | paint(java.awt.Graphics g)Draws the font names in its font.
Called by AWT when painting is needed
Does lazy evaluation of Font creation, caching the results
(without this, scrolling performance suffers even on a P3-750).
for (int i=0; i<fontNames.length; i+=1) {
if (fonts[i] == null) {
fonts[i] = new Font(fontNames[i], Font.BOLD, 14);
}
g.setFont(fonts[i]);
int x = 20;
int y = 20 + (YINCR * i);
g.drawString(fontNames[i], x, y);
}
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