/** * @version 1.20 27 Jun 1998 * @author Cay Horstmann */ import java.util.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; class FontCellRenderer implements ListCellRenderer { public Component getListCellRendererComponent (final JList list, final Object value, final int index, final boolean isSelected, final boolean cellHasFocus) { return new JPanel() { public void paintComponent(Graphics g) { super.paintComponent(g); Font font = (Font)value; String text = font.getFamily(); FontMetrics fm = g.getFontMetrics(font); g.setColor(isSelected ? list.getSelectionBackground() : list.getBackground()); g.fillRect(0, 0, getWidth(), getHeight()); g.setColor(isSelected ? list.getSelectionForeground() : list.getForeground()); g.setFont(font); g.drawString(text, 0, fm.getAscent()); } public Dimension getPreferredSize() { Font font = (Font)value; String text = font.getFamily(); Graphics g = getGraphics(); FontMetrics fm = g.getFontMetrics(font); return new Dimension(fm.stringWidth(text), fm.getHeight()); } }; } } class ListRenderingFrame extends JFrame implements ListSelectionListener { public ListRenderingFrame() { setTitle("ListRenderingTest"); setSize(400, 300); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } } ); Vector fonts = new Vector(); fonts.add(new Font("Serif", Font.PLAIN, 12)); fonts.add(new Font("SansSerif", Font.PLAIN, 12)); fonts.add(new Font("Monospaced", Font.PLAIN, 12)); fonts.add(new Font("Dialog", Font.PLAIN, 12)); fonts.add(new Font("DialogInput", Font.PLAIN, 12)); JList fontList = new JList(fonts); fontList.setSelectionMode (ListSelectionModel.SINGLE_SELECTION); fontList.setCellRenderer(new FontCellRenderer()); JScrollPane scrollPane = new JScrollPane(fontList); JPanel p = new JPanel(); p.add(scrollPane); fontList.addListSelectionListener(this); getContentPane().add(p, "South"); panel = new ListRenderingPanel(); getContentPane().add(panel, "Center"); } public void valueChanged(ListSelectionEvent evt) { JList source = (JList)evt.getSource(); Font font = (Font)source.getSelectedValue(); panel.setFont(font); } private ListRenderingPanel panel; } class ListRenderingPanel extends JPanel { public ListRenderingPanel() { setFont(new Font("Serif", Font.PLAIN, 12)); } public void setFont(Font f) { currentFont = f; repaint(); } public void paintComponent(Graphics g) { super.paintComponent(g); g.setFont(currentFont); g.drawString ("The quick brown fox jumps over the lazy dog", 0, 50); } private Font currentFont; } public class ListRenderingTest { public static void main(String[] args) { JFrame frame = new ListRenderingFrame(); frame.show(); } }