textpanel.java

来自「servletjsp一些应用程序」· Java 代码 · 共 44 行

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/** JPanel that places a panel with text drawn at various angles
 *  in the top part of the window and a JComboBox containing
 *  font choices in the bottom part.
 *  <P>
 *  Taken from Core Servlets and JavaServer Pages 2nd Edition
 *  from Prentice Hall and Sun Microsystems Press,
 *  http://www.coreservlets.com/.
 *  &copy; 2003 Marty Hall; may be freely used or adapted.
 */

public class TextPanel extends JPanel
                       implements ActionListener {
  private JComboBox fontBox;
  private DrawingPanel drawingPanel;
  
  public TextPanel() {
    GraphicsEnvironment env =
      GraphicsEnvironment.getLocalGraphicsEnvironment();
    String[] fontNames = env.getAvailableFontFamilyNames();
    fontBox = new JComboBox(fontNames);
    setLayout(new BorderLayout());
    JPanel fontPanel = new JPanel();
    fontPanel.add(new JLabel("Font:"));
    fontPanel.add(fontBox);
    JButton drawButton = new JButton("Draw");
    drawButton.addActionListener(this);
    fontPanel.add(drawButton);
    add(fontPanel, BorderLayout.SOUTH);
    drawingPanel = new DrawingPanel();
    fontBox.setSelectedItem("Serif");
    drawingPanel.setFontName("Serif");
    add(drawingPanel, BorderLayout.CENTER);
  }

  public void actionPerformed(ActionEvent e) {
    drawingPanel.setFontName((String)fontBox.getSelectedItem());
    drawingPanel.repaint();
  }
}