Go语言视频零基础入门到精通

五菱

支持HTML格式设置的组件有:
1. JButton
2. JLabel
3. JMenultem
4. JRadioButtonMenuitem
5. JCheckBoxMenultem
6. JTabbedPane
7. JTabbedPane
8. JToolTip
9. JToggleButton
10. JCheckBox
11. JRadioButton



代码:

import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingConstants;
/* HtmlDemo.java needs no other files. */
public class HtmlDemo extends JPanel implements ActionListener {
  JLabel theLabel;
  JTextArea htmlTextArea;
  public HtmlDemo() {
    setLayout(new BoxLayout(this, BoxLayout.LINE_AXIS));
    String initialText = "\n" + "Color and font test:\n" + "< ul>\n"
        + "< li>< font color=red>red< /font>\n" + "< li>< font color=blue>blue< /font>\n"
        + "< li>< font color=green>green< /font>\n" + "< li>< font size=-2>small< /font>\n"
        + "< li>< font size=+2>large< /font>\n" + "< li>< i>italic< /i>\n" + "< li>< b>bold< /b>\n"
        + "< /ul>\n";
    htmlTextArea = new JTextArea(10, 20);
    htmlTextArea.setText(initialText);
    JScrollPane scrollPane = new JScrollPane(htmlTextArea);
    JButton changeTheLabel = new JButton("Change the label");
    changeTheLabel.setMnemonic(KeyEvent.VK_C);
    changeTheLabel.setAlignmentX(Component.CENTER_ALIGNMENT);
    changeTheLabel.addActionListener(this);
    theLabel = new JLabel(initialText) {
      public Dimension getPreferredSize() {
        return new Dimension(200, 200);
      }
      public Dimension getMinimumSize() {
        return new Dimension(200, 200);
      }
      public Dimension getMaximumSize() {
        return new Dimension(200, 200);
      }
    };
    theLabel.setVerticalAlignment(SwingConstants.CENTER);
    theLabel.setHorizontalAlignment(SwingConstants.CENTER);
    JPanel leftPanel = new JPanel();
    leftPanel.setLayout(new BoxLayout(leftPanel, BoxLayout.PAGE_AXIS));
    leftPanel.setBorder(BorderFactory.createCompoundBorder(BorderFactory
        .createTitledBorder("Edit the HTML, then click the button"), BorderFactory
        .createEmptyBorder(10, 10, 10, 10)));
    leftPanel.add(scrollPane);
    leftPanel.add(Box.createRigidArea(new Dimension(0, 10)));
    leftPanel.add(changeTheLabel);
    JPanel rightPanel = new JPanel();
    rightPanel.setLayout(new BoxLayout(rightPanel, BoxLayout.PAGE_AXIS));
    rightPanel.setBorder(BorderFactory.createCompoundBorder(BorderFactory
        .createTitledBorder("A label with HTML"), BorderFactory.createEmptyBorder(10, 10, 10, 10)));
    rightPanel.add(theLabel);
    setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
    add(leftPanel);
    add(Box.createRigidArea(new Dimension(10, 0)));
    add(rightPanel);
  }
  // React to the user pushing the Change button.
  public void actionPerformed(ActionEvent e) {
    theLabel.setText(htmlTextArea.getText());
  }
  /**
   * Create the GUI and show it. For thread safety, this method should be
   * invoked from the event-dispatching thread.
   */
  private static void createAndShowGUI() {
    // Create and set up the window.
    JFrame frame = new JFrame("HtmlDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    // Create and set up the content pane.
    JComponent newContentPane = new HtmlDemo();
    newContentPane.setOpaque(true); // content panes must be opaque
    frame.setContentPane(newContentPane);
    // Display the window.
    frame.pack();
    frame.setVisible(true);
  }
  public static void main(String[] args) {
    // Schedule a job for the event-dispatching thread:
    // creating and showing this application's GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        createAndShowGUI();
      }
    });
  }
}