在被动渲染模式下,可以使用 KeyListener 和 ActionListener 接口处理来自用户的事件。但是,当使用全屏模式时,需要采用不同的方法。
要在全屏模式下处理事件,同时确保高效渲染,可以实现以下步骤:
考虑以下 FullScreenTest 类,它提供了如何在全屏模式下处理事件的示例:
public class FullScreenTest extends JPanel { // Set up a JFrame for full screen exclusive mode private JFrame f = new JFrame("FullScreenTest"); // Initialize an exit action and add it to the JFrame's root pane private Action exit = new AbstractAction(EXIT) { @Override public void actionPerformed(ActionEvent e) { // Close the JFrame when the exit action is triggered f.dispatchEvent(new WindowEvent(f, WindowEvent.WINDOW_CLOSING)); } }; private JButton b = new JButton(exit); // Create a FullScreenTest instance and add it to the JFrame public FullScreenTest() { // Add a button to the JPanel and set it as the default button for the JFrame this.add(b); f.getRootPane().setDefaultButton(b); // Register a KeyStroke for the exit action (in this case, the 'Q' key) this.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_Q, 0), EXIT); // Associate the exit action with the EXIT key this.getActionMap().put(EXIT, exit); // Add a MouseAdapter to handle mouse movement and display tooltips this.addMouseMotionListener(new MouseAdapter() { @Override public void mouseMoved(MouseEvent e) { FullScreenTest.this.setToolTipText( "("+ e.getX() + "," + e.getY() + ")"); } }); } // Display the JFrame in full screen exclusive mode private void display() { GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment(); GraphicsDevice dev = env.getDefaultScreenDevice(); // Configure the JFrame for full screen mode f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setBackground(Color.darkGray); f.setResizable(false); f.setUndecorated(true); f.add(this); f.pack(); // Set the JFrame to be the full screen window dev.setFullScreenWindow(f); } // Create a main method and run the application in the EventQueue public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { new FullScreenTest().display(); } }); } }
在此示例:
通过使用这种方法,您可以在全屏模式下高效处理键盘和鼠标事件,同时保持最佳性能用于您的图形渲染。
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