基本上,在您的鼠标侦听器中,您需要确定按下了哪个按钮(以及可选的,多少次)。
关键的代码是这个......
if (e.getButton() == MouseEvent.BUTTON1 && e.getClickCount() == 1) { ... }
我还包含了一些额外的代码,以确保弹出窗口不覆盖任务栏并显示在屏幕的可视区域内(这是我的一个 nit 选择;))
public class TestTrayIcon02 {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception ex) {
}
try {
final TrayIcon ti = new TrayIcon(ImageIO.read(getClass().getResource("/Smiley.png")), "Have a nice day");
final JPopupMenu popup = new JPopupMenu();
JMenuItem mi = new JMenuItem("Get me some");
mi.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
SystemTray.getSystemTray().remove(ti);
System.exit(0);
}
});
popup.add(mi);
ti.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
if (e.getButton() == MouseEvent.BUTTON1 && e.getClickCount() == 1) {
Rectangle bounds = getSafeScreenBounds(e.getPoint());
Point point = e.getPoint();
int x = point.x;
int y = point.y;
if (y < bounds.y) {
y = bounds.y;
} else if (y > bounds.y + bounds.height) {
y = bounds.y + bounds.height;
}
if (x < bounds.x) {
x = bounds.x;
} else if (x > bounds.x + bounds.width) {
x = bounds.x + bounds.width;
}
if (x + popup.getPreferredSize().width > bounds.x + bounds.width) {
x = (bounds.x + bounds.width) - popup.getPreferredSize().width;
}
if (y + popup.getPreferredSize().height > bounds.y + bounds.height) {
y = (bounds.y + bounds.height) - popup.getPreferredSize().height;
}
popup.setLocation(x, y);
popup.setVisible(true);
}
}
});
SystemTray.getSystemTray().add(ti);
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
}
public static Rectangle getSafeScreenBounds(Point pos) {
Rectangle bounds = getScreenBoundsAt(pos);
Insets insets = getScreenInsetsAt(pos);
bounds.x += insets.left;
bounds.y += insets.top;
bounds.width -= (insets.left + insets.right);
bounds.height -= (insets.top + insets.bottom);
return bounds;
}
public static Insets getScreenInsetsAt(Point pos) {
GraphicsDevice gd = getGraphicsDeviceAt(pos);
Insets insets = null;
if (gd != null) {
insets = Toolkit.getDefaultToolkit().getScreenInsets(gd.getDefaultConfiguration());
}
return insets;
}
public static Rectangle getScreenBoundsAt(Point pos) {
GraphicsDevice gd = getGraphicsDeviceAt(pos);
Rectangle bounds = null;
if (gd != null) {
bounds = gd.getDefaultConfiguration().getBounds();
}
return bounds;
}
public static GraphicsDevice getGraphicsDeviceAt(Point pos) {
GraphicsDevice device = null;
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice lstGDs[] = ge.getScreenDevices();
ArrayList<GraphicsDevice> lstDevices = new ArrayList<GraphicsDevice>(lstGDs.length);
for (GraphicsDevice gd : lstGDs) {
GraphicsConfiguration gc = gd.getDefaultConfiguration();
Rectangle screenBounds = gc.getBounds();
if (screenBounds.contains(pos)) {
lstDevices.add(gd);
}
}
if (lstDevices.size() > 0) {
device = lstDevices.get(0);
} else {
device = ge.getDefaultScreenDevice();
}
return device;
}
}