在Java中为OS X的暗模式创建菜单栏图标

Question

在Java中为OS X的暗模式创建菜单栏图标

7

我无法找到有关如何在Java中设置OS X（引入于OS X 10.10 Yosemite）的深色模式menubar图标的任何信息。我看过这篇文章http://mail.openjdk.java.net/pipermail/macosx-port-dev/2014-October/006740.html，但没有得到任何答案。我知道在Objective-C中已经讨论了这个问题How to detect dark mode in Yosemite to change the status bar menu icon，但不确定是否可以在Java中以类似的方式实现。

有办法实现这个吗？

- tobihagemann

1个回答

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- Sebastian S · Accepted Answer

我曾经遇到过同样的问题，通过调用defaults read命令并分析退出代码来解决它:

/**
 * @return true if <code>defaults read -g AppleInterfaceStyle</code> has an exit status of <code>0</code> (i.e. _not_ returning "key not found").
 */
private boolean isMacMenuBarDarkMode() {
    try {
        // check for exit status only. Once there are more modes than "dark" and "default", we might need to analyze string contents..
        final Process proc = Runtime.getRuntime().exec(new String[] {"defaults", "read", "-g", "AppleInterfaceStyle"});
        proc.waitFor(100, TimeUnit.MILLISECONDS);
        return proc.exitValue() == 0;
    } catch (IOException | InterruptedException | IllegalThreadStateException ex) {
        // IllegalThreadStateException thrown by proc.exitValue(), if process didn't terminate
        LOG.warn("Could not determine, whether 'dark mode' is being used. Falling back to default (light) mode.");
        return false;
    }
}

现在您可以加载不同的图片并在java.awt.TrayIcon中使用它们：

// java.awt.* controls are well suited for displaying menu bar icons on OS X
final Image image;
if (isMacMenuBarDarkMode()) {
    image = Toolkit.getDefaultToolkit().getImage(getClass().getResource("/tray_icon_darkmode.png"));
} else {
    image = Toolkit.getDefaultToolkit().getImage(getClass().getResource("/tray_icon_default.png"));
}