ubuntu - 为 JavaFX 应用程序设置的图标在 Windows 中可见，但在 Ubuntu 中不可见

Question

这有点奇怪，或者我的代码有问题。

我正在设置 JavaFX 应用程序图标，它在 Windows 系统上非常明显，但在 Ubuntu 上却看不到。

在 Windows 上:

在 Ubuntu 上:

关于这背后原因的任何想法。

代码示例:

@Override
public void start(Stage stage) throws Exception {

    try {
        setUserAgentStylesheet(STYLESHEET_MODENA);
        FXMLLoader loader = new FXMLLoader();
        Parent root = (Parent) loader.load(getClass().getResourceAsStream("ui/ParentWindow.fxml"));
        final ParentWindowController controller = (ParentWindowController) loader.getController();

        stage.addEventHandler(WindowEvent.WINDOW_SHOWN, controller::handleWindowShownEvent);
        stage.addEventHandler(WindowEvent.WINDOW_SHOWING, controller::handleWindowShowingEvent);
        stage.addEventHandler(WindowEvent.WINDOW_CLOSE_REQUEST, controller::handleWindowClosingRequestedEvent);

        Scene scene = new Scene(root);

        scene.getStylesheets().setAll(
                getClass().getResource("ui/css/ParentWindow.css").toExternalForm()
        );

        stage.setScene(scene);
        stage.initStyle(StageStyle.UNIFIED);
        stage.setResizable(false);
        stage.toFront();
        stage.setTitle("Simple JavaFX Tool");
        stage.getIcons().add(new Image(getClass().getResourceAsStream("resources/images/icon.jpg")));
        stage.show();
    } catch (IOException iOException) {
        iOException.printStackTrace();
    }
}

Answer 1

对于寻找解决方案的人来说，这是 JDK 问题跟踪器中的一个未解决问题。

Gtk: Implement global system menu bar support

根据 JavaFX 开发人员对 similar issue 的评论:

Glass/FX currently doesn't support the global menu bar on GTK (RT-28202). As such, Glass doesn't set any application-wide hints to specify the application name or application icon. The desktop environment has to guess them itself (likely, using a window's title and icon). Hence, it is correct that the "app window" (#1 above) should always display the correct title, while the other 3 places may or may not display the correct title depending on timings. This is unlikely to change until RT-28202 is implemented.

在 JavaFX 问题与 JDK 问题合并之前，RT-28202 是上述链接问题的问题 ID。

这个问题的票数非常少，因此没有引起太大兴趣。如果您已注册为贡献者，请随时为该问题投票。