TrayMenu can't show unicode characters

[GTOL]

Code to reproduce the problem.

FXTrayIcon icon = new FXTrayIcon(stage, App.class.getResource("image/icon.png"));
icon.show();
icon.addExitItem("退出");

FYI
Unicode text is not displayed correctly in awt Label

[dustinkredmond]

Great find! I think we can handle this, let me look at it a bit further, but in this day and age, there's not a lot that doesn't support Unicode. I would think that even the AWT calls that we make support this.

[leck995]

Waiting...

[dustinkredmond]

Looks like the AWT MenuItem and CheckMenuItem classes need to be using a Font that supports Unicode. I support the idea of implementing a font that supports unicode out of the box, but not sure which to choose just yet. We may want to make this something that is configurable by library users as well.

I would ideally like a way to get the system font and just reuse that as the default, defaulting to another option if that font does not support unicode. I'm going to explore these options, but am open to suggestions from anyone else that wants unicode support.

[Sun45]

这个问题需要设置默认字符编码为GBK
比如在Gradle设置运行配置
application { applicationDefaultJvmArgs = listOf("-Dfile.encoding=GBK") }
或者设置VM options
-Dfile.encoding=GBK
如果使用jpackage打包运行，还需要配置
--java-options -Dfile.encoding=GBK

[EasyG0ing1]

@dustinkredmond @GTOL

It’s a rational and well-intentioned proposal, Desmond, but unfortunately, it won’t solve the problem. The core issue is that Java does not actually render tray menu text at all. In java.awt.SystemTray, menu text rendering is delegated to the operating system via JNI. Once the text crosses that boundary, Java no longer has control - not with font selection - not with anything text-related. So there really isn’t a viable path for FXTrayIcon to inject or enforce a Unicode-capable font for AWT tray menus.

Apparently, this has been a known limitation in AWT for a long time now, and if it could have been solved simply by selecting a better font, then the problem would have been addressed years ago.

Given that constraint, I’m currently exploring an alternative approach: using AWT strictly as the bridge to the system tray icon, then rendering the menu itself using JavaFX. In this model, AWT handles tray integration, while JavaFX takes over for menu rendering and interaction.

This would fully resolve Unicode rendering issues and also provide a more consistent JavaFX-native experience overall. And as a bonus, it could be implemented as an optional feature—enabled via the builder or configuration—so existing behavior and compatibility remain unchanged.

I'll either update you here or I'll post a PR if it all works out.

[dustinkredmond]

@EasyG0ing1

Great idea for an implementation that works around the issue. I look forward to what you come up with.

Thanks!

[GTOL]

@EasyG0ing1 Thanks for the explanation.