更改 JRadioButtonMenuItem 的选定点颜色

2022-01-21 00:00:00 radio-button menuitem java swing

我正在开发我的个人 Java 聊天客户端，它的一个功能是设置用户状态(可用、不可见、忙碌).为了使其用户友好，我将这些状态放入带有 JRadioButtonMenuItem 的 JMenu 中.

I'm working on my personal Java chat client whose one feature is setting user's status (Available, Invisible, Busy). To make it user-friendly, I put those statuses into a JMenu with JRadioButtonMenuItem.

问题是我希望每个状态 RadioButton 都有自己的单选点颜色(或点图标).例如:

The problem is I want each status RadioButton to have its own radio-dot color (or dot-icon). For example:

[绿点] 可用
[红点] 忙碌
[灰点] 不可见.

我想用三个不同的自定义 RadioButtonMenuItem 扩展 JRadioButtonMenuItem，但不明白 JRadioButtonMenuItem 是如何绘制的.

I thought of extending the JRadioButtonMenuItem with three different custom RadioButtonMenuItem, but couldn't understand how JRadioButtonMenuItem is painted.

谁能帮我解决这个问题?

Could anyone help me to solve this problem?

编辑 1
感谢您建议将 Icon 与 setIcon() 和 setSelectedIcon() 方法一起使用.
但是，由于我的问题是关于更改单选点，您能否帮我隐藏 RadioButton 中的单选点?

Edit 1
Thanks for your suggestions to use Icon together with setIcon() and setSelectedIcon() methods.
However since my question is about changing the radio-dot, could you also help me to hide the radio-dot from a RadioButton?

编辑 2
这是我的应用程序的当前屏幕截图.

正如您所看到的那样， RadioButtonMenuItem 之前的点在某种程度上是荒谬的废话.这就是为什么我想摆脱点，或者将其更改为我的自定义图标:)

Edit 2
Here's the current screenshot of my app.

As you can see the dot before that RadioButtonMenuItem is somehow ridiculously nonsense. That's why I want to get rid of the dot, or change it to my custom icon :)

推荐答案

单选按钮的圆点由 UI 委托为每个 Look &感觉.您可以提供自己的 BasicRadioButtonUI，但付出的努力并非微不足道.作为替代方案，实现 Icon 接口，如 here in ColorIcon.
The radio button's dot is rendered by the UI delegate for each Look & Feel. You can supply your own BasicRadioButtonUI, but the effort is not trivial. As an alternative, implement the Icon interface, as shown here in ColorIcon.

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