如何在Java Swing中创建圆角标题边框 [英] How to create a rounded title border in Java Swing

问题描述

我知道要创建标题边框，您可以执行以下操作：

I do understand that to create a title border, you do something like:

BorderFactory.createTitledBorder("  Your Title  ");

然而，这会创建一个矩形边框，而我需要一个带有弯角的矩形。

However this creates a rectangle border whereas I need a rectangle with curved corners.

根据我的理解，您可以通过以下方式创建自己的自定义边框：

Now from what I understand you can create your own custom border by:

class CustomBorder implements Border
{
  ...
}

问题是我不知道如何编写覆盖该方法的代码：

The problem is that I'm not sure how to write the code that overrides the method:

public void paintBorder(Component component, Graphics g, int x, int y, int width, int height)

或更好，有没有办法在不实现自己的Border类的情况下完成它？如果没有，你会如何编写自定义标题边框？我可以画一个带圆角的矩形，但你怎么做才能有标签的空间呢？

Or better yet, is there a way to do it without implementing your own Border class? And if not, how would you write that custom Title Border? I'm ok with drawing a rectangle with rounded corners, but how do you do it so that there's space for the label too?

推荐答案

可以创建带有圆边的标题边框，而无需实现自己的Border类。只需将圆形边框传递给TitledBorder的构造函数即可。请尝试以下操作：

It is possible to create a title border with rounded edges without implementing your own Border class. Simply pass a rounded border to TitledBorder's constructor. Try the following:

LineBorder roundedLineBorder = new LineBorder(Color.black, 5, true);
TitledBorder roundedTitledBorder = new TitledBorder(roundedLineBorder, "Title");

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