java按钮点击处于当前焦点的时候，能否边框线不在文字边沿，而是在按钮边沿呢？

[cuixiping]

java按钮点击处于当前焦点的时候，能否边框线不在文字边沿，而是在按钮边沿呢？

就像windows的按钮那样，焦点时的边框线都是在按钮边沿的。

[boby]

只用重写MetalButtonUI就可以了, 写了个简单的，给你参考

import javax.swing.AbstractButton;
import javax.swing.UIManager;
import javax.swing.plaf.metal.MetalButtonUI;
import java.awt.Graphics;
import java.awt.Rectangle;

public class MyButtonUI extends MetalButtonUI{

int rectGapX;
int rectGapY;
int rectGapW;
int rectGapH;

public MyButtonUI() {
rectGapX = UIManager.getInt("ButtonUI.dashedRectGapX");
rectGapY = UIManager.getInt("ButtonUI.dashedRectGapY");
rectGapW = UIManager.getInt("ButtonUI.dashedRectGapWidth");
rectGapH = UIManager.getInt("ButtonUI.dashedRectGapHeight");
}

protected void paintFocus(Graphics g, AbstractButton b, Rectangle viewRect,
Rectangle textRect, Rectangle iconRect) {

textRect = new Rectangle(rectGapX+3, rectGapY+3, b.getWidth()-rectGapW-6,
b.getHeight()-rectGapH-6);
super.paintFocus(g, b, viewRect, textRect, iconRect);
}
}

使用如下

JButton button = new JButton("test Button");
MyButtonUI bui = new MyButtonUI();
button.setUI(bui);

[LexChen]

这个有非常简单的方法，JDK本身就提供了这种支持

JButton button = new JButton("测试");
Insets inset = new Insets(1,1,1,1); //这个数值就是那个边框线离四个边框的距离
button.setMargin(inset);

OK了