本文介绍了重写JButton paintComponent（）不工作的Java的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想绘制我自己的JButton版本，所以我重写了 paintComponent（）方法，并绘制了一个渐变roundRect。这是有效的，但在此之后，我想在其上绘制Button的String，并且在编译时，我没有收到任何错误消息。但是在运行时，我只能看到roundRect，渐变，就像我想要的那样（我也可以点击它），但是字符串是不可见的...
I wanted to paint my own version of JButton, so I have overridden the paintComponent() method, and drew a gradient roundRect. This works, but after that, I want to draw the String of the Button over it, and at compile-time, I got no error messages. But at runtime, I only see the roundRect, gradient, just as I intended it to be (I can click on it too), but the String is invisible...
这里是我的代码：
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
public class JIconButton extends JButton implements MouseListener
{
private boolean mouseInside;
public JIconButton(String file, String text)
{
super(text, new ImageIcon(file));
setBorder(new LineBorder(Color.LIGHT_GRAY, 0, true));
setContentAreaFilled(false);
setFocusPainted(false);
addMouseListener(this);
setVisible(true);
}
public void mouseClicked(MouseEvent e)
{
}
public void mouseEntered(MouseEvent e)
{
}
public void mouseExited(MouseEvent e)
{
}
public void mousePressed(MouseEvent e)
{
}
public void mouseReleased(MouseEvent e)
{
}
@Override
protected void paintComponent(Graphics g)
{
Graphics2D g2 = (Graphics2D)g.create();
g2.setPaint(Color.BLACK);
g2.drawString(getText(), 0, 0);
g2.setPaint(new GradientPaint(
new Point(0, 0),
Color.WHITE,
new Point(0, getHeight()),
Color.PINK.darker()));
g2.fillRoundRect(0, 0, getWidth(), getHeight(), 30, 30);
g2.dispose();
//super.paintComponent(g);
}
}
推荐答案
根据我的评论，它为我工作....
例如：
As per my comment, "it worked for me...."
For example:
@Override
protected void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D) g.create();
g2.setPaint(new GradientPaint(new Point(0, 0), Color.WHITE, new Point(0,
getHeight()), Color.PINK.darker()));
g2.fillRoundRect(0, 0, getWidth(), getHeight(), 30, 30);
g2.setPaint(Color.BLACK);
g2.drawString(getText(), 30, 12);
g2.dispose();
// super.paintComponent(g);
}
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