当窗口调整大小时，如何在JLabel中调整图像大小？ 如何保持适当的规模？

Question

Say I've got an image in a JLabel. Here's how I'm currently adding it:

p=resizeImage(p,lbl.getWidth(),lbl.getHeight());
lbl.setIcon(p);

I'd like to resize this as the label is resized.

• How can I accomplish this?
• how can I resize while maintaining proportion?

I could write a small function to get the image width to height ratio, get the label width and height, find the smaller of the two(proportionally) and calculate the new height and width manually. That would not be an issue, but I wonder if there's a cleaner way.

Answer 1

您可以收听标签的大小调整事件，或者，我更喜欢直接绘制图像（用JComponent替换JLabel）。