Swing:在JPanel中绘制图形会改变其尺寸吗? [英] Swing: Would drawing graphic in a JPanel changes its dimension?

问题描述

我有一个JPanel类，其方法paintComponent()被覆盖以绘制自定义图表.

I got a JPanel class and its method paintComponent() is overridden to draw a custom chart.

如果我绘制比面板大的图形，面板的尺寸会被拉伸吗?

Would the panel's dimension be stretched if I drew a graphic bigger than the panel?

如果答案是否定的，我该怎么做?

If answer is no, how could I make it so?

推荐答案

如果我绘制比面板大的图形，面板的尺寸会被拉伸吗?

Would the panel's dimension be stretched if I drew a graphic bigger than the panel?

不，它不会伸展.

..我怎么能做到呢?

..how could I make it so?

最简单的方法:与其将绘制图形的逻辑放入paint方法中，不如将逻辑绘制为绘制正确大小的图像，然后在JLabel中显示该图像.

Easiest way: Instead of putting the logic of drawing the graph into the paint method, put that logic into drawing an image of the correct size, then display the image in a JLabel.

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